Re: Odd IDE performance drop 2.4 vs 2.6?

From: Alan Cox (alan_at_lxorguk.ukuu.org.uk)
Date: 06/13/05

  • Next message: Matthew Wilcox: "Re: [Patch][RFC] fcntl: add ability to stop monitored processes" 
    To: Nick Piggin <nickpiggin@yahoo.com.au>
Date:	Mon, 13 Jun 2005 16:09:04 +0100

    On Llu, 2005-06-13 at 15:06, Nick Piggin wrote:
    > > Make sure you have pre-empt disabled and the antcipatory I/O scheduler
    > > disabled.
    > >
    > I don't think that those could explain it.

    Try it and see. The anticipatory I/O scheduler does horrible things to
    my IDE streaming performance numbers and to swap performance. It tries
    to merge I/O by delaying it which is deeply ungood when it comes to IDE
    streaming even if its good for general I/O.

    Alan

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  • Next message: Matthew Wilcox: "Re: [Patch][RFC] fcntl: add ability to stop monitored processes"

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