Date: Mon, 28 Jan 2002 18:34:10 +0100 From: Bernd Walter <ticso@cicely8.cicely.de> To: Jason Andresen <jandrese@mitre.org> Cc: freebsd-hackers@FreeBSD.ORG Subject: Re: vinum write spanning Message-ID: <20020128183409.D95936@cicely8.cicely.de> In-Reply-To: <3C556517.CED19C80@mitre.org> References: <3C556517.CED19C80@mitre.org>
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On Mon, Jan 28, 2002 at 09:49:59AM -0500, Jason Andresen wrote: > I'm hoping there is an easy answer to this one... > > Is there some way vinum can be tickled such that it writes to all disks > in a plex at once? For instance, say I have a 6 disk RAID5 array > that I'm writing a 200MB file to. Is there some way I can make > vinum attempt to write data to all of the drive simultaniously? You can't easily increase performance in a single file access case with more disks. Especialy in the R5 case where you have several blocks depend on the same parity. > If vinum already does that I'm probably just saturating the PCI bus > and there's nothing more I can do, but it seems like I should have > a tougher time saturating the bus with 5400RPM drives... Vinum is designed for multiple file access which is a more common situation for a unix system. -- B.Walter COSMO-Project http://www.cosmo-project.de ticso@cicely.de Usergroup info@cosmo-project.de To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-hackers" in the body of the message
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