On Tue, Sep 01, 2009 at 02:00:52PM -0400, Chris Mason wrote:
>
> I haven't yet tried this without the max_writeback_pages patch, but the
> graphs clearly show a speed improvement, and that the mainline code is
> smearing writes across the drive while Jens' work is writing
> sequentially.
FYI, you don't need to revert the max_writebacks_pages patch; the
whole point of making it a tunable was to make it easier to run
benchmarks. If you want to get the effects of the original setting of
MAX_WRITEBACK_PAGES before the patch, just run as root:
sysctl vm.max_writeback_pages=1024
- Ted
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