Date: Mon, 18 Feb 2002 16:05:06 +0100 From: Cliff Sarginson <csfbsd@raggedclown.net> To: freebsd-stable@FreeBSD.ORG Subject: Re: Support for DAO in burncd under -STABLE?? Message-ID: <20020218150506.GB863@raggedclown.net> In-Reply-To: <20020217.172517.117915195.imp@village.org> References: <Pine.OSF.4.41.0202171505150.30544-100000@gromit.dlib.vt.edu> <20020217.172517.117915195.imp@village.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Sun, Feb 17, 2002 at 05:25:17PM -0800, M. Warner Losh wrote: > In message: <Pine.OSF.4.41.0202171505150.30544-100000@gromit.dlib.vt.edu> > Paul Mather <paul@gromit.dlib.vt.edu> writes: > : After a little more research, I found that DAO is supported in burncd > : under 5.0-CURRENT. However, after briefly installing FreeBSD from the > : 5.0-20020214-CURRENT snapshot, I reverted back to 4.5-RELEASE because my > : I/O performance under -CURRENT appeared to be about 1/3rd of that under > : 4.5-RELEASE (measured by install and dump progress). (Did I pick a bad > : snapshot to install??) > > Likely you had a kernel that had WITNESS enabled. That's a huge > performance killer. However, we're at the worst part of the lock > pushdown right now, so there's about a 15-20% performance hit > (measured by make buildworld, aka the "worldstone"). Things should be > getting better from this point forward... > Oh, that explains it (although I don't know what WITNESS is), I rebuilt CURRENT yesterday, in the time it took I translated Lord of the Rings into mediaeval Church Latin. -- Regards Cliff Sarginson -- <csfbsd@raggedclown.net> To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?20020218150506.GB863>