Re: mm-more-likely-reclaim-madv_sequential-mappings.patch

[KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>]

> > > mmotm mode,
> > > 
> > > 1, shrink_inactive_list() free copy's page.
> > > 2. end!
> > 
> > OK.  But my concern is that perhaps the above latency improvement was
> > caused by one of the many other MM patches in mmotm.
> > 
> > Reverting mm-more-likely-reclaim-madv_sequential-mappings.patch from
> > mmotm and rerunning the tests would be the way to determine this. 
> > (hint :) - thanks).
> 
> fair enough.
> OK, please wait half hour.

I mesured 2.6.27+sequential-patch.

                                   (NEW)
                         2.6.27    2.6.27+patch   mmotm-1010
   ==============================================================
   mm_sync_madv_cp       6:14      6:03           6:02         (min:sec)
   dbench throughput     12.1507   13.915         14.6273      (MB/s)
   dbench latency        33046     22062          21779        (ms)


Hm, I think other patches influence isn't so much.

Thanks.


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