Date: Fri, 21 Mar 2003 23:31:45 -0600 From: Kirk Strauser <kirk@strauser.com> To: freebsd-alpha@freebsd.org Subject: Tuning my PC64 (heh!) Message-ID: <87znnoynjy.fsf@pooh.honeypot.net>
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A friend gave me a PC64 system that I'm using as a firewall (running
-STABLE). I have a couple of quick questions:
1) The system has 2MB of L2 cache. Would bumping that to 8MB make a
noticeable difference on, say, a make buildworld?
2) I've installed a Tekram DC-390f U/W SCSI card, and two U/W drives: a 4GB
IBM and a 9GB IBM. Throughput is dismal, to say the least:
bonnie++ on the 4GB:
Version 1.93c ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
gopher.honeypo 300M 6 99 7420 69 3631 41 12 99 7568 42 168.2 65
Latency 2663ms 120ms 676ms 1859ms 25477us 3951ms
Version 1.93c ------Sequential Create------ --------Random Create--------
gopher.honeypot.net -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 967 96 2611 94 1438 89 975 96 2496 95 1661 91
Latency 369ms 300ms 353ms 361ms 225ms 240ms
bonnie++ on the 9GB:
Version 1.93c ------Sequential Output------ --Sequential Input- --Random-
Concurrency 1 -Per Chr- --Block-- -Rewrite- -Per Chr- --Block-- --Seeks--
Machine Size K/sec %CP K/sec %CP K/sec %CP K/sec %CP K/sec %CP /sec %CP
gopher.honeypo 300M 6 99 9349 94 4957 68 11 99 12079 96 235.7 106
Latency 1586ms 145ms 138ms 803ms 13585us 1979ms
Version 1.93c ------Sequential Create------ --------Random Create--------
gopher.honeypot.net -Create-- --Read--- -Delete-- -Create-- --Read--- -Delete--
files /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP /sec %CP
16 92 11 4292 99 155 12 83 10 4124 99 257 24
Latency 488ms 1891us 262ms 364ms 2565us 257ms
Is there some "DONT_MAKE_SMALL_WRITES_CRAWL" setting that I've missed
somewhere? Running nightly backups on the machine takes forever. I really
don't expect miracles from the little fellow, but still...
Thanks for any information,
--
Kirk Strauser
In Googlis non est, ergo non est.
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