Date: Mon, 19 Apr 2004 21:43:38 -0300 (ADT) From: "Marc G. Fournier" <scrappy@hub.org> To: Willem Jan Withagen <wjw@withagen.nl> Cc: freebsd-current@freebsd.org Subject: Re: Is -current really this slow, or do I have something mis-configured? Message-ID: <20040419214244.D780@ganymede.hub.org> In-Reply-To: <020c01c42667$8d70bf80$471b3dd4@dual> References: <20040419175924.Y971@ganymede.hub.org> <020c01c42667$8d70bf80$471b3dd4@dual>
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Stupid me, I had commented out KERNCONF in my /etc/make.conf at some point, so I've been building a GENERIC kernel without realizing it :( Just re-built a new kernel and installed, which will hopefully fix that up for tomorrow when I get back to the office *cross fingers* On Tue, 20 Apr 2004, Willem Jan Withagen wrote: > > ----- Original Message ----- > From: "Marc G. Fournier" <scrappy@hub.org> > To: <freebsd-current@freebsd.org> > Sent: Monday, April 19, 2004 11:04 PM > Subject: Is -current really this slow, or do I have something mis-configured? > > > > > > I'm running -CURRENT on my desktop ... the machine is a P4, no HTT, and > > 512Meg of RAM ... and I swear the machine is less responsive then my > > laptop running on a Celeron 333 with ~192 Meg of RAM ... both are IDE > > drives, both are runing X and both are -current ... > > If you are running -CURRENT with WITNESS and all other assert stuff then > there could be a serious "penalty" you pay. And there is a good reason for it: > > Nota Bene: > Turn off WITNESS and INVARIANTS only > when benchmarking or for production systems > Robert Watson writes: "We turn them off in releases, > and once 5.x becomes 5-stable, we'll turn it off by default also. However, > they're invaluable tools when debugging the development system, so we have > them on in the development branch by default. I would encourage people to > generally run with them turned on unless performance of a system requires > them to be off, as it really helps the debugging process, as well as > helping to identify locking problems as the system evolves." > > > You might want to look at the stats I have for a simple bonnie run with and > without > the WITNESS stuff. Block Write throughput is not much different, but there is a > huge > difference when "fetching" data which was still in memory. I could very well > imagine > that a similar effect would impact your feel of responsiveness. > http://freebee.digiware.nl/FreeBSD/NFS-performance/#bonnie-local > > --WjW > > ---- Marc G. Fournier Hub.Org Networking Services (http://www.hub.org) Email: scrappy@hub.org Yahoo!: yscrappy ICQ: 7615664
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