10 Sep
2014
10 Sep
'14
8:53 a.m.
Yes we slept a bit lately in term of performances. This is why we
started concentrate on it and hope to restore good ones as soon as
possible, since it's an accumulation of small things I can't really
give you a single Jira issue to follow but we are working on it. I
usually label performance related issue with "performance" label, see
http://jira.xwiki.org/issues/?jql=labels%20%3D%20performance.
In the meantime did you looked at
http://platform.xwiki.org/xwiki/bin/view/AdminGuide/Performances
already ? There is some customizations to improve performances compare
to default setup there.
On Tue, Sep 9, 2014 at 10:57 PM, Gardner, Mark <mark.gardner(a)kc.frb.org> wrote:
Started with 5.0.3. The upgrade to 5.1 went
splendid, performance was fine.
But to upgrade to any version > 5.2, 5.2.2, 5.3, 5.4.5, 6.1 is very slow three times
slower to render the home page. Subsiquent visits to the page are equally slow.
I thought it might be a problem with the upgrade, but I did a clean install of 6.1 and it
is still three times slower than my 5.1 install.
ENVIRONMENT
SUSE Linux Enterprise 11 SP3 (SLES 11.3)
Java Version:
java version "1.7.0"
Java(TM) SE Runtime Environment (build pxa6470sr7fp1-20140708_01(SR7 FP1))
**IBM J9 VM (build 2.6, JRE 1.7.0 Linux amd64-64 Compressed References 20140627_204598
(JIT enabled, AOT enabled)
[notice it's IBM JAVA]
java-1_7_0-ibm-1.7.0_sr7.1-0.5.1
java-1_6_0-ibm-1.6.0_sr16.1-0.3.1
java-1_7_0-ibm-devel-1.7.0_sr7.1-0.5.1
rpm -qa | grep tomcat
tomcat6-jsp-2_1-api-6.0.41-0.43.1
tomcat6-6.0.41-0.43.1
tomcat6-lib-6.0.41-0.43.1
jakarta-commons-pool-tomcat5-1.3-1.29.2
jakarta-commons-dbcp-tomcat5-1.2.2-88.34.4
tomcat6-servlet-2_5-api-6.0.41-0.43.1
jakarta-commons-collections-tomcat5-3.2-88.34.2
Mysql
mysql-5.5.39-0.7.1
libqt4-sql-mysql-32bit-4.6.3-5.29.2
libmysqlclient15-5.0.96-0.6.13
mysql-client-5.5.39-0.7.1
mysql-connector-java-5.1.6-1.27
Tomcat Options:
CATALINA_OPTS=" -Xms800m -Xmx800m -XX:MaxPermSize=196m -Djava.awt.headless=true
-XX:+UseParallelGC -XX:MaxGCPauseMillis=100"
Also tired lowering the Xms (as recommended by IBM Java folks) but did not help
CATALINA_OPTS=" -Xms256m -Xmx800m -XX:MaxPermSize=196m -Djava.awt.headless=true
-XX:+UseParallelGC -XX:MaxGCPauseMillis=100"
The part that is most puzzling is that a fresh install of 6.1 is still sooooo much
slower.
Tomcat uses near 100% of cpu for any page read, and mysql uses 25% for any page read
The tomcat logs don't have any errors (I turned the log4j debugging up to see if I
could catch something odd)
Any Ideas. I'm fresh out.
--
Mark Gardner
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--
Thomas Mortagne