Date: Wed, 10 Nov 2004 17:54:07 +0100 From: Sebastian Schulze Struchtrup <seb@struchtrup.com> To: Poul-Henning Kamp <phk@phk.freebsd.dk> Cc: current@freebsd.org Subject: Re: [HEADSUP] Please help test device vnode bypass! Message-ID: <419247AF.9070400@struchtrup.com> In-Reply-To: <2602.1099910947@critter.freebsd.dk> References: <2602.1099910947@critter.freebsd.dk>
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Poul-Henning Kamp wrote: >Please test this feature. > >Even better, help test the perforce branch phk_bufwork if you can. > >Poul-Henning > >In message <200411081046.iA8AklqT003808@repoman.freebsd.org>, Poul-Henning Kamp > writes: > > >>phk 2004-11-08 10:46:47 UTC >> >> FreeBSD src repository >> >> Modified files: >> sys/fs/devfs devfs_vnops.c >> Log: >> Add optional device vnode bypass to DEVFS. >> >> >> fops=0 1000000 bytes transferred in 4.865386 secs (205534 bytes/sec) fops=1 1000000 bytes transferred in 2.513814 secs (397802 bytes/sec) This would result in approx. 2us per syscall. System is FreeBSD 6.0-CURRENT #25: Tue Nov 9 13:44:16 CET 2004 (something like an Athlon XP 2k) with invariants and witness, without anything out of phk_bufwork. No problems until now.
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