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Re: columns in top...

 
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K.C. Chan
Trusted Contributor

‎09-20-2005 02:03 PM

‎09-20-2005 02:03 PM

columns in top...

all,
I have:
Cpu(s): 7.0% us, 1.0% sy, 0.6% ni, 91.2% id, 0.2% wa, 0.1% hi, 0.0% si

I am interested in what "% hi" and "% si" mean?

Thanks.
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Alessandro Pilati
Esteemed Contributor

‎09-20-2005 08:44 PM

‎09-20-2005 08:44 PM

Solution

Re: columns in top...

Hi Chan,
here it is an explanation:

us = regular user apps
sy = system (general kernel stuff)
ni = nice user apps (low-priority tasks)
id = idle
wa = waiting for IO to complete
hi = hard interrupt (IRQ) handlers
si = soft interrupt handlers

( If you consider vmstat, it mixes ni into us, and hi and si into sy. )

Differences between hard and soft interrupts?
Check the file in attachment, and this link:

http://cs1.cs.nyu.edu/web/Research/Theses/edler_jan.pdf


Best regards,
Alessandro
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K.C. Chan
Trusted Contributor

‎09-21-2005 04:52 AM

‎09-21-2005 04:52 AM

Re: columns in top...

Thanks for your info.
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