Messages in this thread | | | Date | Tue, 16 May 2006 09:31:12 -0700 | From | Valerie Henson <> | Subject | Re: [patch 00/14] remap_file_pages protection support |
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On Tue, May 16, 2006 at 03:51:35PM +0200, Andreas Mohr wrote: > > I cannot offer much other than some random confirmation that from my own > oprofiling, whatever I did (often running a load test script consisting of > launching 30 big apps at the same time), find_vma basically always showed up > very prominently in the list of vmlinux-based code (always ranking within the > top 4 or 5 kernel hotspots, such as timer interrupts, ACPI idle I/O etc.pp.). > call-tracing showed it originating from mmap syscalls etc., and AFAIR quite > some find_vma activity from oprofile itself.
This is important: Which kernel?
The cases I saw it in were in a (now old) SuSE kernel which as it turns out had old/different vma lookup code.
Thanks,
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