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From João Sávio <joaosa...@gmail.com>
Subject Re: Help with Tomcat 7 clustering using BIO receiver
Date Thu, 03 Jul 2014 16:12:03 GMT
cluster.log -> http://pastebin.com/c98WhnmG


2014-07-03 13:04 GMT-03:00 João Sávio <joaosavio@gmail.com>:

> Hello!
>
> Using NIO (with channelSendOptions="4", i.e., synchronous), with lightly
> load, my tests pass 100%. But, on heavy load, not all sessions are
> replicated on time, and I have about 20% of errors. If I increase
> maxThreads to 400, I have about 15% of errors.
>
> More information:
> * I am not performing parallel requests with same session
> * my cluster has 4 nodes (all in one machine - for test purpose only)
> * Java 7 64 bits, Tomcat 7.0.52, windows 7 64 bits
> * using default NIO configuration, but with maxThreads=400
> * VM options:
> -Xms512M   - on real environment this value is 1024
> -Xmx512M  - on real environment this value is 1024
> -XX:NewSize=450M
> -XX:MaxNewSize=450M
> -XX:PermSize=128M
> -XX:MaxPermSize=245M
> -XX:SurvivorRatio=8
> -XX:TargetSurvivorRatio=90
> -XX:MaxTenuringThreshold=15
> -XX:+UseBiasedLocking
> -XX:CMSInitiatingOccupancyFraction=60
> -XX:+UseCMSInitiatingOccupancyOnly
> -XX:+CMSClassUnloadingEnabled
> -XX:+UseConcMarkSweepGC
> -XX:+CMSIncrementalMode
> -XX:+UseParNewGC
> -XX:+DisableExplicitGC
> -XX:+PrintGCDateStamps
> -XX:+PrintGCDetails
> -Xloggc:%CATALINA_BASE%/logs/tomcat-gc.log
>
> Moreover, I'm trying to attach the logs again.
>
> Thanks
> João
>



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