cassandra-commits mailing list archives

Site index · List index
Message view « Date » · « Thread »
Top « Date » · « Thread »
From "Aleksey Yeschenko (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (CASSANDRA-6553) Benchmark counter improvements (counters++)
Date Wed, 26 Mar 2014 03:53:17 GMT

    [ https://issues.apache.org/jira/browse/CASSANDRA-6553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13947522#comment-13947522
] 

Aleksey Yeschenko commented on CASSANDRA-6553:
----------------------------------------------

[~benedict] http://riptano.github.io/cassandra_performance/graph/graph.html?stats=6553.read_write.uber_contention_CL_one.json&metric=op_rate&operation=read&smoothing=1&xmin=0&xmax=91.85&ymin=0&ymax=35426.6
these are non-counter reads. Is stress whack, or do you have any ideas on what's causing the
regression?

> Benchmark counter improvements (counters++)
> -------------------------------------------
>
>                 Key: CASSANDRA-6553
>                 URL: https://issues.apache.org/jira/browse/CASSANDRA-6553
>             Project: Cassandra
>          Issue Type: Test
>            Reporter: Ryan McGuire
>            Assignee: Russ Hatch
>             Fix For: 2.1 beta2
>
>         Attachments: 6553.uber.quorum.bdplab.read.png, 6553.uber.quorum.bdplab.write.png,
high_cl_one.png, high_cl_quorum.png, low_cl_one.png, low_cl_quorum.png, tracing.txt, uber_cl_one.png,
uber_cl_quorum.png
>
>
> Benchmark the difference in performance between CASSANDRA-6504 and trunk.
> * Updating totally unrelated counters (different partitions)
> * Updating the same counters a lot (same cells in the same partition)
> * Different cells in the same few partitions (hot counter partition)
> benchmark: https://github.com/apache/cassandra/tree/1218bcacba7edefaf56cf8440d0aea5794c89a1e
(old counters)
> compared to: https://github.com/apache/cassandra/tree/714c423360c36da2a2b365efaf9c5c4f623ed133
(new counters)
> So far, the above changes should only affect the write path.



--
This message was sent by Atlassian JIRA
(v6.2#6252)

Mime
View raw message