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Subjectweird system load (2.4.18-pre3)
Hello,

I have a linux router running 2.4.18-pre3 kernel and I've got the
following problem with it:

It doesn't have free cpu, more than 75% of the resources go to system:

procs memory swap io system
cpu
r b w swpd free buff cache si so bi bo in cs us
sy id
3 0 2 5544 16088 165440 265572 0 0 1 62 62 24 14
44 41
3 0 2 5544 15724 165440 265640 0 0 0 0 5385 5998 22
78 0
2 0 2 5544 15916 165440 265624 0 0 0 0 4646 4763 22
78 0
3 0 2 5544 15356 165440 265648 0 0 0 0 3876 3553 19
81 0
3 0 2 5544 15660 165460 265672 0 0 0 492 4571 4200 20
80 0
2 0 2 5544 16000 165460 265684 0 0 0 0 5635 5605 19
81 0
2 0 1 5544 15624 165460 265752 0 0 0 0 6341 5389 21
79 0
4 0 2 5544 15220 165468 265744 0 0 0 200 5137 5024 25
75 0
3 0 2 5544 15520 165468 265808 0 0 0 0 5569 5161 20
79 1
2 0 2 5544 15240 165480 265788 0 0 0 360 5778 4334 20
80 0
3 0 1 5544 15456 165480 265832 0 0 0 0 6113 5114 19
81 0
3 0 2 5544 15100 165480 265848 0 0 0 0 6103 4913 19
81 0
3 0 2 5544 15444 165480 265884 0 0 0 152 5910 5601 19
80 0
3 0 2 5544 15648 165480 265900 0 0 0 0 4448 4256 20
80 0
2 0 2 5544 15372 165480 265972 0 0 0 448 4721 4975 20
80 0
3 0 2 5544 15340 165480 265968 0 0 0 112 5509 5347 23
77 0
3 0 2 5544 15020 165480 265988 0 0 0 0 5691 4933 20
80 0
3 0 2 5544 15312 165480 266020 0 0 0 0 6026 4480 18
82 0
2 0 2 5544 14996 165480 266028 0 0 0 0 5717 5560 22
78 0
3 0 2 5544 15260 165484 266056 0 0 0 560 6052 5510 21
78 0
3 0 2 5544 14904 165484 266076 0 0 0 0 6148 5641 17
83 0
3 0 2 5544 15308 165484 266104 0 0 0 0 5702 5024 21
79 0
3 0 2 5544 15560 165484 266120 0 0 0 188 5892 4814 24
76 0

Here is a process listing:

USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 1428 488 ? S Feb10 0:20 init [3]
root 2 0.0 0.0 0 0 ? SW Feb10 0:00 [keventd]
root 3 0.0 0.0 0 0 ? RWN Feb10 2:44
[ksoftirqd_CPU0]
root 4 0.0 0.0 0 0 ? RWN Feb10 2:48
[ksoftirqd_CPU1]
root 5 0.0 0.0 0 0 ? SW Feb10 0:07 [kswapd]
root 6 0.0 0.0 0 0 ? SW Feb10 0:00 [bdflush]
root 7 0.0 0.0 0 0 ? SW Feb10 0:26 [kupdated]
root 8 0.0 0.0 0 0 ? SW Feb10 0:00 [scsi_eh_0]
root 9 0.0 0.0 0 0 ? SW Feb10 0:36 [kjournald]
root 95 0.0 0.0 0 0 ? SW Feb10 0:23 [kjournald]
root 96 0.0 0.0 0 0 ? SW Feb10 1:29 [kjournald]
root 372 0.0 0.1 2208 832 ? S Feb10 0:01
/usr/local/sbin/zebra -dk
root 376 0.0 0.2 3276 1464 ? S Feb10 0:21
/usr/local/sbin/bgpd -d
root 420 0.0 0.1 1504 660 ? S Feb10 0:12 syslogd -m
0 -r
root 430 0.0 0.0 1484 508 ? S Feb10 0:00 klogd
nobody 456 0.0 0.1 7724 712 ? S Feb10 0:00 identd -e
-o
nobody 458 0.0 0.1 7724 712 ? S Feb10 0:10 identd -e
-o
nobody 459 0.0 0.1 7724 712 ? S Feb10 0:56 identd -e
-o
nobody 460 0.0 0.1 7724 712 ? S Feb10 0:56 identd -e
-o
nobody 461 0.0 0.1 7724 712 ? S Feb10 0:00 identd -e
-o
root 470 0.0 0.1 2796 776 ? S Feb10 0:10
/usr/sbin/sshd
root 492 0.0 0.1 2324 892 ? S Feb10 0:00 xinetd
-reuse -pidfile /var/run/xinetd.pid
root 637 0.0 0.6 8772 3144 ? S Feb10 0:23
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
root 652 0.0 0.1 1660 716 ? S Feb10 0:03 crond
apache 653 0.0 0.7 8920 3636 ? S Feb10 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
apache 654 0.0 0.6 8920 3524 ? S Feb10 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
apache 655 0.0 0.7 8948 3636 ? S Feb10 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
apache 656 0.0 0.7 8924 3608 ? S Feb10 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
apache 657 0.0 0.6 8920 3520 ? S Feb10 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
apache 658 0.0 0.7 8920 3636 ? S Feb10 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
apache 659 0.0 0.6 8920 3596 ? S Feb10 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
apache 660 0.0 0.7 8920 3604 ? S Feb10 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
root 1325 0.0 0.1 16912 620 ? S Feb10 0:30
/usr/sbin/snmpd -f
root 6451 0.0 0.0 1400 372 tty1 S Feb10 0:00
/sbin/mingetty tty1
root 6452 0.0 0.0 1400 372 tty2 S Feb10 0:00
/sbin/mingetty tty2
root 6453 0.0 0.0 1400 372 tty3 S Feb10 0:00
/sbin/mingetty tty3
root 6454 0.0 0.0 1400 372 tty4 S Feb10 0:00
/sbin/mingetty tty4
root 6455 0.0 0.0 1400 372 tty5 S Feb10 0:00
/sbin/mingetty tty5
root 6456 0.0 0.0 1400 372 tty6 S Feb10 0:00
/sbin/mingetty tty6
apache 26828 0.0 0.7 8924 3680 ? S Feb11 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
apache 13247 0.0 0.7 8924 3632 ? S Feb12 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
apache 13248 0.0 0.7 8964 3728 ? S Feb12 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVEapache
13249 0.0 0.7 8912 3620 ? S Feb12 0:00 /usr/sbin/httpd -D
HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
apache 15815 0.0 0.7 8912 3620 ? S Feb12 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
apache 11408 0.0 0.7 8912 3628 ? S Feb12 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
apache 11910 0.0 0.7 8960 3724 ? S Feb12 0:00
/usr/sbin/httpd -D HAVE_PERL -D HAVE_PHP4 -D HAVE_PROXY -D HAVE
root 9437 0.1 0.2 3008 1496 ? R 11:40 0:05
/usr/sbin/sshd
root 9465 0.0 0.3 2932 1760 pts/6 S 11:40 0:00 -bash
root 16104 0.0 0.2 2968 1396 ? S 11:52 0:01
/usr/sbin/sshd
root 16111 0.0 0.2 2556 1364 pts/7 S 11:52 0:00 -bash
root 16158 0.0 0.2 2968 1396 ? S 11:52 0:00
/usr/sbin/sshd
root 16159 0.0 0.2 2556 1364 pts/8 S 11:52 0:00 -bash
root 16186 0.1 0.3 3332 1840 pts/7 S 11:52 0:03 /usr/bin/mc
-P
root 16188 0.0 0.2 2624 1432 pts/9 S 11:52 0:00 bash
-rcfile .bashrc
root 19926 0.0 0.3 3144 1668 pts/8 S 12:01 0:01 /usr/bin/mc
-P
root 19928 0.0 0.2 2616 1412 pts/0 S 12:01 0:00 bash
-rcfile .bashrc
root 29668 0.0 0.2 2880 1380 ? S 12:19 0:00
/usr/sbin/sshd
root 29669 0.0 0.2 2552 1360 pts/5 S 12:19 0:00 -bash
root 2056 0.0 0.1 1660 776 ? S 12:30 0:00 CROND
root 2057 0.0 0.1 2036 976 ? SN 12:30 0:00 /bin/sh
/root/cbq/bin/collect
root 4297 0.9 0.9 6048 4856 ? SN 12:32 0:04
/usr/bin/perl /usr/local/mrtg/bin/mrtg /root/cbq/etc/mrtg-shape
root 7174 0.0 0.1 1660 776 ? S 12:40 0:00 CROND
root 7175 0.1 0.1 2036 964 ? SN 12:40 0:00 /bin/sh
/root/cbq/bin/collect
root 7178 0.5 0.1 1720 604 ? SN 12:40 0:00 tc -s class
show dev eth0
root 7179 0.0 0.0 1500 512 ? SN 12:40 0:00 grep -E (^
*class|^ *Sent)
root 7180 0.5 0.1 2036 984 ? SN 12:40 0:00 /bin/sh
/root/cbq/bin/collect
root 7249 0.0 0.1 1664 592 pts/6 S 12:40 0:00 script
log.load
root 7250 0.5 0.1 1668 616 pts/6 R 12:40 0:00 script
log.load
root 7251 2.5 0.2 2632 1420 pts/10 S 12:40 0:00 bash -i
root 7284 0.0 0.1 2304 704 ? RN 12:40 0:00
/usr/local/mrtg/bin//rateup /var/www/html/mrtg/cbq/ cbq-4398-pe
root 7291 0.0 0.1 2688 780 pts/10 R 12:40 0:00 ps axu
root 7292 0.0 0.1 2036 984 ? SN 12:40 0:00 /bin/sh
/root/cbq/bin/collect
root 7294 0.0 0.0 1560 288 ? RN 12:40 0:00 cut -b 3-




It is a Dual PIII 667 on a Dual VIA 694x Motherboard, the filesystems are
ext3 mounted, and we had a lot of problems with ext3 when reaching maximum
capacity ( after reboot had a lot of fatal errors ), but that seemed to
passed, and now we are getting this unusual load, plus the system is not
so reponsive.

Oh, btw the system does a lot of cbq ( which actually worked fine without
extra load in 2.2.x kernel series ).

What should I follow to discover what is the source of this load?


Teo


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