Date: Thu, 09 Nov 2006 12:44:56 +0100 From: Ivan Voras <ivoras@fer.hr> To: Pete French <petefrench@ticketswitch.com> Cc: freebsd-stable@freebsd.org Subject: Re: Dissapointing performance of ciss RAID 0+1 ? Message-ID: <455314B8.7080104@fer.hr> In-Reply-To: <E1Gi7dQ-0000t9-VE@dilbert.firstcallgroup.co.uk> References: <E1Gi7dQ-0000t9-VE@dilbert.firstcallgroup.co.uk>
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Pete French wrote: >> - How does your performance compare when using dd on the raw devices (in >> order: da0, da0s1, da0s1a...) vs when using it on the file system? (Poor >> performance might indicate FS vs stripe alignment issues) > > Raw dd gives 50 meg/second On /dev/da1, with a reasonable block size (1m)?
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