Messages in this thread | | | Date | Fri, 13 Feb 2004 15:44:13 +0100 (MET) | From | "Daniel Blueman" <> | Subject | Re: File system performance, hardware performance, ext3, 3ware RAID1, etc. |
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It is a small loss that the TCQ-support implementation hasn't been stable on linux so far. I guess mostly due to the great I/O scheduling Linux has (ie anticipatory scheduler).
Yes, a growing number of IDE disk manufacturers are using native S-ATA controllers in their disks, and TCQ is one of the core features (ie unique selling point), as well as being implemented on the more lavish P-ATA controllers.
It's just a shame that there are still issues saturating a bunch of IDE disks with software RAID in the 2.6 series, but I guess that'll be ironed out in time...
> Daniel Blueman wrote: > > many modern IDE disks and > > controllers also have tagged command queuing, so it is even more of a > corner case. > > Linux doesn't use tagged command queueing, though - the code has been > disabled for some time. I thought the TCQ stuff was disabled because > only very few disks supported it and the code wasn't reliable. > > Yet you say many modern disks support it? > > -- Jamie >
-- Daniel J Blueman
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