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Add link to Lars's graphs in hbase-7008 where he plays w/ nagles and different data sizes 

git-svn-id: https://svn.apache.org/repos/asf/hbase/trunk@1402399 13f79535-47bb-0310-9956-ffa450edef68
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Michael Stack 2012-10-26 05:40:00 +00:00
parent 4ecc39db33
commit 5df23efc39
1 changed files with 3 additions and 1 deletions
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src/docbkx/configuration.xml
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@ -1126,7 +1126,9 @@ of all regions.
<para>If a big 40ms or so occasional delay is seen in operations against HBase, <para>If a big 40ms or so occasional delay is seen in operations against HBase,
try the Nagles' setting. For example, see the user mailing list thread, try the Nagles' setting. For example, see the user mailing list thread,
<link xlink:href="http://search-hadoop.com/m/pduLg2fydtE/Inconsistent+scan+performance+with+caching+set+&amp;subj=Re+Inconsistent+scan+performance+with+caching+set+to+1">Inconsistent scan performance with caching set to 1</link> <link xlink:href="http://search-hadoop.com/m/pduLg2fydtE/Inconsistent+scan+performance+with+caching+set+&amp;subj=Re+Inconsistent+scan+performance+with+caching+set+to+1">Inconsistent scan performance with caching set to 1</link>
and the issue cited therein where setting notcpdelay improved scan speeds.</para> and the issue cited therein where setting notcpdelay improved scan speeds. You might also
see the graphs on the tail of <link xlink:href="https://issues.apache.org/jira/browse/HBASE-7008">HBASE-7008 Set scanner caching to a better default</link>
where our Lars Hofhansl tries various data sizes w/ Nagle's on and off measuring the effect.</para>
</section> </section>
</section> </section>