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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LEARN ABOUT DEBIAN
4s-backend-setup
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