Messages in this thread | | | Date | Sun, 29 May 2005 20:10:52 +0200 | Subject | Re: Playing with SATA NCQ | From | Michael Thonke <> |
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Jens Axboe schrieb:
>There's really nothing to be tuned. If NCQ is enabled for your drive, it >will be printed in dmesg after the lba48 flag, such as: > >ata1: dev 0 ATA, max UDMA/133, 488281250 sectors lba48 ncq > >If you don't see NCQ there, your drive/controller doesn't support it. >Likewise you will have a queueing depth of > 1 if NCQ is enabled, check >/sys/block/sdX/device/queue_depth to see what the configured queueing >depth is for that device. > > > Hello again,
the queue_depth of 30 is okay? On boot the CFQ scheduler tells:
cfq: depth 4 reached, tagging now on
This only appears with AHCI enabled what does that mean?
Also a question which options can be set in queue_type?
Best regard and thanks for help
Greets Michael
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