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From "Brandon Williams (JIRA)" <j...@apache.org>
Subject [jira] Commented: (CASSANDRA-1453) stress.java
Date Fri, 24 Dec 2010 00:17:46 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-1453?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12974801#action_12974801
] 

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

{noformat}

# contrib/stress/bin/stress -o insert -n 1000 -d cassandra-1,cassandra-2,cassandra-3 -i 1

Keyspace already exists.
total,interval_op_rate,interval_key_rate,avg_latency,elapsed_time
1000,1000,1000,0.007927,0
root@brandondev:/srv/cassandra# contrib/stress/bin/stress -o read -n 1000 -d cassandra-1,cassandra-2,cassandra-3
-i 1 
total,interval_op_rate,interval_key_rate,avg_latency,elapsed_time
Key [B@687b6889 not found.
Key [B@96fa474 not found.
Key [B@64482923 not found.
Key [B@3d84ec44 not found.
Key [B@61b383e9 not found.
Key [B@5099681b not found.
Key [B@781edf4 not found.
Key [B@fee4648 not found.
Key [B@2c2f1921 not found.
Key [B@10c832d2 not found.
Key [B@47808199 not found.
Key [B@5ca46701 not found.
Key [B@95c083 not found.
Key [B@2d66a22b not found.
Key [B@182d9c06 not found.
Key [B@5a5e5a50 not found.
Key [B@95c083 not found.
Key [B@632d3205 not found.
Key [B@1fff7a1e not found.
Key [B@7a763f5d not found.
Key [B@6b86768e not found.
Key [B@394a8cd1 not found.
Key [B@21551f60 not found.
Key [B@4447393f not found.
Key [B@790bc49d not found.
Key [B@35ab28fe not found.
Key [B@59c9b9ca not found.
Key [B@33bfc93a not found.
Key [B@86e293a not found.
Key [B@7854a328 not found.
Key [B@7ca3d4cf not found.
Key [B@59e152c5 not found.
Key [B@5220be79 not found.
Key [B@7e0c2ff5 not found.
Key [B@2d20cc56 not found.
Key [B@45bc887b not found.
Key [B@5b6df84b not found.
Key [B@481adc30 not found.
Key [B@67e8a1f6 not found.
Key [B@74341960 not found.
Key [B@78ce5b1c not found.
Key [B@78105738 not found.
Key [B@4ac4aad3 not found.
Key [B@73995d80 not found.
Key [B@68e0b6f5 not found.
Key [B@5b7ee8b8 not found.
Key [B@693a317a not found.
Key [B@4d630ab9 not found.
Key [B@48d19bc8 not found.
Key [B@3daa57fb not found.
0,0,0,NaN,0
root@brandondev:/srv/cassandra# python contrib/py_stress/stress.py -o read -n 1000 -d cassandra-1,cassandra-2,cassandra-3
-i 1 
total,interval_op_rate,interval_key_rate,avg_latency,elapsed_time
1000,1000,1000,0.00128591537476,0
{noformat}

> 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
>
>         Attachments: stress-v2.patch, 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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