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Top Forums UNIX for Advanced & Expert Users Performance diagnosis & tuning Post 302342540 by ash.abrol on Monday 10th of August 2009 07:13:28 AM
Old 08-10-2009
Performance diagnosis & tuning

Hi,

I am facing a strange issue. Application is deployed in a cluster with 2 Unix nodes (with same configuration). On one node the application is working fine but on another node we see this behavior I found using vmstat- when the server is not yet started everything is OK; when you start the server it is still Ok, but the moment you make the very first request the CPU usage is 90% and then it remains consistently at 90%. the moment I stop the Websphere server it CPU usage comes down back to normal.

What all can be the issue and what do I need to check to diagnose the problem


Thanks,
AB
 

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4S-BACKEND_SETUP(1J)						      4store						      4S-BACKEND_SETUP(1J)

NAME
4s-backend-setup -- Create a new 4store KB SYNOPSIS
4s-backend-setup kbname [--node node-number] [--cluster cluster-size] [--segments segment-count] kb-name --node Number of this node in the cluster, values range from 0 to cluster-size - 1. The default is 0. --cluster The number of nodes in the cluster. The default is 1. --segments The number of segments in the cluster. The default is 2. We recommend one for each CPU core in the cluster as a good starting point. Higher numbers tend to consume more resources, but may result in increased performance. NOTES
Once crated with 4s-backend-setup KBs should be started with 4s-backend(1) SEE ALSO
4s-query(1), 4s-size(1), 4s-httpd(1), 4s-backend(1), 4s-delete-model(1) EXAMPLES
$ 4s-backend-setup --node 0 --cluster 1 --segments 4 demo Creates the indexes for a single-machine KB with four segments, named "demo". 4store May 31, 2019 4store
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