Messages in this thread |  | | Date | Tue, 25 Sep 2001 12:44:40 +0200 | From | Matthias Andree <> | Subject | Re: [PATCH] 2.4.10 improved reiserfs a lot, but could still be better |
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On Tue, 25 Sep 2001, Beau Kuiper wrote:
> I can imagine how it improves sequenial write performace too. With the > write cache off, the computer cannot send another write request to the IDE > device until the last one had finished. By the time the computer is told > the request was finished and it has sent a new request to the drive, the > disk would have spun out of the place it was supposed to be placed. The > drive will then have to wait for the disk to spin around fully again > before doing the write. With the write cache enabled, several requests can > be placed into the drive buffer and written in the single revolution of > the drive.
Might be an explanation. How big are the chunks of data that the kernel sends to the disk?
-- Matthias Andree
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