Re: [PATCH] 2.6 workaround for Athlon/Opteron prefetch errata

From: Jamie Lokier (jamie_at_shareable.org)
Date: 09/11/03

  • Next message: Jörn Engel: "Re: [PATCH] fix type mismatch in jffs." 
    Date:	Thu, 11 Sep 2003 17:55:15 +0100
To: richard.brunner@amd.com

    richard.brunner@amd.com wrote:
    > Don't worry! I am pretty certain the patch won't impact the
    > performance of the 2.6 kernel on processors from other vendors ;-)

    is_prefetch() will slow down programs which depend on lots of SEGV
    signals: those garbage collectors which use mprotect and SIGSEGV to
    track dirty pages.

    I wonder how much it will slow them down.

    -- Jamie
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