Date: Mon, 03 Nov 1997 22:07:38 -0800 (PST) From: Simon Shapiro <Shimon@i-Connect.Net> To: freebsd-current@freebsd.org Subject: More on fast make world... Message-ID: <XFMail.971103220738.Shimon@i-Connect.Net>
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I really am not so sure what takes the time, but it is not disk I/O.
I setup a test machine with 128MB of RAM, a RAID-1 root disk, a RAID-0
8x32KB stripes wide for /usr/src and /usr/obj, on a DPT PM3334UDW (Ultra,
wide, differential). Disks are 4GB Barcudas all around.
This configuration is capable of 980+ disk I/O per second on the RAID-1 and
1740+ on the RAID-0 array.
Starting with a fresh install, SMP kernel current for today, DPT configured
with no options, but the performance monitors and a 1 sec timeout hack to
catch lost interrupts (new firmware that may be a bit buggy).
Top reports (abbreviated):
load averages: 7.36, 6.59, 5.06
CPU states: 54.1% user, 0.0% nice, 44.4% system, 1.6% interrupt, 0.0%idle
Mem: 11M Active, 17M Inact, 23M Wired, 47M Cache, 8248K Buf, 26M Free
Iostat says:
tty sd0 sd16 cpu
tin tout sps tps msps sps tps msps us ni sy in id
0 1905 771 74 0.0 668 56 0.0 27 0 51 2 20
This is typical over the last hour or so. Anything else I should try?
Simon
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