Date: Mon, 16 Apr 2007 18:17:12 +0100 From: Thomas Sparrevohn <Thomas.Sparrevohn@btinternet.com> To: freebsd-current@freebsd.org Subject: Re: Some comments on ZFS Message-ID: <200704161817.12442.Thomas.Sparrevohn@btinternet.com> In-Reply-To: <200704161028.l3GASo1W010585@peedub.jennejohn.org> References: <200704161028.l3GASo1W010585@peedub.jennejohn.org>
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On Monday 16 April 2007 11:28:50 Gary Jennejohn wrote: > > Is there any ZFS setting analogous to async which I could use to speed up > transfers? My system shows significant worse performance with ZFS - I suspect that this is because the devices are part of a ATAPI-RAID 0 already but here is the story - A UFS + Softupdates - make -j 4 buildworld - app. 24 Min (Debugging kernel) ZFS same command but with usr/obj on ZFS make -j 4 buildworld - app. 1h12m The weird thing is that one sees some fantastic peak transfer numbers e.g. up to 112MB/s - Compression is off
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