Today BizHat.com server crashed with out any reason. After rebooting found the server load too high.

10:36:45 up 3:22, 1 user, load average: 13.44, 12.99, 11.64

161 processes: 143 sleeping, 14 running, 3 zombie, 1 stopped

CPU states: cpu user nice system irq softirq iowait idle

total 194.6% 0.0% 3.6% 0.0% 0.2% 0.0% 1.0%

cpu00 98.4% 0.0% 0.9% 0.1% 0.3% 0.0% 0.0%

cpu01 96.2% 0.0% 2.7% 0.0% 0.0% 0.0% 0.9%

Mem: 1000772k av, 964904k used, 35868k free, 0k shrd, 94668k buff

397532k active, 422624k inactive

Swap: 2096440k av, 48k used, 2096392k free 627512k cached

PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND

27616 root 25 0 1516 448 1352 R 18.1 0.0 15:05 1 sadc

31070 root 25 0 1516 448 1352 R 16.1 0.0 38:49 0 sadc

19843 root 25 0 1512 444 1352 R 16.1 0.0 18:48 1 sadc

15733 root 25 0 1520 452 1352 R 16.1 0.0 6:52 1 sadc

24981 root 25 0 1516 448 1352 R 15.9 0.0 49:31 0 sadc

22411 root 25 0 1516 448 1352 R 15.9 0.0 4:36 1 sadc

28613 root 25 0 1512 444 1352 R 15.9 0.0 2:47 1 sadc

2991 root 25 0 1520 452 1352 R 15.9 0.0 1:02 0 sadc

2221 root 25 0 1520 452 1352 R 15.1 0.0 11:58 0 sadc

13076 root 25 0 1516 448 1352 R 14.7 0.0 23:29 1 sadc

3267 root 25 0 1512 444 1352 R 14.1 0.0 29:34 0 sadc

11301 root 25 0 1516 448 1352 R 13.9 0.0 9:12 0 sadc

8205 bizhatc 15 0 0 0 0 Z 4.9 0.0 0:00 0 php

8126 root 17 0 5228 1216 4892 R 1.7 0.1 0:00 1 top

7420 root 17 0 2116 1032 1932 S 0.1 0.1 0:00 1 prm

1 root 16 0 1504 512 1356 S 0.0 0.0 0:00 1 init

2 root RT 0 0 0 0 SW 0.0 0.0 0:00 0 migration/0

3 root 34 19 0 0 0 SWN 0.0 0.0 0:00 0 ksoftirqd/0

4 root RT 0 0 0 0 SW 0.0 0.0 0:00 1 migration/1

5 root 34 19 0 0 0 SWN 0.0 0.0 0:00 1 ksoftirqd/1

6 root 5 -10 0 0 0 SW< 0.0 0.0 0:00 0 events/0
7 root 5 -10 0 0 0 SW< 0.0 0.0 0:00 1 events/1
8 root 5 -10 0 0 0 SW< 0.0 0.0 0:00 1 khelper


Too many sadc process running, taking up too much CPU time.

Also start getting CPU Heating Warding.

[root@server10 root]#

Message from syslogd@server10 at Tue Sep 21 11:01:37 2004 …

server10 kernel: CPU0: Temperature above threshold

Message from syslogd@server10 at Tue Sep 21 11:01:37 2004 …

server10 kernel: CPU1: Temperature above threshold



Its found that sadc is run by cron every 10 mints and is not important process.

The process is removed

mkdir /root/backup

mv /etc/cron.d/sysstat /root/backup/



After rebooting the server load become normal and no CPU heating warning.

load average: 0.48, 0.49, 0.21