Messages in this thread | | | Date | Thu, 11 May 2006 13:42:47 -0700 | From | Martin Bligh <> | Subject | Re: [PATCH 0/10] bulk cpu removal support |
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Ashok Raj wrote: > On Thu, May 11, 2006 at 10:02:15AM -0700, Andrew Morton wrote: > >>OK, thanks. I'm a little surprised that this patch wasn't accompanied by a >>problem description, really. I mean, if a single CPU offlining takes three >>milliseconds then why bother? > > > It depends on whats running at the time... with some light load, i measured > wall clock time, i remember seeing 2 secs at times, but its been a long time > i did that.. so take that with a pinch :-)_ > > i will try to get those idle and load times worked out again... the best > i have is a 16 way, if i get help from big system oems i will send the > numbers out
Why is taking 30s to offline CPUs a problem?
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