Messages in this thread | | | From | Al Boldi <> | Subject | Re: [PATCHSET] 0/15 IO scheduler improvements | Date | Sat, 15 Jul 2006 15:35:03 +0300 |
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Jens Axboe wrote: > On Fri, Jul 14 2006, Al Boldi wrote: > > Jens Axboe wrote: > > > On Thu, Jul 13 2006, Al Boldi wrote: > > > > Jens Axboe wrote: > > > > > This is a continuation of the patches posted yesterday, I > > > > > continued to build on them. The patch series does: > > > > > > > > > > - Move the hash backmerging into the elevator core. > > > > > - Move the rbtree handling into the elevator core. > > > > > - Abstract the FIFO handling into the elevator core. > > > > > - Kill the io scheduler private requests, that require > > > > > allocation/free for each request passed through the system. > > > > > > > > > > The result is a faster elevator core (and faster IO schedulers), > > > > > with a nice net reduction of kernel text and code as well. > > > > > > > > Thanks! > > > > > > > > Your efforts are much appreciated, as the current situation is a bit > > > > awkward. > > > > > > It's a good step forward, at least. > > > > > > > > If you have time, please give this patch series a test spin just > > > > > to verify that everything still works for you. Thanks! > > > > > > > > Do you have a combo-patch against 2.6.17? > > > > > > Not really, but git let me generate one pretty easily. It has a few > > > select changes outside of the patchset as well, but should be ok. It's > > > not tested though, should work but the rbtree changes needed to be > > > done additionally. If it boots, it should work :-) > > > > patch applies ok > > compiles ok > > panics on boot at elv_rb_del > > patch -R succeeds with lot's of hunks > > So I most likely botched the rbtree conversion, sorry about that. Oh, I > think it's a silly reverted condition, can you try this one?
Thanks!
patch applies ok compiles ok boots ok patch -R succeeds with lot's of hunks
Tried it anyway, and found an improvement only in cfq, where : echo 512 > /sys/block/hda/queue/max_sectors_kb gives full speed for 5-10 sec then drops to half speed other scheds lock into half speed echo 192 > /sys/block/hda/queue/max_sectors_kb gives full speed for all scheds
Thanks!
-- Al
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