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SubjectRe: [Patch] mm tracepoints update
Date
> 
> 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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