Date: Sun, 24 Feb 2002 11:47:30 +0000 (GMT) From: Mike Silbersack <silby@silby.com> To: Andrew Mobbs <andrewm@chiark.greenend.org.uk> Cc: Matthew Dillon <dillon@apollo.backplane.com>, <hackers@FreeBSD.ORG> Subject: Re: Test patch for msync/object-flushing performance (for stable) Message-ID: <20020224114508.P15264-100000@patrocles.silby.com> In-Reply-To: <15481.61.57511.222531@chiark.greenend.org.uk>
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On Sun, 24 Feb 2002, Andrew Mobbs wrote:
> vm.msync_flush_flags
> | 0 | 1 | 2 | 3 |
> -------+-------+-------+-------+-------|
> write | 519 | 517 | 1632 | 519 |
> sync | 2227 | 176 | 848 | 177 |
^^^
I don't get that one; any idea why bit 1 on for the first test performs so
differently from the other tests? Were these tests all run sequentially?
Maybe memory is becoming more fragmented as time goes on, causing that
optimization to not be able to work properly.
Mike "Silby" Silbersack
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