From owner-freebsd-smp Sun Sep 24 11:27:16 2000 Delivered-To: freebsd-smp@freebsd.org Received: from flood.ping.uio.no (flood.ping.uio.no [129.240.78.31]) by hub.freebsd.org (Postfix) with ESMTP id 7E66137B42C; Sun, 24 Sep 2000 11:27:07 -0700 (PDT) Received: (from des@localhost) by flood.ping.uio.no (8.9.3/8.9.3) id UAA49313; Sun, 24 Sep 2000 20:26:59 +0200 (CEST) (envelope-from des@ofug.org) X-URL: http://www.ofug.org/~des/ X-Disclaimer: The views expressed in this message do not necessarily coincide with those of any organisation or company with which I am or have been affiliated. To: Warner Losh Cc: The Hermit Hacker , Bruce Evans , freebsd-current@FreeBSD.ORG, freebsd-smp@FreeBSD.ORG Subject: Re: 'interrupt-level buffer overflows' for sio device? References: <200009080314.VAA50701@harmony.village.org> From: Dag-Erling Smorgrav Date: 24 Sep 2000 20:26:58 +0200 In-Reply-To: Warner Losh's message of "Thu, 07 Sep 2000 21:14:58 -0600" Message-ID: Lines: 26 User-Agent: Gnus/5.0802 (Gnus v5.8.2) Emacs/20.4 MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Sender: owner-freebsd-smp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Warner Losh writes: > In message The Hermit Hacker writes: > : Okay, I'm a little confused here ... from what I'm reading/following, this > : isn't a new problem ... or is it? If not, why has it suddenly manifested > : itself with the new SMP code? > It seems to be new with the SMP code. At least that's what my reading > of the original message is. I'm seeing the same thing as Marc, but I have a little more info: 1) it started after the SMPng commit. 2) it's not just sio, it's everything: - interactive response is markedly slower. - the keyboard autorepeats slower than it used to (even with kbdcontrol -r fast). - I/O bound processes such as mpg123 or cvsup will pause briefly when there is other I/O going on (moving the mouse, typing fast, holding down a key on the keyboard), which they didn't use to. DES -- Dag-Erling Smorgrav - des@ofug.org To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-smp" in the body of the message