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docs: update tuning.md to match today's situation

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1. etcd requires that election-timeout >= 5 * heartbeat-interval
2. etcd doesn't have flag -snapshot
This commit is contained in:
Yicheng Qin 2015-07-13 16:35:30 -07:00
parent 5be545b872
commit 8b7c600009
1 changed files with 2 additions and 12 deletions
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14
Documentation/tuning.md
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@ -25,8 +25,8 @@ The election timeout should be set based on the heartbeat interval and your netw
Election timeouts should be at least 10 times your ping time so it can account for variance in your network.
For example, if the ping time between your nodes is 10ms then you should have at least a 100ms election timeout.
You should also set your election timeout to at least 4 to 5 times your heartbeat interval to account for variance in leader replication.
For a heartbeat interval of 50ms you should set your election timeout to at least 200ms - 250ms.
You should also set your election timeout to at least 5 to 10 times your heartbeat interval to account for variance in leader replication.
For a heartbeat interval of 50ms you should set your election timeout to at least 250ms - 500ms.
You can override the default values on the command line:
@ -62,13 +62,3 @@ $ etcd -snapshot-count=5000
# Environment variables:
$ ETCD_SNAPSHOT_COUNT=5000 etcd
```
You can also disable snapshotting by adding the following to your command line:
```sh
# Command line arguments:
$ etcd -snapshot false
# Environment variables:
$ ETCD_SNAPSHOT=false etcd
```