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    SubjectRe: [PATCH -v6 0/2] Fixing the issue with memory-mapped file times
    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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