Messages in this thread | | | Date | Tue, 31 Mar 2009 16:10:38 +0200 | Subject | Re: Page Cache writeback too slow, SSD/noop scheduler/ext2 | From | Jos Houtman <> |
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>> There another question I have: does the writeback go through the io >> scheduler? Because no matter the io scheduler or the tuning done, the >> writeback algorithm totally starves the reads. > > I noticed this annoying writes-starve-reads problem too. I'll look into it.
Thanks
> >> Is there anything I can do about this behaviour by creating a better >> interleaving of the reads and writes? > > I guess it should be handled in the generic block io layer. Once we > solved the writes-starve-reads problem, the bursty-writeback behavior > becomes a no-problem for SSD.
Yeah this was the part where I figured the io-schedulers kicked in, but obviously I was wrong :P.
If I can do anything more to help this along, let me know.
Thanks
Jos
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