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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1453) stress.java
Date Wed, 22 Dec 2010 23:05:05 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12974433#action_12974433
] 

Brandon Williams commented on CASSANDRA-1453:
---------------------------------------------

Minor nits: remove .gitignore, remove @author tags.

Wishlist: since we're now dealing with the JVM, it'd be nice to have an option for the amount
of operations to warmup for, both to warm the client JVM as well as Cassandra, before actually
performing the benchmark.

> stress.java
> -----------
>
>                 Key: CASSANDRA-1453
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-1453
>             Project: Cassandra
>          Issue Type: New Feature
>          Components: Tools
>            Reporter: Jonathan Ellis
>            Assignee: Brandon Williams
>            Priority: Minor
>             Fix For: 0.7.1
>
>         Attachments: stress.patch
>
>
> stress.py seems to scale poorly past a fairly small number of threads/processes.  (against
a 3-node, RF=1 cluster, I got 3x as much throughput with 4 machines running stress.py -t 32,
as running 1 with -t 128.  these were 8-core client machines, and -t 128 reported only 50%
cpu used.)
> since we ship with the thrift java api pre-built, this would also mean not making people
build thrift before using the stress test, which is at best a pain for newcomers and on Windows
a major hurdle.

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