Messages in this thread | | | From | KOSAKI Motohiro <> | Subject | Re: [Patch] mm tracepoints update | Date | Wed, 22 Apr 2009 10:00:30 +0900 (JST) |
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> > I've cleaned up the mm tracepoints to track page allocation and > freeing, various types of pagefaults and unmaps, and critical page > reclamation routines. This is useful for debugging memory allocation > issues and system performance problems under heavy memory loads.
In past thread, Andrew pointed out bare page tracer isn't useful. Can you make good consumer?
> > > ---------------------------------------------------------------------- > > > # tracer: mm > # > # TASK-PID CPU# TIMESTAMP FUNCTION > # | | | | | > pdflush-624 [004] 184.293169: wb_kupdate: > mm_pdflush_kupdate count=3e48 > pdflush-624 [004] 184.293439: get_page_from_freelist: > mm_page_allocation pfn=447c27 zone_free=1940910 > events/6-33 [006] 184.962879: free_hot_cold_page: > mm_page_free pfn=44bba9 > irqbalance-8313 [001] 188.042951: unmap_vmas: > mm_anon_userfree mm=ffff88044a7300c0 address=7f9a2eb70000 pfn=24c29a > cat-9122 [005] 191.141173: filemap_fault: > mm_filemap_fault primary fault: mm=ffff88024c9d8f40 address=3cea2dd000 > pfn=44d68e > cat-9122 [001] 191.143036: handle_mm_fault: > mm_anon_fault mm=ffff88024c8beb40 address=7fffbde99f94 pfn=24ce22 > ------------------------------------------------------------------------- > > Signed-off-by: Larry Woodman <lwoodman@redhat.com> > Acked-by: Rik van Riel <riel@redhat.com> > > > The patch applies to ingo's latest tip tree:
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