Messages in this thread | | | From | schwidefsky@de ... | Date | Tue, 10 Apr 2001 09:27:00 +0200 | Subject | Re: No 100 HZ timer ! |
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>Just how would you do kernel/user CPU time accounting then ? It's currently done >on every timer tick, and doing it less often would make it useless. This part is architecture dependent. For S/390 I choose to do a "STCK" on every system entry/exit. Dunno if this can be done on other architectures too, on S/390 this is reasonably cheap (one STCK costs 15 cycles). That means the kernel/user CPU time accounting is MUCH better now.
blue skies, Martin
Linux/390 Design & Development, IBM Deutschland Entwicklung GmbH Schönaicherstr. 220, D-71032 Böblingen, Telefon: 49 - (0)7031 - 16-2247 E-Mail: schwidefsky@de.ibm.com
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