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Old 10-22-2007, 07:41 AM   #1
Registered: Oct 2007
Location: Val-des-Monts, Québec, Canada
Distribution: CentOS, RHEL, Fedora
Posts: 109

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Question heavy cpu usage on RHEL


I am running RHEL 4 and using as my desktop environment (KDE). This morning it started to behave poorly on CPU usage. I ran top and it displays 80-90% usage on the "%hi" column. Load is around 8-9.

What is the meaning of the %hi column and what locally could account for such usage?

Is this local disk I/O or something else?


Old 10-22-2007, 09:52 AM   #2
Registered: Jun 2007
Location: Munich, Germany
Distribution: RHEL, CentOS, Fedora, SLES (...)
Posts: 399

Rep: Reputation: 39
That is highmem.

All memory above the address of 896MB is temporarily mapped into kernel virtual memory everytime the kernel needs to access that memory.


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