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Hi got below messages from oracle enterprise manager
how to check/solve what is causing this issue.
Code:
Target Name=EnterpriseManager0.server_name.com
Target type=Oracle Application Server
Host=server_name.com
Occurred At=<Date and Time here>
Message=CPU Utilization is 100%
Metric=CPU Usage (%)
Metric value=100
Severity=Critical
Acknowledged=No
Notification Rule Name=Application Server Availability and Critical States
Notification Rule Owner=SYSMAN
1. It is RHEL5 machine.
2. It is up from quite a long. (134 days)
3. Are you running VMware on this machine? Because it appears that you are.
4. If you are running VMware on this machine then how many guests are configured?
5. Does Oracle application manager is configured to generate alerts related to this machine? Just asking it is not a reason for high utilization though.
6. Was there a sudden hike in the CPU utilization or it slowly and gradually reached there?
7. Any changes made to the system?
Yes this is a VM of RHEL5 and oracle manager was configured to send alerts (like the one i posted).
How can i check if there was a sudden hike in CPU utilization ? and there was no chages/updates on ths VM.
PS: i also have a query on understanding %cpu column in top commands output. If it shows 1.0, what does it mean. Does it mean 100% cpu utilized ?
How can i check if there was a sudden hike in CPU utilization ? and there was no chages/updates on ths VM.
You cannot tell until and unless you have script running that keep a tab of CPU usage pattern.
Quote:
PS: i also have a query on understanding %cpu column in top commands output. If it shows 1.0, what does it mean. Does it mean 100% cpu utilized ?
Nope. That means that CPU utilization is 1%.
It might be possible that CPU might have hit 100% for a moment and then came down to normal utilization. This cannot be considered as high utilization because some processess sometime for a fraction of second causes CPU to spike upto 100.
If I am not wrong your alerting system throws an alert immediately it see that CPU pegged at 100% without even bothering for how long it was there at 100%.
For me high utilization is a situation wherein CPU is stuck at a particular percentage. Doesn't matter if it is 60% because then I know that there is some processes which is continuoulsy using 60% of my CPU.
I am new to the linux. I have a problem, CPU usage over 90% and my pc runs very slow. I use Ubuntu 8.04.
Please help me to resolve this problem...
Thanks,
Tristan
You will probably want to start a new thread to get the proper assistance that you require. Unless you are using server version your release may be unsupported https://wiki.ubuntu.com/Releases
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