Date: Sun, 16 Nov 1997 21:52:30 -0800 (PST) From: Simon Shapiro <Shimon@i-connect.net> To: Amancio Hasty <hasty@rah.star-gate.com> Cc: current@FreeBSD.ORG, Steve Passe <smp@csn.net>, Steve Price <sprice@hiwaay.net> Subject: Re: make world time???/ Message-ID: <XFMail.971116215230.Shimon@i-Connect.Net> In-Reply-To: <199711162043.MAA08177@rah.star-gate.com>
next in thread | previous in thread | raw e-mail | index | archive | help
Hi Amancio Hasty; On 16-Nov-97 you wrote: > > Cool! > > > I am curious as for the make world time on a dual PPro system with > fast disks. It looks like we are very cpu bound with fast disks. > > Tnks, > Amancio I think it bottoms (for a FULL build) at 100 minutes or SO. Disk I/O stops being an issue around there. Memeory is not a problem either. On a P6-200x2, with 256MB of RAM, a DUAL DPT 3334UW, /usr/src/ on a 5x RAID-5 array, /usr/obj on a 8x RAID-0 array, DPT with 64MB of RAM, we are just at 84 minutes. This is with -pipe, noatime, async, -j8, etc. I could not verify putting /tmp /var/tmp on mfs as the system reliably crashes. The ``disk'' I/O is at about 200-400 I/O per second - about 1/9th of the capacity of such a system, memory has over 120MB of free RAM, so we are not gaining much. What I do NOT know, and asked before (maybe I should name names :-), is is it CPU saturation, PCI saturation or RAM saturation? The system reports 80-95% CPU utilization in kernel, 70-80% in user space. I have an AMI Goliath on order. It is supposed to have tow independant PCI busses, on the Orion chipset. Let's see then. Simon
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?XFMail.971116215230.Shimon>