i am running the perfect debian setup (pretty much from the guide). The only differences is vhcs2 is running my virtual hosting. I don't have anything too funky running so i am wondering if this average of 3% all the time is quite high for a pentium 2.4ghz with 1gb of ram? ps aux tells me that root 4261 3.4 0.1 7300 1912 ? R Sep12 1114:16 /usr/sbin/saslauthd -m /var/spool/postfix/var/run/saslauthd -r -a rimap -O 127.0.0.1 root 4262 3.4 0.1 7300 1920 ? R Sep12 1119:30 /usr/sbin/saslauthd -m /var/spool/postfix/var/run/saslauthd -r -a rimap -O 127.0.0.1 www-data 15880 0.4 1.4 27680 15228 ? S 23:31 0:06 /usr/sbin/apache2 -k start -DSSL www-data 15916 0.3 1.5 28100 15680 ? S 23:31 0:05 /usr/sbin/apache2 -k start -DSSL www-data 16003 0.3 1.4 27656 15148 ? S 23:31 0:04 /usr/sbin/apache2 -k start -DSSL amavis 16056 0.0 3.0 34248 31644 ? S 23:35 0:00 amavisd (child) www-data 16661 0.5 1.4 27172 14680 ? S 23:46 0:03 /usr/sbin/apache2 -k start -DSSL www-data 16663 0.3 1.2 25576 12876 ? S 23:46 0:02 /usr/sbin/apache2 -k start -DSSL www-data 16686 0.3 1.2 25648 13136 ? S 23:48 0:01 /usr/sbin/apache2 -k start -DSSL www-data 16820 0.3 1.2 25608 13004 ? S 23:51 0:01 /usr/sbin/apache2 -k start -DSSL www-data 16821 0.3 1.1 24740 12308 ? S 23:51 0:00 /usr/sbin/apache2 -k start -DSSL www-data 16822 0.4 1.2 25600 13044 ? S 23:51 0:01 /usr/sbin/apache2 -k start -DSSL www-data 16945 0.4 1.1 24732 12064 ? S 23:54 0:00 /usr/sbin/apache2 -k start -DSSL www-data 16976 0.6 1.3 26032 13384 ? S 23:55 0:00 /usr/sbin/apache2 -k start -DSSL www-data 16991 0.5 1.1 24540 11860 ? S 23:55 0:00 /usr/sbin/apache2 -k start -DSSL these are the main processes. Also, my system ram only ever has about 20mb free? Is this efficient use of ram , i.e using ALL the ram or is it quite high too? the server seems to be running ok though.
Linux tries to allocate as much as making sense and buffers many things. For you it looks like the ram is completely used... (more: cat /proc/meminfo)
in my eyes 3% is not very high, but you have to distinguish load from cpuusage. Next thing is, what applications are running on your server and the intensity they are used... so you can't say a cpu usage of x percent is high or low without knowing what really happens on that machine (even saying there are some webpages doing some "simple" DB-requests is too imprecise...)
yeah thats why i pasted the output of ps aux and listed the things that seemed to be taking up the most processing time. You can see ther that saslauthd is taking up 3.4% all the time .
if i do a top command i get 3 processes for saslauthd under %cpu all 3 processes are over 30. the Cpu(s): reads 95-99% most of the time. IS this defintely ok?
Code: top - 17:57:23 up 26 days, 3:36, 1 user, load average: 3.54, 3.46, 3.38 Tasks: 78 total, 5 running, 73 sleeping, 0 stopped, 0 zombie Cpu(s): 95.4% us, 3.7% sy, 0.0% ni, 0.0% id, 0.0% wa, 0.5% hi, 0.5% si Mem: 1027912k total, 1014788k used, 13124k free, 72776k buffers Swap: 2096472k total, 0k used, 2096472k free, 695556k cached Unknown command - try 'h' for help PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 4264 root 25 0 7300 1916 6908 R 26.5 0.2 2797:44 saslauthd 4261 root 25 0 7300 1912 6908 R 23.8 0.2 2793:09 saslauthd 4262 root 25 0 7300 1920 6908 R 23.3 0.2 2798:22 saslauthd 19070 www-data 16 0 25800 12m 19m S 4.6 1.2 0:00.10 apache2 18998 www-data 15 0 25752 12m 19m S 4.1 1.3 0:00.36 apache2 18414 www-data 15 0 25680 12m 19m S 2.7 1.3 0:02.17 apache2 18500 www-data 15 0 25648 12m 19m S 2.7 1.3 0:01.60 apache2 18880 www-data 15 0 25688 12m 19m S 2.3 1.3 0:00.32 apache2 18833 www-data 15 0 25948 13m 19m S 1.8 1.3 0:00.53 apache2 18956 www-data 15 0 24816 11m 19m S 1.8 1.2 0:00.28 apache2 19043 www-data 15 0 24792 11m 19m S 1.8 1.2 0:00.10 apache2 17241 www-data 15 0 25840 12m 19m S 1.4 1.3 0:05.08 apache2 17986 www-data 15 0 25564 12m 19m S 1.4 1.3 0:02.68 apache2 28587 root 16 0 23608 10m 19m S 0.5 1.0 0:03.13 apache2 19057 root 16 0 2064 1056 1852 R 0.5 0.1 0:00.01 top 1 root 16 0 1504 512 1352 S 0.0 0.0 0:01.19 init 2 root RT 0 0 0 0 S 0.0 0.0 0:00.00 migration/0 3 root 34 19 0 0 0 S 0.0 0.0 0:00.02 ksoftirqd/0 4 root 5 -10 0 0 0 S 0.0 0.0 0:02.84 events/0 5 root 6 -10 0 0 0 S 0.0 0.0 0:00.00 khelper 6 root 15 -10 0 0 0 S 0.0 0.0 0:00.00 kacpid 37 root 5 -10 0 0 0 S 0.0 0.0 0:01.16 kblockd/0 49 root 15 0 0 0 0 S 0.0 0.0 0:10.96 kswapd0 50 root 5 -10 0 0 0 S 0.0 0.0 0:00.00 aio/0 186 root 25 0 0 0 0 S 0.0 0.0 0:00.00 kseriod 315 root 16 0 0 0 0 S 0.0 0.0 1:44.50 kjournald 1286 root 15 0 0 0 0 S 0.0 0.0 0:00.00 khubd 3946 root 16 0 2260 796 2092 S 0.0 0.1 0:30.36 syslogd 3949 root 16 0 2384 1492 1344 S 0.0 0.1 0:00.54 klogd 3967 amavis 16 0 33852 30m 5220 S 0.0 3.0 0:05.55 amavisd-new 3976 clamav 16 0 51504 31m 3812 S 0.0 3.1 3:11.42 clamd 4017 clamav 15 0 4244 1628 3888 S 0.0 0.2 0:02.77 freshclam 4051 root 19 0 1496 444 1344 S 0.0 0.0 0:00.00 inetd 4260 root 16 0 7300 1920 6908 S 0.0 0.2 0:00.01 saslauthd 4263 root 15 0 7300 1920 6908 S 0.0 0.2 0:00.01 saslauthd 4298 daemon 16 0 1684 628 1520 S 0.0 0.1 0:00.00 atd 4310 root 16 0 1492 468 1336 S 0.0 0.0 0:00.00 vhcs2_daemon 4341 root 16 0 1500 484 1336 S 0.0 0.0 0:00.00 getty 4347 root 16 0 1500 484 1336 S 0.0 0.0 0:00.00 getty 4348 root 16 0 1500 484 1336 S 0.0 0.0 0:00.00 getty 4349 root 16 0 1500 484 1336 S 0.0 0.0 0:00.00 getty 4350 root 16 0 1500 484 1336 S 0.0 0.0 0:00.00 getty 4356 root 16 0 1500 484 1336 S 0.0 0.0 0:00.00 getty 5192 root 15 0 2476 732 2164 S 0.0 0.1 0:00.04 couriertcpd 5194 root 15 0 1672 464 1360 S 0.0 0.0 0:00.03 courierlogger 5205 root 16 0 2476 732 2164 S 0.0 0.1 0:02.99 couriertcpd 5207 root 15 0 1672 464 1360 S 0.0 0.0 0:03.28 courierlogger 14981 root 25 0 3800 1332 3556 S 0.0 0.1 0:00.01 mysqld_safe here it is
Ok, your system load is not 3%, but more than 300%! 95.4% is too much. I guess there's a problem with your saslauthd. What's in your mail log?
Code: Oct 9 15:13:41 viking courierpop3login: Connection, ip=[::ffff:81.234.251.174] Oct 9 15:13:41 viking courierpop3login: LOGIN: DEBUG: ip=[::ffff:81.234.251.174], command=USER Oct 9 15:13:41 viking courierpop3login: LOGIN: DEBUG: ip=[::ffff:81.234.251.174], command=PASS Oct 9 15:13:41 viking courierpop3login: LOGIN: DEBUG: ip=[::ffff:81.234.251.174], [email protected] Oct 9 15:13:41 viking courierpop3login: authdaemon: starting client module Oct 9 15:13:41 viking courierpop3login: authdaemon: ACCEPT, username [email protected] Oct 9 15:13:41 viking courierpop3login: LOGIN, [email protected], ip=[::ffff:81.234.251.174] Oct 9 15:13:41 viking courierpop3login: LOGOUT, [email protected], ip=[::ffff:81.234.251.174], top=0, retr=0, time=0 Oct 9 15:13:41 viking courierpop3login: Connection, ip=[::ffff:81.234.251.174] Oct 9 15:13:41 viking courierpop3login: LOGIN: DEBUG: ip=[::ffff:81.234.251.174], command=USER Oct 9 15:13:41 viking courierpop3login: LOGIN: DEBUG: ip=[::ffff:81.234.251.174], command=PASS Oct 9 15:13:41 viking courierpop3login: LOGIN: DEBUG: ip=[::ffff:81.234.251.174], [email protected] i get alot of this. but other than that its just the general log of what goes in and out the mail system. urgh help! i've stopped the service and CPU went down to 0% and the load decreased. I've restarted it and will monitor it and see what happens. OK - 20 odd minutes later and it seems to have settled down. Even some ram has freed up. The cpu fluctuates depending on the apache2 load. Code: top - 15:44:46 up 27 days, 1:24, 1 user, load average: 0.08, 0.11, 0.66 Tasks: 79 total, 2 running, 77 sleeping, 0 stopped, 0 zombie Cpu(s): 15.2% us, 4.0% sy, 0.0% ni, 79.8% id, 0.7% wa, 0.0% hi, 0.3% si Mem: 1027912k total, 886476k used, 141436k free, 67696k buffers Swap: 2096472k total, 0k used, 2096472k free, 593604k cached
