Messages in this thread | | | Date | Sun, 26 Jan 2003 17:21:20 +0100 | From | Jens Axboe <> | Subject | Re: ATA TCQ problems in 2.5.59 |
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On Sun, Jan 26 2003, Mark Hahn wrote: > > I'm trying to turn on TCQ on 2.5.59, but it doesn't seem be able to set it to > > anything but 0 and 1. This is with TCQ default 'off': > > > > # cat /proc/ide/hda/settings | grep using_tcq > > using_tcq 0 0 32 rw > > # echo using_tcq:32 > /proc/ide/hda/settings > > # cat /proc/ide/hda/settings | grep using_tcq > > using_tcq 1 0 32 rw > > but it's a flag, not a count. use CONFIG_BLK_DEV_IDE_TCQ_DEPTH > if you want something other than the default depth of 1.
It's a flag, correct. The default depth is 32 though, not 1. And with newer hdparms you can use -Q to set/query the tag depth of the drive. Be careful with that though, it's not too well tested. IDE TCQ in 2.5 needs a bit of work, I hope to do so soonish...
-- Jens Axboe
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