Messages in this thread | | | Date | Fri, 13 Feb 2004 01:57:57 +0000 | From | Jamie Lokier <> | Subject | Re: ext2/3 performance regression in 2.6 vs 2.4 for small interl |
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Helge Hafting wrote: > Something similiar could be done for io niceness. If we run out of > normal priority io, how about not issuing the low priority io > right away. Anticipate there will be more high-priority io > and wait for some idle time before letting low-priority > requests through. And of course some maximum wait to prevent > total starvation.
The problem is quite similar to scheduling for quality on a network device. Once a packet has started going it, usually you cannot abort the packet for a higher priority one.
I thought there was a CBQ I/O scheduling patch or such to offer some kind of I/O niceness these days?
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