question about top
Nathaniel Hall
halln at otc.edu
Wed Sep 22 16:30:03 UTC 2004
iowait is the amount of time processes wait on the hard drives to read
or write. If you are messing with a large file and also writing at the
same time, the iowait will be higher because there is more hard drive
involvement. Obviously, the less iowait, the less wasted processor cycles.
Nathaniel Hall
Intrusion Detection and Firewall Technician
Ozarks Technical Community College -- Office of Computer Networking
halln at otc.edu
417-799-0552
Zambrano Teran, David wrote:
>Hello everyone.
>
>
>
>This is more a question than a problem; in my server it's usual to see
>this when run the top command
>
>
>
>CPU states: cpu user nice system irq softirq iowait idle
>
> total 7.6% 0.0% 7.2% 0.0% 0.0% 224.4% 159.6%
>
> cpu00 1.5% 0.0% 0.1% 0.0% 0.0% 19.4% 78.8%
>
> cpu01 1.5% 0.0% 2.1% 0.0% 0.1% 94.7% 1.3%
>
> cpu02 1.3% 0.0% 0.7% 0.0% 0.0% 19.9% 77.8%
>
> cpu03 3.1% 0.0% 4.3% 0.0% 0.1% 90.7% 1.5%
>
>
>
>As you can see, about the half of the processing capacity is on IOWAIT,
>being a recently windows to linux converted, I don't know what this
>means, could anybody explain me?
>
>
>
>Advance server 3.0 update 3 with 1 GB RAM and 2 Pentium Xeon 3 ghz, Raid
>5.
>
>
>
>Thanks in advance,
>
>David
>
>
>
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