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* [PATCH 0/3] reduce readahead overheads on tmpfs mmap page faults
@ 2011-04-26  9:43 Wu Fengguang
  0 siblings, 0 replies; 2+ messages in thread
From: Wu Fengguang @ 2011-04-26  9:43 UTC (permalink / raw)
  To: Andrew Morton, Andi Kleen
  Cc: Tim Chen, Li Shaohua, Wu Fengguang, LKML, Linux Memory Management List

Andrew,

This kills unnessesary ra->mmap_miss and ra->prev_pos updates on every page
fault when the readahead is disabled.

They fix the cache line bouncing problem in the mosbench exim benchmark, which
does multi-threaded page faults on shared struct file on tmpfs.

Thanks,
Fengguang

^ permalink raw reply	[flat|nested] 2+ messages in thread
* [PATCH 0/3] reduce readahead overheads on tmpfs mmap page faults
@ 2011-04-26  9:43 Wu Fengguang
  0 siblings, 0 replies; 2+ messages in thread
From: Wu Fengguang @ 2011-04-26  9:43 UTC (permalink / raw)
  To: Andrew Morton, Andi Kleen
  Cc: Tim Chen, Li Shaohua, Wu Fengguang, LKML, Linux Memory Management List

Andrew,

This kills unnessesary ra->mmap_miss and ra->prev_pos updates on every page
fault when the readahead is disabled.

They fix the cache line bouncing problem in the mosbench exim benchmark, which
does multi-threaded page faults on shared struct file on tmpfs.

Thanks,
Fengguang

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^ permalink raw reply	[flat|nested] 2+ messages in thread
end of thread, other threads:[~2011-04-26  9:51 UTC | newest]

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2011-04-26  9:43 [PATCH 0/3] reduce readahead overheads on tmpfs mmap page faults Wu Fengguang
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