From owner-freebsd-questions Tue Oct 12 3:56:17 1999 Delivered-To: freebsd-questions@freebsd.org Received: from atlas.rccn.net (atlas.rccn.net [193.136.7.1]) by hub.freebsd.org (Postfix) with SMTP id BF39214E50 for ; Tue, 12 Oct 1999 03:56:01 -0700 (PDT) (envelope-from jpsp@rccn.net) Received: (qmail 46921 invoked by uid 1021); 12 Oct 1999 10:55:56 -0000 Received: from localhost (sendmail-bs@127.0.0.1) by localhost with SMTP; 12 Oct 1999 10:55:56 -0000 Date: Tue, 12 Oct 1999 11:55:56 +0100 (WEST) From: Joao Pagaime To: "TFC WLAN 97/98 - IST - ext.2269 (8418269)" Cc: freebsd-questions@FreeBSD.ORG, pagaime@rccn.net Subject: Re: Slow FreeBSD 3.2 In-Reply-To: Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-questions@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG Hi Sorry it's not an answer but rather a new question: Is there any way to improve (I mean increase) concurrency to disk accesses ? Maybe at the file system or kernel levels ? On Mon, 11 Oct 1999, TFC WLAN 97/98 - IST - ext.2269 (8418269) wrote: > > Hello all > > We have a Dell 4300 with 2 9GB SCSI disks, 512MB and > a Pentium II 450 MHz CPU. > > But, when ever 'top' reports a process in 'newbuf', 'getblk' > or 'biowr', the system becomes very slow, sometimes for a > few seconds. We can't even do a 'ls' properly... > > Unfortunately the system ends up on that state whenever > 'pine' or 'popper' runs on a large mailbox. Of course > we can't convince people to use 'maildir'. > > Since the machine is almost idle - CPU and memory - why does > this happen ? > > Is it a driver/disk problem ? > > What do those states reported by top ('newbuf', 'getblk', 'biowr') > mean ? > > Is there some kernel optimization we can do ? Kernel upgrade ? > > Thanks, > Joao > To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message