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From "Benjamin Reed (JIRA)" <j...@apache.org>
Subject [jira] Updated: (ZOOKEEPER-308) improve the atomic broadcast performance 3x
Date Tue, 10 Feb 2009 06:48:59 GMT

     [ https://issues.apache.org/jira/browse/ZOOKEEPER-308?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel

Benjamin Reed updated ZOOKEEPER-308:

    Attachment: ZOOKEEPER-308.patch

This patch adds the AtomicBroadcastBenchmark to show the throughput of just the atomic broadcast
layer. It also has the following performance improvements: use a hashtable rather than list
for outstanding requests, only flush the txnlog buffer we we absolutely have to, only flush
to buffer for the tcp stream on the leader when there aren't pending requests

> improve the atomic broadcast performance 3x
> -------------------------------------------
>                 Key: ZOOKEEPER-308
>                 URL: https://issues.apache.org/jira/browse/ZOOKEEPER-308
>             Project: Zookeeper
>          Issue Type: Improvement
>          Components: server
>            Reporter: Benjamin Reed
>         Attachments: ZOOKEEPER-308.patch
> We need a benchmark for zab, the atomic broadcast protocol of zookeeper. we can also
do some small tweaks to make zab go much faster.

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