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>
index | next in thread | previous in thread | raw e-mail
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. Simonhome | help
Want to link to this message? Use this
URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?XFMail.971116215230.Shimon>