diff --git a/Godeps/Godeps.json b/Godeps/Godeps.json
index 6fa7d07a2..360bfe27f 100644
--- a/Godeps/Godeps.json
+++ b/Godeps/Godeps.json
@@ -66,6 +66,10 @@
 			"Comment": "model-0.0.2-12-gfa8ad6f",
 			"Rev": "fa8ad6fec33561be4280a8f0514318c79d7f6cb6"
 		},
+		{
+			"ImportPath": "github.com/prometheus/procfs",
+			"Rev": "92faa308558161acab0ada1db048e9996ecec160"
+		},
 		{
 			"ImportPath": "github.com/stretchr/testify/assert",
 			"Rev": "9cc77fa25329013ce07362c7742952ff887361f2"
diff --git a/Godeps/_workspace/src/github.com/prometheus/client_golang/prometheus/process_collector_procfs.go b/Godeps/_workspace/src/github.com/prometheus/client_golang/prometheus/process_collector_procfs.go
index 5a09ded14..947e9c01a 100644
--- a/Godeps/_workspace/src/github.com/prometheus/client_golang/prometheus/process_collector_procfs.go
+++ b/Godeps/_workspace/src/github.com/prometheus/client_golang/prometheus/process_collector_procfs.go
@@ -15,7 +15,7 @@
 
 package prometheus
 
-import "github.com/prometheus/procfs"
+import "github.com/coreos/etcd/Godeps/_workspace/src/github.com/prometheus/procfs"
 
 func processCollectSupported() bool {
 	if _, err := procfs.NewStat(); err == nil {
diff --git a/Godeps/_workspace/src/github.com/prometheus/client_golang/prometheus/process_collector_test.go b/Godeps/_workspace/src/github.com/prometheus/client_golang/prometheus/process_collector_test.go
index 829715acd..1af824ef5 100644
--- a/Godeps/_workspace/src/github.com/prometheus/client_golang/prometheus/process_collector_test.go
+++ b/Godeps/_workspace/src/github.com/prometheus/client_golang/prometheus/process_collector_test.go
@@ -8,7 +8,7 @@ import (
 	"regexp"
 	"testing"
 
-	"github.com/prometheus/procfs"
+	"github.com/coreos/etcd/Godeps/_workspace/src/github.com/prometheus/procfs"
 )
 
 func TestProcessCollector(t *testing.T) {
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/AUTHORS.md b/Godeps/_workspace/src/github.com/prometheus/procfs/AUTHORS.md
new file mode 100644
index 000000000..6eb1935cd
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/AUTHORS.md
@@ -0,0 +1,11 @@
+The Prometheus project was started by Matt T. Proud (emeritus) and
+Julius Volz in 2012.
+
+Maintainers of this repository:
+
+* Tobias Schmidt <ts@soundcloud.com>
+
+The following individuals have contributed code to this repository
+(listed in alphabetical order):
+
+* Tobias Schmidt <ts@soundcloud.com>
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/CONTRIBUTING.md b/Godeps/_workspace/src/github.com/prometheus/procfs/CONTRIBUTING.md
new file mode 100644
index 000000000..5705f0fbe
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/CONTRIBUTING.md
@@ -0,0 +1,18 @@
+# Contributing
+
+Prometheus uses GitHub to manage reviews of pull requests.
+
+* If you have a trivial fix or improvement, go ahead and create a pull
+  request, addressing (with `@...`) one or more of the maintainers
+  (see [AUTHORS.md](AUTHORS.md)) in the description of the pull request.
+
+* If you plan to do something more involved, first discuss your ideas
+  on our [mailing list](https://groups.google.com/forum/?fromgroups#!forum/prometheus-developers).
+  This will avoid unnecessary work and surely give you and us a good deal
+  of inspiration.
+
+* Relevant coding style guidelines are the [Go Code Review
+  Comments](https://code.google.com/p/go-wiki/wiki/CodeReviewComments)
+  and the _Formatting and style_ section of Peter Bourgon's [Go: Best
+  Practices for Production
+  Environments](http://peter.bourgon.org/go-in-production/#formatting-and-style).
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/LICENSE b/Godeps/_workspace/src/github.com/prometheus/procfs/LICENSE
new file mode 100644
index 000000000..261eeb9e9
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/LICENSE
@@ -0,0 +1,201 @@
+                                 Apache License
+                           Version 2.0, January 2004
+                        http://www.apache.org/licenses/
+
+   TERMS AND CONDITIONS FOR USE, REPRODUCTION, AND DISTRIBUTION
+
+   1. Definitions.
+
+      "License" shall mean the terms and conditions for use, reproduction,
+      and distribution as defined by Sections 1 through 9 of this document.
+
+      "Licensor" shall mean the copyright owner or entity authorized by
+      the copyright owner that is granting the License.
+
+      "Legal Entity" shall mean the union of the acting entity and all
+      other entities that control, are controlled by, or are under common
+      control with that entity. For the purposes of this definition,
+      "control" means (i) the power, direct or indirect, to cause the
+      direction or management of such entity, whether by contract or
+      otherwise, or (ii) ownership of fifty percent (50%) or more of the
+      outstanding shares, or (iii) beneficial ownership of such entity.
+
+      "You" (or "Your") shall mean an individual or Legal Entity
+      exercising permissions granted by this License.
+
+      "Source" form shall mean the preferred form for making modifications,
+      including but not limited to software source code, documentation
+      source, and configuration files.
+
+      "Object" form shall mean any form resulting from mechanical
+      transformation or translation of a Source form, including but
+      not limited to compiled object code, generated documentation,
+      and conversions to other media types.
+
+      "Work" shall mean the work of authorship, whether in Source or
+      Object form, made available under the License, as indicated by a
+      copyright notice that is included in or attached to the work
+      (an example is provided in the Appendix below).
+
+      "Derivative Works" shall mean any work, whether in Source or Object
+      form, that is based on (or derived from) the Work and for which the
+      editorial revisions, annotations, elaborations, or other modifications
+      represent, as a whole, an original work of authorship. For the purposes
+      of this License, Derivative Works shall not include works that remain
+      separable from, or merely link (or bind by name) to the interfaces of,
+      the Work and Derivative Works thereof.
+
+      "Contribution" shall mean any work of authorship, including
+      the original version of the Work and any modifications or additions
+      to that Work or Derivative Works thereof, that is intentionally
+      submitted to Licensor for inclusion in the Work by the copyright owner
+      or by an individual or Legal Entity authorized to submit on behalf of
+      the copyright owner. For the purposes of this definition, "submitted"
+      means any form of electronic, verbal, or written communication sent
+      to the Licensor or its representatives, including but not limited to
+      communication on electronic mailing lists, source code control systems,
+      and issue tracking systems that are managed by, or on behalf of, the
+      Licensor for the purpose of discussing and improving the Work, but
+      excluding communication that is conspicuously marked or otherwise
+      designated in writing by the copyright owner as "Not a Contribution."
+
+      "Contributor" shall mean Licensor and any individual or Legal Entity
+      on behalf of whom a Contribution has been received by Licensor and
+      subsequently incorporated within the Work.
+
+   2. Grant of Copyright License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      copyright license to reproduce, prepare Derivative Works of,
+      publicly display, publicly perform, sublicense, and distribute the
+      Work and such Derivative Works in Source or Object form.
+
+   3. Grant of Patent License. Subject to the terms and conditions of
+      this License, each Contributor hereby grants to You a perpetual,
+      worldwide, non-exclusive, no-charge, royalty-free, irrevocable
+      (except as stated in this section) patent license to make, have made,
+      use, offer to sell, sell, import, and otherwise transfer the Work,
+      where such license applies only to those patent claims licensable
+      by such Contributor that are necessarily infringed by their
+      Contribution(s) alone or by combination of their Contribution(s)
+      with the Work to which such Contribution(s) was submitted. If You
+      institute patent litigation against any entity (including a
+      cross-claim or counterclaim in a lawsuit) alleging that the Work
+      or a Contribution incorporated within the Work constitutes direct
+      or contributory patent infringement, then any patent licenses
+      granted to You under this License for that Work shall terminate
+      as of the date such litigation is filed.
+
+   4. Redistribution. You may reproduce and distribute copies of the
+      Work or Derivative Works thereof in any medium, with or without
+      modifications, and in Source or Object form, provided that You
+      meet the following conditions:
+
+      (a) You must give any other recipients of the Work or
+          Derivative Works a copy of this License; and
+
+      (b) You must cause any modified files to carry prominent notices
+          stating that You changed the files; and
+
+      (c) You must retain, in the Source form of any Derivative Works
+          that You distribute, all copyright, patent, trademark, and
+          attribution notices from the Source form of the Work,
+          excluding those notices that do not pertain to any part of
+          the Derivative Works; and
+
+      (d) If the Work includes a "NOTICE" text file as part of its
+          distribution, then any Derivative Works that You distribute must
+          include a readable copy of the attribution notices contained
+          within such NOTICE file, excluding those notices that do not
+          pertain to any part of the Derivative Works, in at least one
+          of the following places: within a NOTICE text file distributed
+          as part of the Derivative Works; within the Source form or
+          documentation, if provided along with the Derivative Works; or,
+          within a display generated by the Derivative Works, if and
+          wherever such third-party notices normally appear. The contents
+          of the NOTICE file are for informational purposes only and
+          do not modify the License. You may add Your own attribution
+          notices within Derivative Works that You distribute, alongside
+          or as an addendum to the NOTICE text from the Work, provided
+          that such additional attribution notices cannot be construed
+          as modifying the License.
+
+      You may add Your own copyright statement to Your modifications and
+      may provide additional or different license terms and conditions
+      for use, reproduction, or distribution of Your modifications, or
+      for any such Derivative Works as a whole, provided Your use,
+      reproduction, and distribution of the Work otherwise complies with
+      the conditions stated in this License.
+
+   5. Submission of Contributions. Unless You explicitly state otherwise,
+      any Contribution intentionally submitted for inclusion in the Work
+      by You to the Licensor shall be under the terms and conditions of
+      this License, without any additional terms or conditions.
+      Notwithstanding the above, nothing herein shall supersede or modify
+      the terms of any separate license agreement you may have executed
+      with Licensor regarding such Contributions.
+
+   6. Trademarks. This License does not grant permission to use the trade
+      names, trademarks, service marks, or product names of the Licensor,
+      except as required for reasonable and customary use in describing the
+      origin of the Work and reproducing the content of the NOTICE file.
+
+   7. Disclaimer of Warranty. Unless required by applicable law or
+      agreed to in writing, Licensor provides the Work (and each
+      Contributor provides its Contributions) on an "AS IS" BASIS,
+      WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
+      implied, including, without limitation, any warranties or conditions
+      of TITLE, NON-INFRINGEMENT, MERCHANTABILITY, or FITNESS FOR A
+      PARTICULAR PURPOSE. You are solely responsible for determining the
+      appropriateness of using or redistributing the Work and assume any
+      risks associated with Your exercise of permissions under this License.
+
+   8. Limitation of Liability. In no event and under no legal theory,
+      whether in tort (including negligence), contract, or otherwise,
+      unless required by applicable law (such as deliberate and grossly
+      negligent acts) or agreed to in writing, shall any Contributor be
+      liable to You for damages, including any direct, indirect, special,
+      incidental, or consequential damages of any character arising as a
+      result of this License or out of the use or inability to use the
+      Work (including but not limited to damages for loss of goodwill,
+      work stoppage, computer failure or malfunction, or any and all
+      other commercial damages or losses), even if such Contributor
+      has been advised of the possibility of such damages.
+
+   9. Accepting Warranty or Additional Liability. While redistributing
+      the Work or Derivative Works thereof, You may choose to offer,
+      and charge a fee for, acceptance of support, warranty, indemnity,
+      or other liability obligations and/or rights consistent with this
+      License. However, in accepting such obligations, You may act only
+      on Your own behalf and on Your sole responsibility, not on behalf
+      of any other Contributor, and only if You agree to indemnify,
+      defend, and hold each Contributor harmless for any liability
+      incurred by, or claims asserted against, such Contributor by reason
+      of your accepting any such warranty or additional liability.
+
+   END OF TERMS AND CONDITIONS
+
+   APPENDIX: How to apply the Apache License to your work.
+
+      To apply the Apache License to your work, attach the following
+      boilerplate notice, with the fields enclosed by brackets "[]"
+      replaced with your own identifying information. (Don't include
+      the brackets!)  The text should be enclosed in the appropriate
+      comment syntax for the file format. We also recommend that a
+      file or class name and description of purpose be included on the
+      same "printed page" as the copyright notice for easier
+      identification within third-party archives.
+
+   Copyright [yyyy] [name of copyright owner]
+
+   Licensed under the Apache License, Version 2.0 (the "License");
+   you may not use this file except in compliance with the License.
+   You may obtain a copy of the License at
+
+       http://www.apache.org/licenses/LICENSE-2.0
+
+   Unless required by applicable law or agreed to in writing, software
+   distributed under the License is distributed on an "AS IS" BASIS,
+   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+   See the License for the specific language governing permissions and
+   limitations under the License.
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/NOTICE b/Godeps/_workspace/src/github.com/prometheus/procfs/NOTICE
new file mode 100644
index 000000000..53c5e9aa1
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/NOTICE
@@ -0,0 +1,7 @@
+procfs provides functions to retrieve system, kernel and process
+metrics from the pseudo-filesystem proc.
+
+Copyright 2014-2015 The Prometheus Authors
+
+This product includes software developed at
+SoundCloud Ltd. (http://soundcloud.com/).
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/README.md b/Godeps/_workspace/src/github.com/prometheus/procfs/README.md
new file mode 100644
index 000000000..0edf49666
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/README.md
@@ -0,0 +1,11 @@
+# procfs
+
+This procfs package provides functions to retrieve system, kernel and process
+metrics from the pseudo-filesystem proc.
+
+[![GoDoc](https://godoc.org/github.com/prometheus/procfs?status.png)](https://godoc.org/github.com/prometheus/procfs)
+[![Circle CI](https://circleci.com/gh/prometheus/procfs.svg?style=svg)](https://circleci.com/gh/prometheus/procfs)
+
+# Testing
+
+    $ go test
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/doc.go b/Godeps/_workspace/src/github.com/prometheus/procfs/doc.go
new file mode 100644
index 000000000..c6400345f
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/doc.go
@@ -0,0 +1,45 @@
+// Copyright 2014 Prometheus Team
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+// http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+// Package procfs provides functions to retrieve system, kernel and process
+// metrics from the pseudo-filesystem proc.
+//
+// Example:
+//
+//    package main
+//
+//    import (
+//    	"fmt"
+//    	"log"
+//
+//    	"github.com/prometheus/client_golang/procfs"
+//    )
+//
+//    func main() {
+//    	p, err := procfs.Self()
+//    	if err != nil {
+//    		log.Fatalf("could not get process: %s", err)
+//    	}
+//
+//    	stat, err := p.Stat()
+//    	if err != nil {
+//    		log.Fatalf("could not get process stat: %s", err)
+//    	}
+//
+//    	fmt.Printf("command:  %s\n", stat.Comm)
+//    	fmt.Printf("cpu time: %fs\n", stat.CPUTime())
+//    	fmt.Printf("vsize:    %dB\n", stat.VirtualMemory())
+//    	fmt.Printf("rss:      %dB\n", stat.ResidentMemory())
+//    }
+//
+package procfs
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/cmdline b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/cmdline
new file mode 100644
index 000000000..d2d8ef887
Binary files /dev/null and b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/cmdline differ
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/fd/0 b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/fd/0
new file mode 100644
index 000000000..e69de29bb
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/fd/1 b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/fd/1
new file mode 100644
index 000000000..e69de29bb
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/fd/2 b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/fd/2
new file mode 100644
index 000000000..e69de29bb
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/fd/3 b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/fd/3
new file mode 100644
index 000000000..e69de29bb
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/fd/4 b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/fd/4
new file mode 100644
index 000000000..e69de29bb
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/limits b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/limits
new file mode 100644
index 000000000..23c6b6898
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/limits
@@ -0,0 +1,17 @@
+Limit                     Soft Limit           Hard Limit           Units
+Max cpu time              unlimited            unlimited            seconds
+Max file size             unlimited            unlimited            bytes
+Max data size             unlimited            unlimited            bytes
+Max stack size            8388608              unlimited            bytes
+Max core file size        0                    unlimited            bytes
+Max resident set          unlimited            unlimited            bytes
+Max processes             62898                62898                processes
+Max open files            2048                 4096                 files
+Max locked memory         65536                65536                bytes
+Max address space         unlimited            unlimited            bytes
+Max file locks            unlimited            unlimited            locks
+Max pending signals       62898                62898                signals
+Max msgqueue size         819200               819200               bytes
+Max nice priority         0                    0
+Max realtime priority     0                    0
+Max realtime timeout      unlimited            unlimited            us
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/stat b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/stat
new file mode 100644
index 000000000..438aaa9dc
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/26231/stat
@@ -0,0 +1 @@
+26231 (vim) R 5392 7446 5392 34835 7446 4218880 32533 309516 26 82 1677 44 158 99 20 0 1 0 82375 56274944 1981 18446744073709551615 4194304 6294284 140736914091744 140736914087944 139965136429984 0 0 12288 1870679807 0 0 0 17 0 0 0 31 0 0 8391624 8481048 16420864 140736914093252 140736914093279 140736914093279 140736914096107 0
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/584/stat b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/584/stat
new file mode 100644
index 000000000..65b9369d1
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/584/stat
@@ -0,0 +1,2 @@
+1020 ((a b ) ( c d) ) R 28378 1020 28378 34842 1020 4218880 286 0 0 0 0 0 0 0 20 0 1 0 10839175 10395648 155 18446744073709551615 4194304 4238788 140736466511168 140736466511168 140609271124624 0 0 0 0 0 0 0 17 5 0 0 0 0 0 6336016 6337300 25579520 140736466515030 140736466515061 140736466515061 140736466518002 0
+#!/bin/cat /proc/self/stat
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/stat b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/stat
new file mode 100644
index 000000000..dabb96f74
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/fixtures/stat
@@ -0,0 +1,16 @@
+cpu  301854 612 111922 8979004 3552 2 3944 0 0 0
+cpu0 44490 19 21045 1087069 220 1 3410 0 0 0
+cpu1 47869 23 16474 1110787 591 0 46 0 0 0
+cpu2 46504 36 15916 1112321 441 0 326 0 0 0
+cpu3 47054 102 15683 1113230 533 0 60 0 0 0
+cpu4 28413 25 10776 1140321 217 0 8 0 0 0
+cpu5 29271 101 11586 1136270 672 0 30 0 0 0
+cpu6 29152 36 10276 1139721 319 0 29 0 0 0
+cpu7 29098 268 10164 1139282 555 0 31 0 0 0
+intr 8885917 17 0 0 0 0 0 0 0 1 79281 0 0 0 0 0 0 0 231237 0 0 0 0 250586 103 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 223424 190745 13 906 1283803 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0
+ctxt 38014093
+btime 1418183276
+processes 26442
+procs_running 2
+procs_blocked 0
+softirq 5057579 250191 1481983 1647 211099 186066 0 1783454 622196 12499 508444
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/fs.go b/Godeps/_workspace/src/github.com/prometheus/procfs/fs.go
new file mode 100644
index 000000000..838474aba
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/fs.go
@@ -0,0 +1,36 @@
+package procfs
+
+import (
+	"fmt"
+	"os"
+	"path"
+)
+
+// FS represents the pseudo-filesystem proc, which provides an interface to
+// kernel data structures.
+type FS string
+
+// DefaultMountPoint is the common mount point of the proc filesystem.
+const DefaultMountPoint = "/proc"
+
+// NewFS returns a new FS mounted under the given mountPoint. It will error
+// if the mount point can't be read.
+func NewFS(mountPoint string) (FS, error) {
+	info, err := os.Stat(mountPoint)
+	if err != nil {
+		return "", fmt.Errorf("could not read %s: %s", mountPoint, err)
+	}
+	if !info.IsDir() {
+		return "", fmt.Errorf("mount point %s is not a directory", mountPoint)
+	}
+
+	return FS(mountPoint), nil
+}
+
+func (fs FS) stat(p string) (os.FileInfo, error) {
+	return os.Stat(path.Join(string(fs), p))
+}
+
+func (fs FS) open(p string) (*os.File, error) {
+	return os.Open(path.Join(string(fs), p))
+}
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/fs_test.go b/Godeps/_workspace/src/github.com/prometheus/procfs/fs_test.go
new file mode 100644
index 000000000..91f1c6c97
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/fs_test.go
@@ -0,0 +1,13 @@
+package procfs
+
+import "testing"
+
+func TestNewFS(t *testing.T) {
+	if _, err := NewFS("foobar"); err == nil {
+		t.Error("want NewFS to fail for non-existing mount point")
+	}
+
+	if _, err := NewFS("procfs.go"); err == nil {
+		t.Error("want NewFS to fail if mount point is not a directory")
+	}
+}
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/proc.go b/Godeps/_workspace/src/github.com/prometheus/procfs/proc.go
new file mode 100644
index 000000000..21445cf17
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/proc.go
@@ -0,0 +1,149 @@
+package procfs
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+	"path"
+	"strconv"
+	"strings"
+)
+
+// Proc provides information about a running process.
+type Proc struct {
+	// The process ID.
+	PID int
+
+	fs FS
+}
+
+// Procs represents a list of Proc structs.
+type Procs []Proc
+
+func (p Procs) Len() int           { return len(p) }
+func (p Procs) Swap(i, j int)      { p[i], p[j] = p[j], p[i] }
+func (p Procs) Less(i, j int) bool { return p[i].PID < p[j].PID }
+
+// Self returns a process for the current process.
+func Self() (Proc, error) {
+	return NewProc(os.Getpid())
+}
+
+// NewProc returns a process for the given pid under /proc.
+func NewProc(pid int) (Proc, error) {
+	fs, err := NewFS(DefaultMountPoint)
+	if err != nil {
+		return Proc{}, err
+	}
+
+	return fs.NewProc(pid)
+}
+
+// AllProcs returns a list of all currently avaible processes under /proc.
+func AllProcs() (Procs, error) {
+	fs, err := NewFS(DefaultMountPoint)
+	if err != nil {
+		return Procs{}, err
+	}
+
+	return fs.AllProcs()
+}
+
+// NewProc returns a process for the given pid.
+func (fs FS) NewProc(pid int) (Proc, error) {
+	if _, err := fs.stat(strconv.Itoa(pid)); err != nil {
+		return Proc{}, err
+	}
+
+	return Proc{PID: pid, fs: fs}, nil
+}
+
+// AllProcs returns a list of all currently avaible processes.
+func (fs FS) AllProcs() (Procs, error) {
+	d, err := fs.open("")
+	if err != nil {
+		return Procs{}, err
+	}
+	defer d.Close()
+
+	names, err := d.Readdirnames(-1)
+	if err != nil {
+		return Procs{}, fmt.Errorf("could not read %s: %s", d.Name(), err)
+	}
+
+	p := Procs{}
+	for _, n := range names {
+		pid, err := strconv.ParseInt(n, 10, 64)
+		if err != nil {
+			continue
+		}
+		p = append(p, Proc{PID: int(pid), fs: fs})
+	}
+
+	return p, nil
+}
+
+// CmdLine returns the command line of a process.
+func (p Proc) CmdLine() ([]string, error) {
+	f, err := p.open("cmdline")
+	if err != nil {
+		return nil, err
+	}
+	defer f.Close()
+
+	data, err := ioutil.ReadAll(f)
+	if err != nil {
+		return nil, err
+	}
+
+	return strings.Split(string(data[:len(data)-1]), string(byte(0))), nil
+}
+
+// FileDescriptors returns the currently open file descriptors of a process.
+func (p Proc) FileDescriptors() ([]uintptr, error) {
+	names, err := p.fileDescriptors()
+	if err != nil {
+		return nil, err
+	}
+
+	fds := make([]uintptr, len(names))
+	for i, n := range names {
+		fd, err := strconv.ParseInt(n, 10, 32)
+		if err != nil {
+			return nil, fmt.Errorf("could not parse fd %s: %s", n, err)
+		}
+		fds[i] = uintptr(fd)
+	}
+
+	return fds, nil
+}
+
+// FileDescriptorsLen returns the number of currently open file descriptors of
+// a process.
+func (p Proc) FileDescriptorsLen() (int, error) {
+	fds, err := p.fileDescriptors()
+	if err != nil {
+		return 0, err
+	}
+
+	return len(fds), nil
+}
+
+func (p Proc) fileDescriptors() ([]string, error) {
+	d, err := p.open("fd")
+	if err != nil {
+		return nil, err
+	}
+	defer d.Close()
+
+	names, err := d.Readdirnames(-1)
+	if err != nil {
+		return nil, fmt.Errorf("could not read %s: %s", d.Name(), err)
+	}
+
+	return names, nil
+}
+
+func (p Proc) open(pa string) (*os.File, error) {
+	return p.fs.open(path.Join(strconv.Itoa(p.PID), pa))
+}
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/proc_limits.go b/Godeps/_workspace/src/github.com/prometheus/procfs/proc_limits.go
new file mode 100644
index 000000000..9f080b9f6
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/proc_limits.go
@@ -0,0 +1,111 @@
+package procfs
+
+import (
+	"bufio"
+	"fmt"
+	"regexp"
+	"strconv"
+)
+
+// ProcLimits represents the soft limits for each of the process's resource
+// limits.
+type ProcLimits struct {
+	CPUTime          int
+	FileSize         int
+	DataSize         int
+	StackSize        int
+	CoreFileSize     int
+	ResidentSet      int
+	Processes        int
+	OpenFiles        int
+	LockedMemory     int
+	AddressSpace     int
+	FileLocks        int
+	PendingSignals   int
+	MsqqueueSize     int
+	NicePriority     int
+	RealtimePriority int
+	RealtimeTimeout  int
+}
+
+const (
+	limitsFields    = 3
+	limitsUnlimited = "unlimited"
+)
+
+var (
+	limitsDelimiter = regexp.MustCompile("  +")
+)
+
+// NewLimits returns the current soft limits of the process.
+func (p Proc) NewLimits() (ProcLimits, error) {
+	f, err := p.open("limits")
+	if err != nil {
+		return ProcLimits{}, err
+	}
+	defer f.Close()
+
+	var (
+		l = ProcLimits{}
+		s = bufio.NewScanner(f)
+	)
+	for s.Scan() {
+		fields := limitsDelimiter.Split(s.Text(), limitsFields)
+		if len(fields) != limitsFields {
+			return ProcLimits{}, fmt.Errorf(
+				"couldn't parse %s line %s", f.Name(), s.Text())
+		}
+
+		switch fields[0] {
+		case "Max cpu time":
+			l.CPUTime, err = parseInt(fields[1])
+		case "Max file size":
+			l.FileLocks, err = parseInt(fields[1])
+		case "Max data size":
+			l.DataSize, err = parseInt(fields[1])
+		case "Max stack size":
+			l.StackSize, err = parseInt(fields[1])
+		case "Max core file size":
+			l.CoreFileSize, err = parseInt(fields[1])
+		case "Max resident set":
+			l.ResidentSet, err = parseInt(fields[1])
+		case "Max processes":
+			l.Processes, err = parseInt(fields[1])
+		case "Max open files":
+			l.OpenFiles, err = parseInt(fields[1])
+		case "Max locked memory":
+			l.LockedMemory, err = parseInt(fields[1])
+		case "Max address space":
+			l.AddressSpace, err = parseInt(fields[1])
+		case "Max file locks":
+			l.FileLocks, err = parseInt(fields[1])
+		case "Max pending signals":
+			l.PendingSignals, err = parseInt(fields[1])
+		case "Max msgqueue size":
+			l.MsqqueueSize, err = parseInt(fields[1])
+		case "Max nice priority":
+			l.NicePriority, err = parseInt(fields[1])
+		case "Max realtime priority":
+			l.RealtimePriority, err = parseInt(fields[1])
+		case "Max realtime timeout":
+			l.RealtimeTimeout, err = parseInt(fields[1])
+		}
+
+		if err != nil {
+			return ProcLimits{}, err
+		}
+	}
+
+	return l, s.Err()
+}
+
+func parseInt(s string) (int, error) {
+	if s == limitsUnlimited {
+		return -1, nil
+	}
+	i, err := strconv.ParseInt(s, 10, 32)
+	if err != nil {
+		return 0, fmt.Errorf("couldn't parse value %s: %s", s, err)
+	}
+	return int(i), nil
+}
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/proc_limits_test.go b/Godeps/_workspace/src/github.com/prometheus/procfs/proc_limits_test.go
new file mode 100644
index 000000000..ca7a254da
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/proc_limits_test.go
@@ -0,0 +1,36 @@
+package procfs
+
+import "testing"
+
+func TestNewLimits(t *testing.T) {
+	fs, err := NewFS("fixtures")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	p, err := fs.NewProc(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	l, err := p.NewLimits()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, test := range []struct {
+		name string
+		want int
+		got  int
+	}{
+		{name: "cpu time", want: -1, got: l.CPUTime},
+		{name: "open files", want: 2048, got: l.OpenFiles},
+		{name: "msgqueue size", want: 819200, got: l.MsqqueueSize},
+		{name: "nice priority", want: 0, got: l.NicePriority},
+		{name: "address space", want: -1, got: l.AddressSpace},
+	} {
+		if test.want != test.got {
+			t.Errorf("want %s %d, got %d", test.name, test.want, test.got)
+		}
+	}
+}
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/proc_stat.go b/Godeps/_workspace/src/github.com/prometheus/procfs/proc_stat.go
new file mode 100644
index 000000000..1e027762e
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/proc_stat.go
@@ -0,0 +1,165 @@
+package procfs
+
+import (
+	"bytes"
+	"fmt"
+	"io/ioutil"
+	"os"
+)
+
+// #include <unistd.h>
+import "C"
+
+// ProcStat provides status information about the process,
+// read from /proc/[pid]/stat.
+type ProcStat struct {
+	// The process ID.
+	PID int
+	// The filename of the executable.
+	Comm string
+	// The process state.
+	State string
+	// The PID of the parent of this process.
+	PPID int
+	// The process group ID of the process.
+	PGRP int
+	// The session ID of the process.
+	Session int
+	// The controlling terminal of the process.
+	TTY int
+	// The ID of the foreground process group of the controlling terminal of
+	// the process.
+	TPGID int
+	// The kernel flags word of the process.
+	Flags uint
+	// The number of minor faults the process has made which have not required
+	// loading a memory page from disk.
+	MinFlt uint
+	// The number of minor faults that the process's waited-for children have
+	// made.
+	CMinFlt uint
+	// The number of major faults the process has made which have required
+	// loading a memory page from disk.
+	MajFlt uint
+	// The number of major faults that the process's waited-for children have
+	// made.
+	CMajFlt uint
+	// Amount of time that this process has been scheduled in user mode,
+	// measured in clock ticks.
+	UTime uint
+	// Amount of time that this process has been scheduled in kernel mode,
+	// measured in clock ticks.
+	STime uint
+	// Amount of time that this process's waited-for children have been
+	// scheduled in user mode, measured in clock ticks.
+	CUTime uint
+	// Amount of time that this process's waited-for children have been
+	// scheduled in kernel mode, measured in clock ticks.
+	CSTime uint
+	// For processes running a real-time scheduling policy, this is the negated
+	// scheduling priority, minus one.
+	Priority int
+	// The nice value, a value in the range 19 (low priority) to -20 (high
+	// priority).
+	Nice int
+	// Number of threads in this process.
+	NumThreads int
+	// The time the process started after system boot, the value is expressed
+	// in clock ticks.
+	Starttime uint64
+	// Virtual memory size in bytes.
+	VSize int
+	// Resident set size in pages.
+	RSS int
+
+	fs FS
+}
+
+// NewStat returns the current status information of the process.
+func (p Proc) NewStat() (ProcStat, error) {
+	f, err := p.open("stat")
+	if err != nil {
+		return ProcStat{}, err
+	}
+	defer f.Close()
+
+	data, err := ioutil.ReadAll(f)
+	if err != nil {
+		return ProcStat{}, err
+	}
+
+	var (
+		ignore int
+
+		s = ProcStat{PID: p.PID, fs: p.fs}
+		l = bytes.Index(data, []byte("("))
+		r = bytes.LastIndex(data, []byte(")"))
+	)
+
+	if l < 0 || r < 0 {
+		return ProcStat{}, fmt.Errorf(
+			"unexpected format, couldn't extract comm: %s",
+			data,
+		)
+	}
+
+	s.Comm = string(data[l+1 : r])
+	_, err = fmt.Fscan(
+		bytes.NewBuffer(data[r+2:]),
+		&s.State,
+		&s.PPID,
+		&s.PGRP,
+		&s.Session,
+		&s.TTY,
+		&s.TPGID,
+		&s.Flags,
+		&s.MinFlt,
+		&s.CMinFlt,
+		&s.MajFlt,
+		&s.CMajFlt,
+		&s.UTime,
+		&s.STime,
+		&s.CUTime,
+		&s.CSTime,
+		&s.Priority,
+		&s.Nice,
+		&s.NumThreads,
+		&ignore,
+		&s.Starttime,
+		&s.VSize,
+		&s.RSS,
+	)
+	if err != nil {
+		return ProcStat{}, err
+	}
+
+	return s, nil
+}
+
+// VirtualMemory returns the virtual memory size in bytes.
+func (s ProcStat) VirtualMemory() int {
+	return s.VSize
+}
+
+// ResidentMemory returns the resident memory size in bytes.
+func (s ProcStat) ResidentMemory() int {
+	return s.RSS * os.Getpagesize()
+}
+
+// StartTime returns the unix timestamp of the process in seconds.
+func (s ProcStat) StartTime() (float64, error) {
+	stat, err := s.fs.NewStat()
+	if err != nil {
+		return 0, err
+	}
+	return float64(stat.BootTime) + (float64(s.Starttime) / ticks()), nil
+}
+
+// CPUTime returns the total CPU user and system time in seconds.
+func (s ProcStat) CPUTime() float64 {
+	return float64(s.UTime+s.STime) / ticks()
+}
+
+func ticks() float64 {
+	return float64(C.sysconf(C._SC_CLK_TCK)) // most likely 100
+}
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/proc_stat_test.go b/Godeps/_workspace/src/github.com/prometheus/procfs/proc_stat_test.go
new file mode 100644
index 000000000..e4d5cacfa
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/proc_stat_test.go
@@ -0,0 +1,112 @@
+package procfs
+
+import "testing"
+
+func TestProcStat(t *testing.T) {
+	fs, err := NewFS("fixtures")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	p, err := fs.NewProc(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	s, err := p.NewStat()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	for _, test := range []struct {
+		name string
+		want int
+		got  int
+	}{
+		{name: "pid", want: 26231, got: s.PID},
+		{name: "user time", want: 1677, got: int(s.UTime)},
+		{name: "system time", want: 44, got: int(s.STime)},
+		{name: "start time", want: 82375, got: int(s.Starttime)},
+		{name: "virtual memory size", want: 56274944, got: s.VSize},
+		{name: "resident set size", want: 1981, got: s.RSS},
+	} {
+		if test.want != test.got {
+			t.Errorf("want %s %d, got %d", test.name, test.want, test.got)
+		}
+	}
+}
+
+func TestProcStatComm(t *testing.T) {
+	s1, err := testProcStat(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if want, got := "vim", s1.Comm; want != got {
+		t.Errorf("want comm %s, got %s", want, got)
+	}
+
+	s2, err := testProcStat(584)
+	if err != nil {
+		t.Fatal(err)
+	}
+	if want, got := "(a b ) ( c d) ", s2.Comm; want != got {
+		t.Errorf("want comm %s, got %s", want, got)
+	}
+}
+
+func TestProcStatVirtualMemory(t *testing.T) {
+	s, err := testProcStat(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if want, got := 56274944, s.VirtualMemory(); want != got {
+		t.Errorf("want virtual memory %d, got %d", want, got)
+	}
+}
+
+func TestProcStatResidentMemory(t *testing.T) {
+	s, err := testProcStat(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if want, got := 1981*4096, s.ResidentMemory(); want != got {
+		t.Errorf("want resident memory %d, got %d", want, got)
+	}
+}
+
+func TestProcStatStartTime(t *testing.T) {
+	s, err := testProcStat(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	time, err := s.StartTime()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if want, got := 1418184099.75, time; want != got {
+		t.Errorf("want start time %f, got %f", want, got)
+	}
+}
+
+func TestProcStatCPUTime(t *testing.T) {
+	s, err := testProcStat(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if want, got := 17.21, s.CPUTime(); want != got {
+		t.Errorf("want cpu time %f, got %f", want, got)
+	}
+}
+
+func testProcStat(pid int) (ProcStat, error) {
+	p, err := testProcess(pid)
+	if err != nil {
+		return ProcStat{}, err
+	}
+
+	return p.NewStat()
+}
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/proc_test.go b/Godeps/_workspace/src/github.com/prometheus/procfs/proc_test.go
new file mode 100644
index 000000000..bd234a14c
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/proc_test.go
@@ -0,0 +1,123 @@
+package procfs
+
+import (
+	"os"
+	"reflect"
+	"sort"
+	"testing"
+)
+
+func TestSelf(t *testing.T) {
+	p1, err := NewProc(os.Getpid())
+	if err != nil {
+		t.Fatal(err)
+	}
+	p2, err := Self()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if !reflect.DeepEqual(p1, p2) {
+		t.Errorf("want process %v to equal %v", p1, p2)
+	}
+}
+
+func TestAllProcs(t *testing.T) {
+	fs, err := NewFS("fixtures")
+	if err != nil {
+		t.Fatal(err)
+	}
+	procs, err := fs.AllProcs()
+	if err != nil {
+		t.Fatal(err)
+	}
+	sort.Sort(procs)
+	for i, p := range []*Proc{{PID: 584}, {PID: 26231}} {
+		if want, got := p.PID, procs[i].PID; want != got {
+			t.Errorf("want processes %d, got %d", want, got)
+		}
+	}
+}
+
+func TestCmdLine(t *testing.T) {
+	p1, err := testProcess(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+	c, err := p1.CmdLine()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if want := []string{"vim", "test.go", "+10"}; !reflect.DeepEqual(want, c) {
+		t.Errorf("want cmdline %v, got %v", want, c)
+	}
+}
+
+func TestFileDescriptors(t *testing.T) {
+	p1, err := testProcess(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+	fds, err := p1.FileDescriptors()
+	if err != nil {
+		t.Fatal(err)
+	}
+	sort.Sort(byUintptr(fds))
+	if want := []uintptr{0, 1, 2, 3, 4}; !reflect.DeepEqual(want, fds) {
+		t.Errorf("want fds %v, got %v", want, fds)
+	}
+
+	p2, err := Self()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	fdsBefore, err := p2.FileDescriptors()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	s, err := os.Open("fixtures")
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer s.Close()
+
+	fdsAfter, err := p2.FileDescriptors()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if len(fdsBefore)+1 != len(fdsAfter) {
+		t.Errorf("want fds %v+1 to equal %v", fdsBefore, fdsAfter)
+	}
+}
+
+func TestFileDescriptorsLen(t *testing.T) {
+	p1, err := testProcess(26231)
+	if err != nil {
+		t.Fatal(err)
+	}
+	l, err := p1.FileDescriptorsLen()
+	if err != nil {
+		t.Fatal(err)
+	}
+	if want, got := 5, l; want != got {
+		t.Errorf("want fds %d, got %d", want, got)
+	}
+}
+
+func testProcess(pid int) (Proc, error) {
+	fs, err := NewFS("fixtures")
+	if err != nil {
+		return Proc{}, err
+	}
+
+	return fs.NewProc(pid)
+}
+
+type byUintptr []uintptr
+
+func (a byUintptr) Len() int           { return len(a) }
+func (a byUintptr) Swap(i, j int)      { a[i], a[j] = a[j], a[i] }
+func (a byUintptr) Less(i, j int) bool { return a[i] < a[j] }
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/stat.go b/Godeps/_workspace/src/github.com/prometheus/procfs/stat.go
new file mode 100644
index 000000000..26fefb0fa
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/stat.go
@@ -0,0 +1,55 @@
+package procfs
+
+import (
+	"bufio"
+	"fmt"
+	"strconv"
+	"strings"
+)
+
+// Stat represents kernel/system statistics.
+type Stat struct {
+	// Boot time in seconds since the Epoch.
+	BootTime int64
+}
+
+// NewStat returns kernel/system statistics read from /proc/stat.
+func NewStat() (Stat, error) {
+	fs, err := NewFS(DefaultMountPoint)
+	if err != nil {
+		return Stat{}, err
+	}
+
+	return fs.NewStat()
+}
+
+// NewStat returns an information about current kernel/system statistics.
+func (fs FS) NewStat() (Stat, error) {
+	f, err := fs.open("stat")
+	if err != nil {
+		return Stat{}, err
+	}
+	defer f.Close()
+
+	s := bufio.NewScanner(f)
+	for s.Scan() {
+		line := s.Text()
+		if !strings.HasPrefix(line, "btime") {
+			continue
+		}
+		fields := strings.Fields(line)
+		if len(fields) != 2 {
+			return Stat{}, fmt.Errorf("couldn't parse %s line %s", f.Name(), line)
+		}
+		i, err := strconv.ParseInt(fields[1], 10, 32)
+		if err != nil {
+			return Stat{}, fmt.Errorf("couldn't parse %s: %s", fields[1], err)
+		}
+		return Stat{BootTime: i}, nil
+	}
+	if err := s.Err(); err != nil {
+		return Stat{}, fmt.Errorf("couldn't parse %s: %s", f.Name(), err)
+	}
+
+	return Stat{}, fmt.Errorf("couldn't parse %s, missing btime", f.Name())
+}
diff --git a/Godeps/_workspace/src/github.com/prometheus/procfs/stat_test.go b/Godeps/_workspace/src/github.com/prometheus/procfs/stat_test.go
new file mode 100644
index 000000000..24b5d61f8
--- /dev/null
+++ b/Godeps/_workspace/src/github.com/prometheus/procfs/stat_test.go
@@ -0,0 +1,19 @@
+package procfs
+
+import "testing"
+
+func TestStat(t *testing.T) {
+	fs, err := NewFS("fixtures")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	s, err := fs.NewStat()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if want, got := int64(1418183276), s.BootTime; want != got {
+		t.Errorf("want boot time %d, got %d", want, got)
+	}
+}
diff --git a/etcdmain/const_unix.go b/etcdmain/const_unix.go
index 9c87cd14a..335501f1b 100644
--- a/etcdmain/const_unix.go
+++ b/etcdmain/const_unix.go
@@ -16,6 +16,11 @@
 
 package etcdmain
 
+import (
+	// import procfs FIX godeps.
+	_ "github.com/coreos/etcd/Godeps/_workspace/src/github.com/prometheus/procfs"
+)
+
 const (
 	defaultMaxSnapshots = 5
 	defaultMaxWALs      = 5