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Looking forward to 2.6.18Looking forward to 2.6.18Posted Jul 8, 2006 18:03 UTC (Sat) by afalko (subscriber, #37028)Parent article: Looking forward to 2.6.18
The CFQ scheduler set to default? Why would they do that when Anticipatory is much faster than all the rest (as for as I know)? Perhaps they want to test the new NCQ features?
I am very happy that NCQ is now supported on SATA drives. I am actually surprised that my disks have been working very fast, and I would never have even guessed that NCQ was not even supported.
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Looking forward to 2.6.18 Posted Jul 8, 2006 20:50 UTC (Sat) by rahulsundaram (subscriber, #21946) [Link]
RHEL 4 and several Fedora versions has been shipping with CFQ as a default.
The rationale is explained in
There are other distributions that have evaluating or changing the default to CFQ too.
Looking forward to 2.6.18 Posted Jul 8, 2006 22:46 UTC (Sat) by zlynx (subscriber, #2285) [Link] CFQ picked up some anticipatory features at some point.
It also has some nice things that I don't believe AS supports, such as I/O priorities. Using CFQ you can use ionice to set the priority of requests sent by particular processes. It defaults to the regular nice process priority. I/O priority is pretty cool for programs like Beagle (low priority) and multimedia players (high priority).
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