Date: Wed, 9 Jul 1997 21:44:40 +1000 (EST) From: "Daniel O'Callaghan" <danny@panda.hilink.com.au> To: freebsd-hackers@freebsd.org Subject: Re: news server behaviour Message-ID: <Pine.BSF.3.91.970709212620.869w-100000@panda.hilink.com.au>
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I'm still puzzled by the news server behaviour. The machine is a P100
with 32 MB RAM, 1 x 1GB and 1 x 730 MB quantum HDD, no readers, receiving
about kbps from a ppp connection. Innd shows CPU usage of 90%; user CPU
is about 45%; system CPU is about 50%.
I did have an adaptec 1542cf host adapter and DG suggested the bounce
buffers were causing problems. He also suggested enabling the Pentium
bcopy optimizations.
I have replaced the 1542cf with a 2940 pci host adapter and enabled the
bcopy optimizations, with no discernable difference in behaviour.
Below is the output of 'iostat -c 50'. Can anyone tell me why the
CPU is spending so much time on system things?
Thanks,
Danny
tty sd0 sd1 wd0 cpu
tin tout sps tps msps sps tps msps sps tps msps us ni sy in id
221 61 11 1 0.0 6 0 0.0 12 1 12.0 9 0 14 1 76
598 0 20 2 0.0 16 1 0.0 214 13 17.8 33 0 60 4 4
15 0 44 3 0.0 167 15 0.0 60 4 9.9 36 0 47 2 16
0 0 0 0 0.0 0 0 0.0 0 0 0.0 39 0 60 1 0
0 0 0 0 0.0 167 11 0.0 0 0 0.0 27 0 56 2 15
4340 0 16 2 0.0 65 8 0.0 91 5 18.1 43 0 53 4 0
0 0 0 0 0.0 16 1 0.0 0 0 0.0 36 0 64 1 0
445 0 60 6 0.0 0 0 0.0 0 0 0.0 35 0 56 1 9
902 0 100 7 0.0 10 1 0.0 32 2 13.7 51 0 48 2 0
0 0 0 0 0.0 0 0 0.0 0 0 0.0 29 0 71 0 0
2351 0 107 8 0.0 0 0 0.0 32 2 9.8 34 0 60 2 5
0 0 32 4 0.0 0 0 0.0 0 0 0.0 42 0 58 0 0
0 0 0 0 0.0 0 0 0.0 0 0 0.0 25 0 75 0 0
62 0 28 2 0.0 0 0 0.0 0 0 0.0 25 0 71 2 3
980 0 62 5 0.0 0 0 0.0 32 2 2.0 38 0 57 5 0
0 0 0 0 0.0 0 0 0.0 0 0 0.0 31 0 67 2 0
0 0 603 38 0.0 191 12 0.0 0 0 0.0 22 0 35 1 42
0 0 42 4 0.0 16 1 0.0 32 2 5.9 48 0 51 1 0
0 0 0 0 0.0 0 0 0.0 0 0 0.0 33 0 67 0 0
1727 0 16 1 0.0 0 0 0.0 32 2 5.9 44 0 53 3 0
tty sd0 sd1 wd0 cpu
tin tout sps tps msps sps tps msps sps tps msps us ni sy in id
0 0 0 0 0.0 0 0 0.0 0 0 0.0 46 0 53 1 0
0 0 0 0 0.0 175 11 0.0 0 0 0.0 22 0 61 1 16
0 0 619 40 0.0 32 2 0.0 34 3 11.6 29 0 43 3 26
0 0 85 7 0.0 32 2 0.0 374 27 13.9 42 0 47 12 0
1116 0 79 6 0.0 0 0 0.0 0 0 0.0 40 0 53 3 5
0 0 0 0 0.0 0 0 0.0 0 0 0.0 34 0 63 3 0
153 0 22 2 0.0 0 0 0.0 0 0 0.0 32 0 64 2 3
1791 0 49 5 0.0 0 0 0.0 33 3 14.2 39 0 58 2 0
0 0 0 0 0.0 0 0 0.0 0 0 0.0 33 0 67 0 0
0 0 587 37 0.0 191 12 0.0 0 0 0.0 19 0 34 2 45
0 0 35 4 0.0 16 1 0.0 32 2 13.7 42 0 57 2 0
0 0 0 0 0.0 0 0 0.0 0 0 0.0 30 0 69 1 0
1277 0 16 1 0.0 0 0 0.0 32 2 9.8 45 0 52 3 0
0 0 0 0 0.0 0 0 0.0 0 0 0.0 41 0 57 2 0
0 0 95 6 0.0 167 11 0.0 0 0 0.0 24 0 51 2 23
2083 0 54 4 0.0 48 4 0.0 32 2 5.9 47 0 47 3 3
0 0 0 0 0.0 0 0 0.0 0 0 0.0 43 0 57 1 0
600 0 28 2 0.0 0 0 0.0 0 0 0.0 40 0 56 1 3
943 0 37 3 0.0 43 4 0.0 47 3 13.7 39 0 58 3 0
0 0 0 0 0.0 0 0 0.0 0 0 0.0 32 0 68 0 0
tty sd0 sd1 wd0 cpu
tin tout sps tps msps sps tps msps sps tps msps us ni sy in id
2098 0 52 5 0.0 0 0 0.0 32 2 13.7 41 0 57 1 1
0 0 28 2 0.0 0 0 0.0 0 0 0.0 36 0 61 2 0
0 0 0 0 0.0 158 10 0.0 0 0 0.0 28 0 55 2 15
0 0 637 42 0.0 48 3 0.0 32 2 5.9 33 0 36 2 28
0 0 0 0 0.0 0 0 0.0 0 0 0.0 40 0 59 1 0
63 0 0 0 0.0 0 0 0.0 0 0 0.0 32 0 68 0 0
1532 0 16 1 0.0 0 0 0.0 32 2 5.9 37 0 61 2 0
0 0 0 0 0.0 0 0 0.0 0 0 0.0 39 0 61 0 0
0 0 587 37 0.0 191 12 0.0 0 0 0.0 24 0 37 1 38
0 0 30 3 0.0 16 1 0.0 32 2 5.9 45 0 53 2 0
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