Date: Wed, 24 Jun 2009 22:04:41 +0200 From: Fabian Keil <freebsd-listen@fabiankeil.de> To: freebsd-current@freebsd.org Subject: Re: mbuf layout optimizations Message-ID: <20090624220441.5ee0b4ce@fabiankeil.de> In-Reply-To: <20090620123657.21728020@fabiankeil.de> References: <alpine.BSF.2.00.0906182307470.1025@desktop> <20090620123657.21728020@fabiankeil.de>
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[-- Attachment #1 --] Fabian Keil <freebsd-listen@fabiankeil.de> wrote: > Jeff Roberson <jroberson@jroberson.net> wrote: > > > http://people.freebsd.org/~jeff/mbuf2.diff > > > This is a call for testers and feedback on my mbuf layout > > improvements. I'm trying to decide whether I will push to have these > > included in 8.0. After reducing the scope slightly from my last patch, > > I have not encountered any problems. Kip Macy has also been using it > > for the past few weeks without issue. > > > > You should not expect any functional changes from this patch. The > > goal is mostly to pave the way fors more sensible mbuf handling in the > > future, although it does offer a few performance benefits. > > So far I haven't been able to reproduce the em-related panic I > reported with an earlier version of the patch. I'm not sure if > it was reproducible back then, though. By now I experienced three system freezes with Xorg running (thus no backtrace, I'm afraid). One of them occurred directly after opening a new connection through the browser. All three freezes happened with em0 down and unconnected, iwi0 in use and with Tor and a background ping running. I run cvsup before applying the patch, so this may be an unrelated problem that crept in with the update. I'm currently compiling the kernel with vanilla CURRENT from 2009-06-21 to see if the freezes go away. Fabian [-- Attachment #2 --] -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.12 (FreeBSD) iEYEARECAAYFAkpChuMACgkQBYqIVf93VJ3YPACfQZQaEmFAc9CSAXNXdzDMOTgh xjgAoI4NCNCLEGOFZn3f5eQwOuRyxG2G =i1JM -----END PGP SIGNATURE-----help
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