What is my server doing? (server is idling, but there is i/o activity)
I got new server, I installed few things on that (mrtg, apf, etc) and also tuned up sysctl.conf as it is in http://www.webhostingtalk.com/showth...hreadid=257654
I have noticed that there is some activity on the server in i/o wait. Is that normal?
18:26:22 up 9:52, 2 users, load average: 0.00, 0.00, 0.00
131 processes: 130 sleeping, 1 running, 0 zombie, 0 stopped
CPU states: cpu user nice system irq softirq iowait idle
total 0.4% 0.0% 0.0% 0.0% 0.0% 3.4% 96.0%
cpu00 1.9% 0.0% 0.0% 0.0% 0.0% 4.9% 93.0%
cpu01 0.0% 0.0% 0.0% 0.0% 0.0% 1.9% 98.0%
cpu02 0.0% 0.0% 0.0% 0.0% 0.0% 4.9% 95.0%
cpu03 0.0% 0.0% 0.0% 0.0% 0.0% 1.9% 98.0%
Mem: 2061576k av, 671524k used, 1390052k free, 0k shrd, 81468k buff
300112k active, 157572k inactive
Swap: 2040212k av, 0k used, 2040212k free 412472k cached
PID USER PRI NI SIZE RSS SHARE STAT %CPU %MEM TIME CPU COMMAND
30263 root 15 0 1300 1300 916 R 0.4 0.0 0:00 0 top
1 root 15 0 512 512 452 S 0.0 0.0 0:05 0 init
2 root RT 0 0 0 0 SW 0.0 0.0 0:00 0 migration/0
3 root RT 0 0 0 0 SW 0.0 0.0 0:00 1 migration/1
4 root RT 0 0 0 0 SW 0.0 0.0 0:00 2 migration/2
5 root RT 0 0 0 0 SW 0.0 0.0 0:00 3 migration/3
6 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 keventd
7 root 39 19 0 0 0 SWN 0.0 0.0 0:00 0 ksoftirqd/0
8 root 34 19 0 0 0 SWN 0.0 0.0 0:00 1 ksoftirqd/1
9 root 34 19 0 0 0 SWN 0.0 0.0 0:00 2 ksoftirqd/2
10 root 34 19 0 0 0 SWN 0.0 0.0 0:00 3 ksoftirqd/3
13 root 25 0 0 0 0 SW 0.0 0.0 0:00 2 bdflush
11 root 15 0 0 0 0 SW 0.0 0.0 0:00 1 kswapd
12 root 15 0 0 0 0 SW 0.0 0.0 0:00 1 kscand
14 root 15 0 0 0 0 SW 0.0 0.0 0:01 1 kupdated
15 root 25 0 0 0 0 SW 0.0 0.0 0:00 2 mdrecoveryd
24 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kjournald
79 root 25 0 0 0 0 SW 0.0 0.0 0:00 1 khubd
158 root 25 0 0 0 0 SW 0.0 0.0 0:00 0 kjournald
159 root 15 0 0 0 0 SW 0.0 0.0 0:00 0 kjournald
160 root 15 0 0 0 0 SW 0.0 0.0 0:00 3 kjournald
161 root 15 0 0 0 0 SW 0.0 0.0 0:00 2 kjournald
162 root 15 0 0 0 0 SW 0.0 0.0 0:01 2 kjournald
163 root 15 0 0 0 0 SW 0.0 0.0 0:00 3 kjournald
1394 root 15 0 588 588 508 S 0.0 0.0 0:00 0 syslogd
1398 root 15 0 472 472 412 S 0.0 0.0 0:00 0 klogd
1408 root 15 0 452 452 388 S 0.0 0.0 0:01 3 irqbalance
2038 root 16 0 1588 1588 **** S 0.0 0.0 0:00 2 sshd
2052 root 15 0 840 840 732 S 0.0 0.0 0:00 2 xinetd
2071 root 20 0 2732 2732 1456 S 0.0 0.1 0:00 2 chkservd
2123 mailnull 15 0 1816 1816 1492 S 0.0 0.0 0:00 2 exim
2127 mailnull 25 0 1756 1756 1444 S 0.0 0.0 0:00 1 exim
2134 root 15 0 1412 1412 1168 S 0.0 0.0 0:01 0 antirelayd
Linux#/etc/mrtg>ps aux
USER PID %CPU %MEM VSZ RSS TTY STAT START TIME COMMAND
root 1 0.0 0.0 1520 512 ? S 08:33 0:05 init
root 2 0.0 0.0 0 0 ? SW 08:33 0:00 [migration/0]
root 3 0.0 0.0 0 0 ? SW 08:33 0:00 [migration/1]
root 4 0.0 0.0 0 0 ? SW 08:33 0:00 [migration/2]
root 5 0.0 0.0 0 0 ? SW 08:33 0:00 [migration/3]
root 6 0.0 0.0 0 0 ? SW 08:33 0:00 [keventd]
root 7 0.0 0.0 0 0 ? SWN 08:33 0:00 [ksoftirqd/0]
root 8 0.0 0.0 0 0 ? SWN 08:33 0:00 [ksoftirqd/1]
root 9 0.0 0.0 0 0 ? SWN 08:33 0:00 [ksoftirqd/2]
root 10 0.0 0.0 0 0 ? SWN 08:33 0:00 [ksoftirqd/3]
root 13 0.0 0.0 0 0 ? SW 08:33 0:00 [bdflush]
root 11 0.0 0.0 0 0 ? SW 08:33 0:00 [kswapd]
root 12 0.0 0.0 0 0 ? SW 08:33 0:00 [kscand]
root 14 0.0 0.0 0 0 ? SW 08:33 0:01 [kupdated]
root 15 0.0 0.0 0 0 ? SW 08:33 0:00 [mdrecoveryd]
root 24 0.0 0.0 0 0 ? SW 08:33 0:00 [kjournald]
root 79 0.0 0.0 0 0 ? SW 08:33 0:00 [khubd]
root 158 0.0 0.0 0 0 ? SW 08:33 0:00 [kjournald]
root 159 0.0 0.0 0 0 ? SW 08:33 0:00 [kjournald]
root 160 0.0 0.0 0 0 ? SW 08:33 0:00 [kjournald]
root 161 0.0 0.0 0 0 ? SW 08:33 0:00 [kjournald]
root 162 0.0 0.0 0 0 ? SW 08:33 0:01 [kjournald]
root 163 0.0 0.0 0 0 ? SW 08:33 0:00 [kjournald]
root 1394 0.0 0.0 1588 588 ? S 08:34 0:00 syslogd -m 0
root 1398 0.0 0.0 1516 472 ? S 08:34 0:00 klogd -x
root 1408 0.0 0.0 1512 452 ? S 08:34 0:01 irqbalance
root 2038 0.0 0.0 3656 1588 ? S 08:34 0:00 /usr/sbin/sshd
root 2052 0.0 0.0 2132 840 ? S 08:34 0:00 xinetd -stayalive -pidfile /var/run/xinetd.pid
root 2071 0.0 0.1 6100 2732 ? S 08:34 0:00 chkservd
mailnull 2123 0.0 0.0 6316 1816 ? S 08:34 0:00 /usr/sbin/exim -bd -q60m
mailnull 2127 0.0 0.0 6288 1756 ? S 08:34 0:00 /usr/sbin/exim -tls-on-connect -bd -oX 465
root 2134 0.0 0.0 2972 1412 ? S 08:34 0:01 antirelayd
root 2145 0.0 0.8 20604 18328 ? S 08:34 0:00 /usr/bin/spamd -d
bin 2155 0.0 0.0 2096 1096 ? S 08:34 0:00 /usr/sbin/cannaserver -syslog -u bin
root 2245 0.0 0.0 1572 640 ? S 08:34 0:00 crond
wnn 2256 0.0 0.1 5272 4008 ? S 08:34 0:00 /usr/bin/jserver
root 2264 0.0 0.0 4256 1172 ? S 08:34 0:00 /bin/sh /usr/bin/mysqld_safe --datadir=/var/lib/mysql --pid-file=/var
mysql 2318 0.0 0.5 31996 11256 ? S 08:34 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --
mysql 2323 0.0 0.5 31996 11256 ? S 08:34 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --
mysql 2324 0.0 0.5 31996 11256 ? S 08:34 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --
mysql 2325 0.0 0.5 31996 11256 ? S 08:34 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --
mysql 2326 0.0 0.5 31996 11256 ? S 08:34 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --
mysql 2327 0.0 0.5 31996 11256 ? S 08:34 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --
mysql 2328 0.0 0.5 31996 11256 ? S 08:34 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --
mysql 2329 0.0 0.5 31996 11256 ? S 08:34 0:05 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --
mysql 2330 0.0 0.5 31996 11256 ? S 08:34 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --
mysql 2331 0.0 0.5 31996 11256 ? S 08:34 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --
root 2405 0.0 0.0 3552 584 ? S 08:34 0:00 rhnsd --interval 240
root 2417 0.0 0.1 6100 2588 ? S 08:34 0:00 /usr/bin/perl /usr/local/bin/ipalert_statd
root 2451 0.0 0.0 1544 500 ? S 08:34 0:00 /usr/sbin/portsentry -tcp
root 2479 0.0 0.0 1580 404 ? S 08:34 0:00 mdadm --monitor --scan
root 2490 0.0 0.5 12164 12160 ? SL 08:34 0:00 mdmpd
root 2497 0.0 0.0 1508 432 tty1 S 08:34 0:00 /sbin/mingetty tty1
root 2498 0.0 0.0 1512 432 tty2 S 08:34 0:00 /sbin/mingetty tty2
root 2499 0.0 0.0 1508 432 tty3 S 08:34 0:00 /sbin/mingetty tty3
root 2500 0.0 0.0 1508 424 tty4 S 08:34 0:00 /sbin/mingetty tty4
root 2501 0.0 0.0 1504 424 tty5 S 08:34 0:00 /sbin/mingetty tty5
root 2502 0.0 0.0 1512 428 tty6 S 08:34 0:00 /sbin/mingetty tty6
nobody 2537 0.0 0.0 4268 2060 ? S 08:34 0:00 proftpd: (accepting connections)
named 3778 0.0 0.1 68808 3304 ? S 09:04 0:00 /usr/sbin/named -u named
root 21393 0.0 0.1 6852 2072 ? S 16:19 0:00 sshd: wer [priv]
wer 21395 0.0 0.1 6864 2284 ? S 16:19 0:01 sshd: wer@pts/0
wer 21396 0.0 0.0 4820 1600 pts/0 S 16:19 0:00 -tcsh
root 21420 0.0 0.0 4220 992 pts/0 S 16:19 0:00 su -m
root 21421 0.0 0.0 4820 1616 pts/0 S 16:19 0:00 -csh
root 21455 0.0 0.1 6852 2072 ? S 16:19 0:00 sshd: wer [priv]
wer 21457 0.0 0.1 6864 2284 ? S 16:19 0:00 sshd: wer@pts/2
wer 21458 0.0 0.0 4824 1608 pts/2 S 16:19 0:00 -tcsh
root 23538 0.0 0.0 4228 996 pts/2 S 17:00 0:00 su -m
root 23539 0.0 0.0 4956 1760 pts/2 S 17:00 0:00 -csh
root 23911 0.0 0.2 9736 4184 ? S 17:03 0:00 /usr/local/apache/bin/httpd -DSSL
mailnull 23972 0.0 0.1 5604 4028 pts/2 S 17:03 0:00 /usr/bin/perl /usr/local/cpanel/bin/eximstats
mysql 23973 0.0 0.5 31996 11256 ? S 17:03 0:00 /usr/sbin/mysqld --basedir=/ --datadir=/var/lib/mysql --user=mysql --
root 23990 0.0 0.2 7244 5796 pts/2 S 17:03 0:00 cpsrvd - waiting for connections
root 24001 0.0 0.2 6896 5276 pts/2 SN 17:03 0:00 cpanellogd - sleeping for logs
root 24008 0.0 0.2 6068 4720 pts/2 S 17:03 0:00 cppop - accepting on port 110
nobody 24012 0.0 0.1 3444 2100 pts/2 S 17:03 0:00 entropychat
nobody 24016 0.0 0.0 1736 620 pts/2 S 17:03 0:00 /usr/local/cpanel/bin/startmelange
cpanel 24039 0.0 0.0 24272 2016 ? S 17:03 0:00 /usr/bin/stunnel-4.04local /usr/local/cpanel/etc/stunnel/default/stun
mailman 24043 0.0 0.2 7224 4780 ? S 17:03 0:00 /usr/bin/python2 /usr/local/cpanel/3rdparty/mailman/bin/mailmanctl -s
mailman 24044 0.0 0.2 7168 4712 ? S 17:03 0:00 /usr/bin/python2 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --run
mailman 24045 0.0 0.2 7136 4728 ? S 17:03 0:01 /usr/bin/python2 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --run
mailman 24046 0.0 0.2 7148 4724 ? S 17:03 0:01 /usr/bin/python2 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --run
mailman 24047 0.0 0.2 7180 4720 ? S 17:03 0:01 /usr/bin/python2 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --run
mailman 24048 0.0 0.2 7224 4760 ? S 17:03 0:00 /usr/bin/python2 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --run
mailman 24049 0.0 0.2 7284 4804 ? S 17:03 0:00 /usr/bin/python2 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --run
mailman 24050 0.0 0.2 7184 4716 ? S 17:03 0:00 /usr/bin/python2 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --run
mailman 24051 0.0 0.2 7176 4716 ? S 17:03 0:00 /usr/bin/python2 /usr/local/cpanel/3rdparty/mailman/bin/qrunner --run
nobody 26392 0.0 0.2 9736 4316 ? S 17:18 0:00 /usr/local/apache/bin/httpd -DSSL
nobody 26393 0.0 0.2 9736 4316 ? S 17:18 0:00 /usr/local/apache/bin/httpd -DSSL
nobody 26394 0.0 0.2 9736 4316 ? S 17:18 0:00 /usr/local/apache/bin/httpd -DSSL
nobody 26395 0.0 0.2 9736 4316 ? S 17:18 0:00 /usr/local/apache/bin/httpd -DSSL
nobody 26396 0.0 0.2 9736 4316 ? S 17:18 0:00 /usr/local/apache/bin/httpd -DSSL
root 26415 0.0 0.3 10064 6676 ? S 17:18 0:01 /usr/local/bin/perl /usr/bin/mrtg /etc/mrtg/mrtg.cfg
nobody 26661 0.0 0.2 9736 4320 ? S 17:18 0:00 /usr/local/apache/bin/httpd -DSSL
nobody 26662 0.0 0.2 9736 4320 ? S 17:18 0:00 /usr/local/apache/bin/httpd -DSSL
nobody 26663 0.0 0.2 9736 4320 ? S 17:18 0:00 /usr/local/apache/bin/httpd -DSSL
nobody 26693 0.0 0.2 9736 4320 ? S 17:22 0:00 /usr/local/apache/bin/httpd -DSSL
root 26996 0.0 0.0 3876 608 pts/2 S 17:26 0:00 tail -f /var/log/messages
nobody 30273 0.0 0.1 4532 2524 ? S 18:26 0:00 proftpd: connected: localhost (127.0.0.1:36049)
root 30540 0.0 0.0 2864 868 pts/0 R 18:30 0:00 ps aux
