Messages in this thread | | | Date | Wed, 4 Mar 1998 22:00:31 +0100 (MET) | From | Rik van Riel <> | Subject | Re: Patch for block write clustering |
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On Wed, 4 Mar 1998, Gadi Oxman wrote:
> I think that Linux never used a systemwide request queue. We have a shared > systemwide "free requests" pool, but each major has its own request queue. > > All block devices are using the code in drivers/block/ll_rw_blk.c to > sort their request queue. The code supports several queues per major > by the function get_queue(), which accepts a kdev_t and returns a pointer > to the head of the queue. Usually, a single queue is returned for each > major.
So what should we do to improve request sorting? Where should we start?
Rik. +-----------------------------+------------------------------+ | For Linux mm-patches, go to | "I'm busy managing memory.." | | my homepage (via LinuxHQ). | H.H.vanRiel@fys.ruu.nl | | ...submissions welcome... | http://www.fys.ruu.nl/~riel/ | +-----------------------------+------------------------------+
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