[Archive-access-discuss] very slow Tomcat 7

[Matjaž K. <Mat...@nu...>]

Hi everyone,


I'll go straight to the problem:

We have (on VMware) a server (Quad-core AMD Opteron, 2.4Ghz, (4 processors), 20GB RAM, Windows server 2008 R2, 64 bit)
Apache Tomcat 7.0.23 and aplications Web Curator Tool and 2 instances of Wayback machine (version 1.6 and 1.6.1)
Apache Tomcat 6 - for Solr Lucine - full text search

Tomcat 7 has 9GB Ram, Tomcat 6 has 5Gb.
I tried with several initial and maximum memory pool in tomcat (from 6GB max to 13Gb max) but it is pretty much the same after an hour or so.
Last few days Wayback reindexed data (89GB, 28.000 files in sub directories) and I had to stop all other applications for a few days, because the process (create index for 27.000 files took almost 3 days)

So, the problem we have is very, very slow Tomcat. We prectically get timeout every time using WCT. It takes a whole minute to get welcome screen.Wayback is also very very slow.  Now, wher Tomcat (7 and 6) got 13.5 gb together, windows consuption of RAM is approx 15GB.

Java opts is:
-Dcom.sun.management.jmxremote -Dcom.sun.management.jmxremote.port=9004 -Dcom.sun.management.jmxremote.ssl=false -Dcom.sun.management.jmxremote.authenticate=false -Xms768m -Xmx13000m

JVM version is 1.6.0_21-b07
I just tried with disabling Paging file, we'll see the difference..

I have a jsp script which shows the consumption of Java - here is a static html file: http://www.nuk.uni-lj.si/java.htm

My question is - is this normal? Am I doing something wrong or do I really need more than 20GB of RAM to run Wayback machine and WCT on the same machine.

If anyone has an idea - please share it with me.
If anyone needs more data to understand the situation - here I am..



Best wishes,
Matjaž