Date: Tue, 26 Jan 1999 02:45:32 +0200 From: Sheldon Hearn <axl@iafrica.com> To: Brian Feldman <green@unixhelp.org> Cc: Matthew Dillon <dillon@apollo.backplane.com>, Lee Cremeans <lee@st-lcremean.tidalwave.net>, current@FreeBSD.ORG Subject: Re: IDE DMA works, I'll be a... Message-ID: <1624.917311532@axl.noc.iafrica.com> In-Reply-To: Your message of "Mon, 25 Jan 1999 19:40:38 EST." <Pine.BSF.4.05.9901251937010.6492-100000@janus.syracuse.net>
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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
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