Messages in this thread |  | | | Date | Fri, 18 Jan 2008 13:31:29 +0300 | | From | "Anton Salikhmetov" <> | | Subject | Re: [PATCH -v6 0/2] Fixing the issue with memory-mapped file times |
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2008/1/18, Miklos Szeredi <miklos@szeredi.hu>: > > 4. Performance test was done using the program available from the > > following link: > > > > http://bugzilla.kernel.org/attachment.cgi?id=14493 > > > > Result: the impact of the changes was negligible for files of a few > > hundred megabytes. > > Could you also test with ext4 and post some numbers? Afaik, ext4 uses > nanosecond timestamps, so the time updating code would be exercised > more during the page faults. > > What about performance impact on msync(MS_ASYNC)? Could you please do > some measurment of that as well?
I'll do the measurements for the MS_ASYNC case and for the Ext4 filesystem.
> > Thanks, > Miklos > >
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