Re: Memory leak and deep swap upon the restart?
In the last episode (Mar 15), Abdullah Ibn Hamad Al-Marri said: > Hello, > > I have a webmail server, has apache 2.2.4, mysql 5.0.33, php 5.2.1, > clamav, mailscanner ..etc. > > The weird issue it goes into deep swap when it starts or I restart it. > *sigh* > This happened since like 6 months I don't know why? it was okay before that. > > here is the top info > > last pid: 790; load averages: 0.00, 0.06, 0.05 up 0+00:06:50 03:51:28 > 69 processes: 1 running, 68 sleeping > CPU states: 0.0% user, 0.0% nice, 0.4% system, 0.0% interrupt, 99.6% idle > Mem: 323M Active, 91M Inact, 56M Wired, 27M Cache, 52M Buf, 988K Free > Swap: 2048M Total, 104M Used, 1944M Free, 5% Inuse Right now you're only showing 100M of swap being used; that looks fine, as long as it's not being accessed constantly (watch for "##K in, ##K out" to appear on the Swap: line, or watch the "pi" and "po" columns of "vmstat 5"). If you see constant swap activity, that means you'll need to reduce the number of worker processes for your multiprocess daemons (from your ps output, that means apache, amavisd amd MailScanner), move some processes to another machine, or add RAM. > Here is the ps -aux output > > mail# ps -aux > USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND > vscan 482 0.0 0.0 46472 0 ?? IW - 0:00.00 amavisd > (virgin child) (perl5.8.8) > vscan 483 0.0 0.0 46472 0 ?? IW - 0:00.00 amavisd > (virgin child) (perl5.8.8) You have a bunch of amavisd processes that are completely swapped out (0 RSS) and have never consumed any CPU (TIME column). This probably means that you could safely reduce the number of worker processes since they're never used. Also, the MailScanner process is pretty big; maybe there are some settings you can change to make it use less. -- Dan Nelson [EMAIL PROTECTED] ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
Re: Memory leak and deep swap upon the restart?
On Thu, Mar 15, 2007 at 06:55:24AM +0300, Abdullah Ibn Hamad Al-Marri wrote: > Hello, > > I have a webmail server, has apache 2.2.4, mysql 5.0.33, php 5.2.1, > clamav, mailscanner ..etc. > > The weird issue it goes into deep swap when it starts or I restart it. > *sigh* > This happened since like 6 months I don't know why? it was okay before that. Your running processes are trying to use more memory than is present in your system, so swapping is the only possibility. Look at the "VSZ" column (virtual size) to see how overloaded your system is. > USER PID %CPU %MEM VSZ RSS TT STAT STARTED TIME COMMAND > vscan 449 0.0 0.7 45840 3520 ?? Ss3:45AM 0:00.48 > amavisd (master) (perl5.8.8) > root 474 0.0 10.9 61788 56864 ?? Ss3:45AM 0:02.95 > /usr/local/bin/spamd -c -Q -d -r /var/run/spamd/spamd.pid (perl5.8 > vscan 482 0.0 0.0 46472 0 ?? IW - 0:00.00 > amavisd (virgin child) (perl5.8.8) > vscan 483 0.0 0.0 46472 0 ?? IW - 0:00.00 > amavisd (virgin child) (perl5.8.8) > vscan 484 0.0 0.0 46472 0 ?? IW - 0:00.00 > amavisd (virgin child) (perl5.8.8) > vscan 485 0.0 0.0 46472 0 ?? IW - 0:00.00 > amavisd (virgin child) (perl5.8.8) > vscan 486 0.0 0.0 46472 0 ?? IW - 0:00.00 > amavisd (virgin child) (perl5.8.8) > vscan 487 0.0 0.0 46472 0 ?? IW - 0:00.00 > amavisd (virgin child) (perl5.8.8) > vscan 488 0.0 0.0 46472 0 ?? IW - 0:00.00 > amavisd (virgin child) (perl5.8.8) > vscan 489 0.0 0.0 46472 0 ?? IW - 0:00.00 > amavisd (virgin child) (perl5.8.8) > root 646 0.0 0.7 61788 3428 ?? I 3:45AM 0:00.01 spamd > child (perl5.8.8) > root 647 0.0 0.3 61788 1424 ?? I 3:45AM 0:00.00 spamd > child (perl5.8.8) > postfix649 0.0 0.2 18916 1180 ?? Is3:45AM 0:00.01 > MailScanner: master waiting for children, sleeping (perl5.8.8) > postfix650 0.0 0.5 79972 2464 ?? S 3:45AM 0:03.10 > MailScanner: waiting for messages (perl5.8.8) > root 667 0.0 1.3 49788 6732 ?? Ss3:45AM 0:00.18 > /usr/local/sbin/httpd > www742 0.0 0.0 49864 0 ?? IW - 0:00.00 > /usr/local/sbin/httpd > www763 0.0 1.3 50704 6980 ?? I 3:45AM 0:00.02 > /usr/local/sbin/httpd > www765 0.0 2.0 52184 10140 ?? I 3:45AM 0:00.31 > /usr/local/sbin/httpd > www766 0.0 0.7 49856 3476 ?? I 3:45AM 0:00.01 > /usr/local/sbin/httpd > www767 0.0 0.7 49856 3476 ?? I 3:45AM 0:00.00 > /usr/local/sbin/httpd > www768 0.0 0.7 49856 3476 ?? I 3:45AM 0:00.01 > /usr/local/sbin/httpd > www769 0.0 2.1 50836 10788 ?? I 3:45AM 0:00.07 > /usr/local/sbin/httpd > www770 0.0 2.3 50936 12172 ?? I 3:45AM 0:00.21 > /usr/local/sbin/httpd > www771 0.0 0.0 49816 0 ?? IW - 0:00.00 > /usr/local/sbin/httpd > www772 0.0 0.0 49816 0 ?? IW - 0:00.00 > /usr/local/sbin/httpd > www773 0.0 0.0 49816 0 ?? IW - 0:00.00 > /usr/local/sbin/httpd > postfix774 0.0 0.3 79972 1600 ?? S 3:45AM 0:03.05 > MailScanner: waiting for messages (perl5.8.8) > postfix775 0.0 0.3 79972 1792 ?? S 3:45AM 0:03.05 > MailScanner: waiting for messages (perl5.8.8) > postfix776 0.0 0.3 79972 1376 ?? S 3:45AM 0:03.05 > MailScanner: waiting for messages (perl5.8.8) > postfix777 0.0 14.4 79972 74812 ?? S 3:45AM 0:03.15 > MailScanner: waiting for messages (perl5.8.8) > mysql 518 0.0 3.7 51508 19184 con- I 3:45AM 0:00.23 > /usr/local/libexec/mysqld --defaults-extra-file=/var/db/mysql/my.c Kris ___ freebsd-questions@freebsd.org mailing list http://lists.freebsd.org/mailman/listinfo/freebsd-questions To unsubscribe, send any mail to "[EMAIL PROTECTED]"
