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https://issues.apache.org/jira/browse/CASSANDRA-6553?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13926269#comment-13926269
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Russ Hatch commented on CASSANDRA-6553:
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[~iamaleksey] Sorry for the delay. This is a high priority for me this week, so
I hope to have some more progress soon. Took me a while to figure out how to
accomplish this with the new stress tool. Below I've included the stress
comparisons I plan to do.
{noformat}
Counter write performance
rf>1 and cl.one; rf>1 and cl.quorum
contention incrementing counters in different partitions:
# two counters, each with a different partition
./bin/cassandra-stress counterwrite n=10000 -key populate=1..2 -col
n=FIXED\(1\)
contention incrementing same counter (same partition and cell):
# contention over one counter
./bin/cassandra-stress counterwrite n=1000000 -key dist=FIXED\(1\) -col
n=FIXED\(1\)
contention incrementing one partition with two cells:
# two counters in same partition
./bin/cassandra-stress counterwrite n=1000000 -key dist=FIXED\(1\) -col
n=FIXED\(1\) -col n=FIXED\(2\)
contention incrementing counters in a few cells in the same few partitions
(hot counter partition):
# three partitions with three cells (9 counters)
./bin/cassandra-stress counterwrite n=1000000 -key populate=1..3 -col
n=FIXED\(1\) -col n=FIXED\(2\) -col n=FIXED\(3\)
{noformat}
> 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
>
>
> 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.
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