From owner-freebsd-hackers Wed Nov 5 15:22:50 1997 Return-Path: Received: (from root@localhost) by hub.freebsd.org (8.8.7/8.8.7) id PAA17697 for hackers-outgoing; Wed, 5 Nov 1997 15:22:50 -0800 (PST) (envelope-from owner-freebsd-hackers) Received: from sax.sax.de (sax.sax.de [193.175.26.33]) by hub.freebsd.org (8.8.7/8.8.7) with SMTP id PAA17687 for ; Wed, 5 Nov 1997 15:22:43 -0800 (PST) (envelope-from j@uriah.heep.sax.de) Received: (from uucp@localhost) by sax.sax.de (8.6.12/8.6.12-s1) with UUCP id AAA13227; Thu, 6 Nov 1997 00:22:18 +0100 Received: (from j@localhost) by uriah.heep.sax.de (8.8.7/8.8.5) id AAA17821; Thu, 6 Nov 1997 00:08:15 +0100 (MET) Message-ID: <19971106000814.LR12891@uriah.heep.sax.de> Date: Thu, 6 Nov 1997 00:08:14 +0100 From: j@uriah.heep.sax.de (J Wunsch) To: hackers@FreeBSD.ORG Cc: joe@via.net (Joe McGuckin) Subject: Re: 'sys' is consuming %50 of cpu References: <199711052011.MAA27359@monk.via.net> X-Mailer: Mutt 0.60_p2-3,5,8-9 Mime-Version: 1.0 X-Phone: +49-351-2012 669 X-PGP-Fingerprint: DC 47 E6 E4 FF A6 E9 8F 93 21 E0 7D F9 12 D6 4E Reply-To: joerg_wunsch@uriah.heep.sax.de (Joerg Wunsch) In-Reply-To: <199711052011.MAA27359@monk.via.net>; from Joe McGuckin on Nov 5, 1997 12:11:32 -0800 Sender: owner-freebsd-hackers@FreeBSD.ORG X-Loop: FreeBSD.org Precedence: bulk As Joe McGuckin wrote: > What about turning off FAILSAFE? Would that make a noticable difference? Certainly not. AFAIK, it's by now still only the NCR driver that does use this option (and disables tagged command queuing). > Also, the ethernet card I'm using is a 100mb 3COM (VX driver). I notice that > the man page for the vx driver implies that this card is a poor performer. > Is that still true? Yep, that's most likely the reason. These cards do just PIO only (with our driver -- but even the 3Com manual admits that the cost of setting up a busmaster DMA transfer is often too high to be justified by the gain). > What card should I get? Most people will certainly recommend a card with a DEC chip (many vendors build it), or an Intel Etherexpress 100/B. I haven't used the latter myself, but i think wcarchive stands for itself. ;) -- cheers, J"org joerg_wunsch@uriah.heep.sax.de -- http://www.sax.de/~joerg/ -- NIC: JW11-RIPE Never trust an operating system you don't have sources for. ;-)