Messages in this thread | | | Date | Wed, 2 Mar 2011 08:24:12 -0800 | From | Randy Dunlap <> | Subject | Re: [RFC PATCH 1/5] x86/Kconfig: Add Page Cache Accounting entry |
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On Wed, 2 Mar 2011 16:38:06 +0800 Liu Yuan wrote:
> From: Liu Yuan <tailai.ly@taobao.com> > > Signed-off-by: Liu Yuan <tailai.ly@taobao.com> > --- > arch/x86/Kconfig.debug | 9 +++++++++ > 1 files changed, 9 insertions(+), 0 deletions(-) > > diff --git a/arch/x86/Kconfig.debug b/arch/x86/Kconfig.debug > index 615e188..f29e32d 100644 > --- a/arch/x86/Kconfig.debug > +++ b/arch/x86/Kconfig.debug > @@ -304,4 +304,13 @@ config DEBUG_STRICT_USER_COPY_CHECKS > > If unsure, or if you run an older (pre 4.4) gcc, say N. > > +config PAGE_CACHE_ACCT > + bool "Page cache accounting" > + ---help--- > + Enabling this options to account for page cache hit/missed number of > + times. This would allow user space applications get better knowledge > + of underlying page cache system by reading virtual file. The statitics > + per partition are collected. > + > + If unsure, say N. > endmenu > --
rewrite:
Enable this option to provide for page cache hit/miss counters. This allows userspace applications to obtain better knowledge of the underlying page cache subsystem by reading a virtual file. Statistics are collect per partition.
questions: what virtual file? what kind of partition?
--- ~Randy *** Remember to use Documentation/SubmitChecklist when testing your code ***
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