| To: | Ulf Carlsson <ulfc@xxxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | RE: Kernel profiles from MIPS64 |
| From: | Dimitris Michailidis <dimitris@xxxxxxxxxxxxxxxxxxxx> |
| Date: | Fri, 21 Jul 2000 13:48:33 -0700 (PDT) |
| Cc: | skunx@xxxxxxxxxxxxxxxxxxxx, linux-origin@xxxxxxxxxxx |
| In-reply-to: | <14707.59390.144205.450968@calypso.engr.sgi.com> |
| Organization: | SGI |
| Sender: | owner-linux-origin@xxxxxxxxxxx |
On 18-Jul-2000 Ulf Carlsson wrote: > I tried to do profiling on a 32 CPU machine as well, but the machine > wouldn't let me finish the compiles before it crashed. Anyway, the > graphs generated are rather interesting. Almost 50% of the CPU time > is in cpu_idle from the compiles on a Origin 2000. This looks like a > bug caused that may be caused by the recent generic changes in the > priority handling. This is in line with the 421% CPU utilization reported by time. Are you sure that kernel builds are parallel enough to keep all 8 CPUs busy? Otherwise you'll have idle CPUs giving you a lot of idle time. -- Dimitris Michailidis dimitris@xxxxxxxxxxxx |
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