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https://issues.apache.org/jira/browse/CASSANDRA-6074?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Ryan McGuire updated CASSANDRA-6074:
------------------------------------
Description:
I'm seeing a regression in stress reads introduced in 2.0.1. Note, that this is
a separate regression from CASSANDRA-5933.
Setup
* 4 node cluster using default settings
* Write: -F 30000000 -n 30000000 -i 5 -l 2
* Read: -n 30000000 -o read -i 5
I tried this three times on 2.0.0 and on 2.0.1(tentative; eb96db6c)
2.0.0 is fine, but 2.0.1 timed out of it's read 2 out of the 3 times:
!stress 2.0.0 vs 2.0.01.png!
[Data can be viewed
here|http://ryanmcguire.info/ds/graph/graph.html?stats=stats.2.0.0v2.0.1.json&metric=interval_op_rate&operation=stress-read&smoothing=4]
I will bisect and update this when I find the commit that introduced this.
was:
I'm seeing a regression in stress reads introduced in 2.0.1.
Setup
* 4 node cluster using default settings
* Write: -F 30000000 -n 30000000 -i 5 -l 2
* Read: -n 30000000 -o read -i 5
I tried this three times on 2.0.0 and on 2.0.1(tentative; eb96db6c)
2.0.0 is fine, but 2.0.1 timed out of it's read 2 out of the 3 times:
!stress 2.0.0 vs 2.0.01.png!
[Data can be viewed
here|http://ryanmcguire.info/ds/graph/graph.html?stats=stats.2.0.0v2.0.1.json&metric=interval_op_rate&operation=stress-read&smoothing=4]
I will bisect and update this when I find the commit that introduced this.
> Read regression in 2.0.1
> ------------------------
>
> Key: CASSANDRA-6074
> URL: https://issues.apache.org/jira/browse/CASSANDRA-6074
> Project: Cassandra
> Issue Type: Bug
> Reporter: Ryan McGuire
> Attachments: stress 2.0.0 vs 2.0.01.png
>
>
> I'm seeing a regression in stress reads introduced in 2.0.1. Note, that this
> is a separate regression from CASSANDRA-5933.
> Setup
> * 4 node cluster using default settings
> * Write: -F 30000000 -n 30000000 -i 5 -l 2
> * Read: -n 30000000 -o read -i 5
> I tried this three times on 2.0.0 and on 2.0.1(tentative; eb96db6c)
> 2.0.0 is fine, but 2.0.1 timed out of it's read 2 out of the 3 times:
> !stress 2.0.0 vs 2.0.01.png!
> [Data can be viewed
> here|http://ryanmcguire.info/ds/graph/graph.html?stats=stats.2.0.0v2.0.1.json&metric=interval_op_rate&operation=stress-read&smoothing=4]
> I will bisect and update this when I find the commit that introduced this.
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