IGL slowness after upgrading to version 7.1.1
Password Management module is offSymptoms identified:
My Server - Application and Database on same server
Thank you all for your help and suggestionThe problem was solved with the P04 patch.
Few things I would check .
We can look TOP with more details to know what is happening in “real time”
- First few lines from TOP will tell system uptime , load average ,running/stopped/sleeping/zombie processesWhether user processes or system processes that eating CPU.
- The Process/PID that eating all CPUs .While TOP is running press C in running top command, it will display absolute path of running process.
Here i can see JAVA is the one eating CPUs .I would press C to check the absolute path of running process
And is that process consistently running at an unexpectedly high level of CPU usage. I would check if its Application server has been a sluggish.
-Next , I can see here the CPU utilization is 590% , that means there are more CPUs than one( per screenshot above there are 7 CPUs)
you can press 1 in running TOP command , that will lists all available CPUs and breakdown of CPU usage.
Let's check whether all CPUs are high
-Next , this is VM (Vmware platform). I would check whether the resources (CPU) allocated to this VM is dedicated to this VM or are they shared among other VMs on vSphere.
- And is this VM in a Resources Group ?
- And logs .
Any kind of running purge logs?
It is very hard to troubleshoot performance issues on a virtual system. You absolutely cannot ignore the virtualization environment in your analysis.
JVM memory usage and CPU usage are directly related to each other. CPU is typically the actual limiting factor not memory. 19GB of JVM heap memory should be satisfactory for most systems if there is adequate CPU available to conduct JVM garbage collection. This means you can logically reduce this problem to a CPU issue.
As noted by the other poster. CPU usage statistics as reported by 'top' is only accurate in a virtual environment if this is the only host on the virtualization. Other applications competing for the CPU resources will reduce the real performance of the CPU.
Try and identify which aspect of the system is the consumer of CPU resources. Be aware that the IG&L JVM process will report high CPU usage even if it is not the consumer, but is just affected by another consumer. Most likely if this is a software appliance with a local database, Oracle is the consumer, but other possibilities exist.
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