[jboss-user] [Performance Tuning] - High CPU Utilization

[Amol Walanj]

Amol Walanj [https://community.jboss.org/people/walanj.amol] created the discussion

"High CPU Utilization"

To view the discussion, visit: https://community.jboss.org/message/734192#734192

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Hi ,

We have started our application with following settings.
$JAVA_OPTS -Xmx4096m -Xms4096m -Xmn2g -Xss128k -XX:ParallelGCThreads=8 -XX:+UseConcMarkSweepGC -XX:+UseParNewGC -XX:SurvivorRatio=8 -XX:TargetSurvivorRatio=90 -XX:MaxTenuringThreshold=31 -XX:MaxPermSize=512m -XX:PermSize=256m

We are sending the direct http requst to our application.
It causing the CPU Utilization in the range of *80-85 %.*

When we tried jst returning back from the Method with Null response Our CPU Utilization is in the range of 45-50%

We are using the axis2 webservice in it.


|  %1,3% *Hardware Configuration* |
|  %4% Application Node  | *No of CPU* | *8* |
| CPU Type | Intel(R) Xeon(R) CPU E5530 @ 2.40GHz, cache size 8192 KB |
| *Memory* | *8 GB* |
| Network Card | 100 mbps Ethernet |
|  %4% Database server | No of CPU | 8 |
| CPU Type | Intel(R) Xeon(R) CPU E5620 @ 2.40GHz, cache size 12228 KB |
| Memory | 160 GB |
| Network Card | 100 mbps Ethernet |

So currently we are struggling to reduce the CPU usage.
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