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https://issues.apache.org/jira/browse/KAFKA-1994?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=14342769#comment-14342769
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Ashish K Singh commented on KAFKA-1994:
---------------------------------------
Ran quick test of creating a topic with 1000 partitions with and without
KAFKA-1664's patch. Results are averaged over 100 iterations.
W/o patch (100 iterations):
real 2m4.689s
user 1m45.213s
sys 0m6.893s
user + sys = 1121.06 ms for each topic creation
W patch (100 iterations):
real 2m4.327s
user 1m45.497s
sys 0m7.004s
user + sys = 1125.01 ms for each topic creation
Effect due to the patch is ~0.35%. Below is the simple test I ran. Let me know
if you have a better test in mind.
{code}
time for i in `seq 1 100`; do bin/kafka-topics.sh --zookeeper localhost:2181
--create --topic topic$i --partitions 2000 --replication-factor 1; done
{code}
> Evaluate performance effect of chroot check on Topic creation
> -------------------------------------------------------------
>
> Key: KAFKA-1994
> URL: https://issues.apache.org/jira/browse/KAFKA-1994
> Project: Kafka
> Issue Type: Improvement
> Reporter: Ashish K Singh
> Assignee: Ashish K Singh
>
> KAFKA-1664 adds check for chroot while creating a node in ZK. ZkPath checks
> if namespace exists before trying to create a path in ZK. This raises a
> concern that checking namespace for each path creation might be unnecessary
> and can potentially make creations expensive.
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