From owner-freebsd-current Fri Sep 25 12:36:55 1998 Return-Path: Received: (from majordom@localhost) by hub.freebsd.org (8.8.8/8.8.8) id MAA25868 for freebsd-current-outgoing; Fri, 25 Sep 1998 12:36:55 -0700 (PDT) (envelope-from owner-freebsd-current@FreeBSD.ORG) Received: from vnode.vmunix.com (vnode.vmunix.com [209.112.4.20]) by hub.freebsd.org (8.8.8/8.8.8) with ESMTP id MAA25855 for ; Fri, 25 Sep 1998 12:36:51 -0700 (PDT) (envelope-from mark@vnode.vmunix.com) Received: (from mark@localhost) by vnode.vmunix.com (8.8.8/8.8.8) id PAA09967; Fri, 25 Sep 1998 15:36:26 -0400 (EDT) (envelope-from mark) Message-ID: <19980925153626.A9927@vmunix.com> Date: Fri, 25 Sep 1998 15:36:26 -0400 From: Mark Mayo To: Alex , current Subject: Re: shouting in a void? References: <199809240237.TAA05857@dingo.cdrom.com> Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Mailer: Mutt 0.93.1i In-Reply-To: ; from Alex on Wed, Sep 23, 1998 at 10:09:06PM -0700 X-Operating-System: FreeBSD 2.2.6-STABLE i386 Sender: owner-freebsd-current@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.ORG On Wed, Sep 23, 1998 at 10:09:06PM -0700, Alex wrote: > On Wed, 23 Sep 1998, Mike Smith wrote: > [...] > > > I have a plan to eliminate the disk thrashing, but haven't implemented > > > it yet. Once that's done, I believe it will truly be limited by > > > the network link, unless you've got a T1 or better, or really slow > > > hardware. > > > > Heh. You have to see what it does to a cvsup server to believe it. 8) > > > > With 10-15 clients running, the 10krpm Cheetah in freefall is > > prettymuch nailed to the wall. Even if you just cached the stat > > results against the mtime for something in the repo, you'd win > > enormously. > > Heh. I wonder what 20 clients do to the Sun Enterprise cvs.kde.org is > running (for that matter, I wonder what kinda disks its got).. It will have 7200rpm Seagate cudas. And unless they've got a few disks striped (preferably in an array) they will thrash and be "nailed to the wall" just like freefall. And given the fact that doing a stat() seems to take forever on Solaris, plus the slower drive, I'd wager on a single disk freefall would eat it up. :-) -Mark > > - alex > > > To Unsubscribe: send mail to majordomo@FreeBSD.org > with "unsubscribe freebsd-current" in the body of the message -- ------------------------------------------------------------------------ Mark Mayo mark@vmunix.com RingZero Comp. http://www.vmunix.com/mark ------------------------------------------------------------------------ "The problem is how do you build tools that understand your programs at a deeper semantic level." - James Gosling To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-current" in the body of the message