From owner-freebsd-stable Sat May 12 20:54:54 2001 Delivered-To: freebsd-stable@freebsd.org Received: from warez.scriptkiddie.org (uswest-dsl-142-38.cortland.com [209.162.142.38]) by hub.freebsd.org (Postfix) with ESMTP id B70C437B43E for ; Sat, 12 May 2001 20:54:52 -0700 (PDT) (envelope-from lamont@scriptkiddie.org) Received: from coredump.scriptkiddie.rog (coredump.scriptkiddie.org [192.168.69.2]) by warez.scriptkiddie.org (Postfix) with ESMTP id 2701A62D01; Sat, 12 May 2001 20:54:52 -0700 (PDT) Date: Sat, 12 May 2001 20:54:52 -0700 (PDT) From: To: Cc: Subject: Re: fat32 slower than dogshit? In-Reply-To: <20010512074346.B18681@irrelevant.org> Message-ID: MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-freebsd-stable@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Sat, 12 May 2001 simond@irrelevant.org wrote: > On Fri, May 11, 2001 at 03:19:21PM -0700, Lamont Granquist wrote: > > Well, i think it is, i'm actually not too sure exactly how fast dogshit is > > in the first place. But in doing a simple untar on a fat32 partition > > using both 4-stable a couple days after release and a recently updated > > 4-stable as of yesterday (5/10) it goes about 20-30 times slower than an > > untar on a UFS partition. Now i know fat32 is supposed to be slower than > > UFS, but this seems a little bit rediculous. Does this sound like a known > > problem? If someone wants more information I can probably dig down and > > get it if I know what you want... > > I noticed that the msdos filesystem got very slow myself a while back, for > me turning the write cache (ata(4)) back on helped speed things back up > again, it's not the ideal solution, but it worked for me. Well, based on the recent discussions in this list about IDE write caches, I'm not real hot on this as a solution. Is there some way to profile kernel execution in the driver or in the VFS layer to get an idea of what the driver is doing wrong? To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-stable" in the body of the message