From owner-freebsd-current Mon Jan 25 16:46:02 1999 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id QAA14094 for freebsd-current-outgoing; Mon, 25 Jan 1999 16:46:02 -0800 (PST) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from axl.noc.iafrica.com (axl.noc.iafrica.com [196.31.1.175]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id QAA14059 for ; Mon, 25 Jan 1999 16:45:59 -0800 (PST) (envelope-from sheldonh@axl.noc.iafrica.com) Received: from sheldonh (helo=axl.noc.iafrica.com) by axl.noc.iafrica.com with local-esmtp (Exim 2.10 #1) id 104wdI-0000QD-00; Tue, 26 Jan 1999 02:45:32 +0200 From: Sheldon Hearn To: Brian Feldman cc: Matthew Dillon , Lee Cremeans , current@FreeBSD.ORG Subject: Re: IDE DMA works, I'll be a... In-reply-to: Your message of "Mon, 25 Jan 1999 19:40:38 EST." Date: Tue, 26 Jan 1999 02:45:32 +0200 Message-ID: <1624.917311532@axl.noc.iafrica.com> Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Mon, 25 Jan 1999 19:40:38 EST, Brian Feldman wrote: > I say this because I am down to ~2.5MB/s on each hard drive, a MB or > so decrease; I also seem to be reading (bs=512k) from the CD uncooked > device at the right speed (~2MB/s), but it takes up 40% of the CPU, > which seems to be just PIO. Anyone else? Since I rebuilt world shortly after Matt's VM surgery started, I've also noticed this -- lower apparent transfer rates from /dev/zero to disk, higher CPU usage during such transfers. I'm _not_ saying it's Matt's stuff that's done this, it's just that that was the stuff I _noticed_ happening in commit mail. I think I saw something happening to wd.c recently as well, so I _definitely_ am not going on record as laying blame. Just some confirmation. :-) Ciao, Sheldon. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message