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From: Allan McAleavy <allan.mcaleavy@gmail.com>
To: linux-mm@kvack.org
Subject: Page Cache Monitoring ( Hit/Miss )
Date: Thu, 10 Dec 2015 09:42:59 +0000	[thread overview]
Message-ID: <CAF6XsOeYWvuNm=uuMCM4YD4a2dCoBe6TvimygPKRe4PMiHwQmw@mail.gmail.com> (raw)

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Hi Folks,

I am working on a rewrite of Brendan Greggs original cachestat (ftrace)
script into bcc. What I was looking for was a steer in the right direction
for what functions to trace. At present I trace the following.

add_to_page_cache_lru
account_page_dirtied
mark_page_accessed
mark_buffer_dirty

Where total = (mark_page_accessed - mark_buffer_dirty) & misses =
(add_to_page_cache_lru - account_page_dirtied), from this I then work out
the hit ratio etc. Is there any other key functions I should be tracing?

Thanks

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             reply	other threads:[~2015-12-10  9:43 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-12-10  9:42 Allan McAleavy [this message]
2015-12-11 15:22 ` Page Cache Monitoring ( Hit/Miss ) Allan McAleavy

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