Messages in this thread | | | Date | Tue, 14 Jul 2009 12:53:34 +0900 | From | KAMEZAWA Hiroyuki <> | Subject | Re: [PATCH 3/3] Quick vmalloc vs kmalloc fix to the case where array size is too large |
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On Mon, 13 Jul 2009 20:50:33 -0700 Paul Menage <menage@google.com> wrote:
> On Mon, Jul 13, 2009 at 4:49 PM, KAMEZAWA > Hiroyuki<kamezawa.hiroyu@jp.fujitsu.com> wrote: > > IIUC, this place, .../procs interface is not so important for performance > > as to being allowed this ugly conding. > > > > It's not just the calling thread that suffers from the overhead - > we've seen performance hits on other processes on a machine due to the > TLB-shootdown overhead associated with vmalloc()/vfree(). > Hmm, ok...then, if too much pids, you hit vmalloc()/vfree() problem again. So, it's not good idea to use vmalloc/vfree here after all.
Thanks, -Kame
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