Date: Mon, 25 Oct 1999 01:39:49 +0400 (MSD) From: "Andrew L. Neporada" <andrew@sign.chg.ru> To: freebsd-questions@freebsd.org Subject: 3.3-STABLE : Performance problems?? Message-ID: <Pine.BSF.4.10.9910242358190.7345-100000@sign.chg.ru>
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Hi All! For a long time I participate in one distributed computational project ( see http://www.mersenne.org for details). So I'am running a special program at low priority (nice=20), that utilizes all CPU power. After upgrading from 3.1-RELEASE to 3.3-STABLE I've noticed that average performance (averaging period is big enough to eliminate impact from other tasks ) of this programm is only 77% from measured performance on 3.1R and same hardware. I also notice some strange thing: top shows about 30% 'interrupt' at CPU states line. Maybe someone could help me to find out what happens? Any help would be greatly appreciated. Andrew. Technical details: System - Pentium 120, 32M memory. uname -a output : FreeBSD sign.chg.ru 3.3-STABLE FreeBSD 3.3-STABLE #0: Fri Oct 22 06:30:20 MSD 1999 andrew@sign.chg.ru:/usr/src/sys/compile/SIGN_221099 i386 top output: last pid: 7505; load averages: 1.11, 1.07, 1.01 up 2+18:55:53 01:30:48 40 processes: 2 running, 38 sleeping CPU states: 0.0% user, 61.2% nice, 0.4% system, 38.5% interrupt, 0.0% idle Mem: 9852K Active, 5340K Inact, 9044K Wired, 3276K Cache, 3458K Buf, 2444K Free Swap: 128M Total, 2672K Used, 125M Free, 2% Inuse PID USERNAME PRI NICE SIZE RES STATE TIME WCPU CPU COMMAND 255 root 105 20 17884K 2244K RUN 66.5H 98.39% 98.39% mprime 131 root 2 -12 1060K 584K select 2:39 0.00% 0.00% xntpd 262 root 2 0 1112K 624K select 1:08 0.00% 0.00% sshd1 251 root 2 0 1600K 676K select 0:51 0.00% 0.00% httpd 7288 root 2 0 1444K 1140K select 0:10 0.00% 0.00% sshd1 197 root 2 0 1308K 652K select 0:08 0.00% 0.00% sendmail 193 root 10 0 992K 456K nanslp 0:06 0.00% 0.00% cron 124 root 2 0 828K 436K select 0:05 0.00% 0.00% syslogd 7382 root 2 0 1444K 1140K select 0:05 0.00% 0.00% sshd1 [......] To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-questions" in the body of the message
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