Date: Tue, 24 May 2005 20:51:15 -0700 From: Kris Kennaway <kris@obsecurity.org> To: Matthias Buelow <mkb@incubus.de> Cc: freebsd-stable@freebsd.org, Kris Kennaway <kris@obsecurity.org> Subject: Re: Performance of 4.x vs 5.x (Re: Lifetime of FreeBSD branches) Message-ID: <20050525035115.GA43824@xor.obsecurity.org> In-Reply-To: <4293F4D9.90204@incubus.de> References: <20050523211307.GA36552@xor.obsecurity.org> <42924949.1070902@incubus.de> <200505242141.38289.max@love2party.net> <42938C2E.6020301@incubus.de> <20050524201942.GA28257@xor.obsecurity.org> <42938D40.1050502@incubus.de> <20050524202647.GA28322@xor.obsecurity.org> <4293A18F.6080200@incubus.de> <20050524221454.GA56421@xor.obsecurity.org> <4293F4D9.90204@incubus.de>
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--YZ5djTAD1cGYuMQK Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Wed, May 25, 2005 at 05:45:29AM +0200, Matthias Buelow wrote: > Kris Kennaway wrote: >=20 > >OK, thanks for confirming. The next step is for you to try 6.0 with > >debug.mpsafevfs=3D1 on a machine that exhibits the problem under 5.4, so > >we can test whether the problem is caused by VFS being under Giant on > >5.4. >=20 > I have now built 6.0-current from yesterday's source, verified that=20 > debug.mpsafevfs=3D1, and unpacked the firefox source. > Unfortunately your hypothesis didn't hold. In fact, it's a lot worse=20 > than on 5.4-STABLE. Plus, even operations like bulk-rm'ing the unpacked= =20 > firefox tree make X11 crawl and stutter, something that didn't have any= =20 > observable effect on 5.4-STABLE. Maybe the dmesg output is of some help: >=20 >=20 > Copyright (c) 1992-2005 The FreeBSD Project. > Copyright (c) 1979, 1980, 1983, 1986, 1988, 1989, 1991, 1992, 1993, 1994 > The Regents of the University of California. All rights reserved. > FreeBSD 6.0-CURRENT #0: Wed May 25 05:00:48 CEST 2005 > root@drjekyll.mkbuelow.net:/usr/obj/usr/src/sys/GENERIC > WARNING: WITNESS option enabled, expect reduced performance. *Ahem* Kris --YZ5djTAD1cGYuMQK Content-Type: application/pgp-signature Content-Disposition: inline -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.1 (FreeBSD) iD8DBQFCk/YyWry0BWjoQKURAvftAJwK6b+CkmpIKx73bhxdBpVg9t6bcwCgzCZO SUkyFnJ1FaKlEFicHd6hvE0= =SbF2 -----END PGP SIGNATURE----- --YZ5djTAD1cGYuMQK--
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