Date: Mon, 22 Aug 2005 13:12:22 +0200 From: Andre Oppermann <andre@freebsd.org> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: Divacky Roman <xdivac02@stud.fit.vutbr.cz>, freebsd-current@freebsd.org, Giorgos Keramidas <keramida@freebsd.org>, Kris Kennaway <kris@obsecurity.org> Subject: Re: [PATCH]: fdalloc optimization Message-ID: <4309B316.5080106@freebsd.org> In-Reply-To: <62870.1124699921@phk.freebsd.dk> References: <62870.1124699921@phk.freebsd.dk>
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Poul-Henning Kamp wrote: > In message <20050822083320.GA32668@stud.fit.vutbr.cz>, Divacky Roman writes: > > >> N Min Max Median Avg Stddev >>x 100 39957 959570 41444 87169.69 201011.84 >>+ 100 37786 962107 38766 66353.09 158258.74 >>No difference proven at 95.0% confidence >> >>anyway - commenting out duplicate code MUST speed it up, maybe insignificantly >>but still ;) > > > It used to be that life was that simple, but with three levels of caches and > deep pipelines it isn't anymore. > > But taken from the other side: you can also read this as your patch does no > damage to performance, so if code clarity is improved (havn't looked at your > patch myself) then that would be another good reason. Danfe posted about some DFBSD work in that area an hour ago. -- Andre
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