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From "Pavel Yaskevich (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1453) stress.java
Date Fri, 22 Oct 2010 17:03:16 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12923911#action_12923911
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Pavel Yaskevich commented on CASSANDRA-1453:
--------------------------------------------

Sorry, if I ask a stupid question but I'm more ruby then python guy:

I have installed thrift exactly as instructions on http://wiki.apache.org/cassandra/InstallThrift
said, then I run "ant gen-thrift-py" - all is fine so far, but when I try to do:

`python python contrib/py_stress/stress.py` it prints out following:

{code}
Traceback (most recent call last):
  File "contrib/py_stress/stress.py", line 36, in <module>
    from thrift.transport import TTransport
ImportError: No module named thrift.transport
{code}

Maybe you know how to fix that?

> 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: Pavel Yaskevich
>            Priority: Minor
>             Fix For: 0.7.1
>
>
> 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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