From owner-freebsd-current Mon Jul 19 17: 6:14 1999 Delivered-To: freebsd-current@freebsd.org Received: from allegro.lemis.com (allegro.lemis.com [192.109.197.134]) by hub.freebsd.org (Postfix) with ESMTP id 3CE2F15109; Mon, 19 Jul 1999 17:06:02 -0700 (PDT) (envelope-from grog@freebie.lemis.com) Received: from freebie.lemis.com (freebie.lemis.com [192.109.197.137]) by allegro.lemis.com (8.9.1/8.9.0) with ESMTP id JAA13842; Tue, 20 Jul 1999 09:35:44 +0930 (CST) Received: (from grog@localhost) by freebie.lemis.com (8.9.3/8.9.0) id JAA75864; Tue, 20 Jul 1999 09:35:41 +0930 (CST) Date: Tue, 20 Jul 1999 09:35:41 +0930 From: Greg Lehey To: Julian Elischer Cc: tarkhil@asteroid.svib.ru, John Polstra , current@FreeBSD.ORG, stable@FreeBSD.ORG Subject: Re: Soft-updates feedback Message-ID: <19990720093541.N72885@freebie.lemis.com> References: <199907030501.JAA31071@shuttle.svib.ru> <37938972.1CFBAE39@whistle.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.95.4i In-Reply-To: <37938972.1CFBAE39@whistle.com>; from Julian Elischer on Mon, Jul 19, 1999 at 01:24:18PM -0700 WWW-Home-Page: http://www.lemis.com/~grog X-PGP-Fingerprint: 6B 7B C3 8C 61 CD 54 AF 13 24 52 F8 6D A4 95 EF Organization: LEMIS, PO Box 460, Echunga SA 5153, Australia Phone: +61-8-8388-8286 Fax: +61-8-8388-8725 Mobile: +61-41-739-7062 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Monday, 19 July 1999 at 13:24:18 -0700, Julian Elischer wrote: > Alex Povolotsky wrote: >> >> About a week ago, I've posted a message here and didn't got positive replies. >> >> The problem is: >> >> when I use soft-updates on IDE disks (disk on primary master, disk on >> secondary master, CD on primary slave), any active disk-using program >> (starting Netscape, starting EXMH) causes all other programs literally to stop >> for several seconds (well, 20-30 seconds is quite often!). Turning >> soft-updates off causes this nastiness to disappear, but also slows down >> disk-active processess. > > I saw this behaviour before.. > It was with an IDE disk drive running in PIO mode > > turning on DMA mode for the disk fixed it. > I have no idea as to what was goin wrong, however I > suggest that you try a kernel from -current as there has been a lot of > change in the areas that might cause this sort of thing. FWIW, there's something funny in the timing of the IDE driver, even in DMA mode. I find in Vinum that I don't get control back from the driver strategy routine until the request has completed. Greg -- See complete headers for address, home page and phone numbers finger grog@lemis.com for PGP public key To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message