Messages in this thread |  | | Date | Thu, 3 May 2001 12:46:47 +0200 | From | Jens Axboe <> | Subject | Re: Disk Performance Measurements |
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On Thu, May 03 2001, Shaun wrote: > Again, this isn't the case in the 2.2.16 kernel I'm working with. Each > call to make_request() causes pgin/pgout to be incremented, since these > requests can be of different sizes (even for the same disk) I can't see > how a kb value can be deduced.
Check if the latest 2.2 is correct then, 2.4 is.
> Just as a question though, a disk/partition doesn't need to have a > filesystem on it, so why is the "correct_size" for a buffer request on the > block device defined based on a filesystem block system?
It's not, but the fs may set the block size (ext2 does).
-- Jens Axboe
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