Plesk v8.6.1 Memory issues and server becomes very unstable

[mdowner]

OS = FedoraCore 5
Plesk Ver. = 8.6.0
CPU AuthenticAMD, AMD Opteron(tm) Processor 248
Version psa v8.6.0_build86080910.19 os_FedoraCore 5
OS Linux 2.6.18-1.2257.fc5

System Uptime: 00:27

Load average
Last 1 minute 0.00
Last 5 minutes 0.03
Last 15 minutes 0.06

Memory UsageTotal Used Free Shared Buffer Cached Usage
1.96 GB 808.17 MB 1.17 GB 0 B 68.00 MB 379.56 MB 21.35%


Swap usageTotal Used Free
1.94 GB 0 B 1.94 GB




I have been running plesk for over a year now. After several recent updates from plesk, i noticed the servers health getting less and less stable. Plesk support has been horrible, takes forever to respond and their engineer see completely incompetent. The box has been no issue since it's inception until the last few plesk updates. The server has only 2gig ram, but that has never been an issue until the past few weeks. There seems to bee a memory leak that is not showing up in top. If I do not restart the server every few hours, eventually all services fail including SSH, so I have to power cycle the box (a very unhealthy shutdown).

I just booted again and top says I have 1402916k free. That will slowly decrease over time (sometime an hour sometimes several or up to 8 or so hours).

I leave top running with the "shift M" option and the only item hording memory is "gig" (tomcat) @ 6.3%. Nothing else seems to be growing in memory consumption but the free memory will dropped to 200k or less and then the system becomes very unstable, web pages load dog slow and email via pop on outlook takes forever to d/l or times out altogether. After a healthy reboot or an unhealthy power cycle everything is fine for awhile.



top - 20:10:13 up 2 min, 1 user, load average: 1.03, 0.49, 0.18
Tasks: 115 total, 1 running, 114 sleeping, 0 stopped, 0 zombie
Cpu(s): 0.0%us, 0.0%sy, 0.0%ni,100.0%id, 0.0%wa, 0.0%hi, 0.0%si, 0.0%st
Mem: 2055940k total, 653024k used, 1402916k free, 21960k buffers
Swap: 2031608k total, 0k used, 2031608k free, 308668k cached

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2869 tomcat 16 0 708m 125m 34m S 0.0 6.3 0:08.16 gij
2184 root 15 0 116m 36m 2344 S 0.0 1.8 0:00.42 spamd
2185 popuser 18 0 116m 36m 1236 S 0.0 1.8 0:00.01 spamd
1987 mysql 15 0 160m 28m 5068 S 0.0 1.4 0:00.15 mysqld
2910 root 18 0 167m 18m 8600 S 0.0 0.9 0:00.16 httpd
2951 psaadm 17 0 148m 15m 10m S 0.0 0.8 0:00.21 httpsd
2928 apache 16 0 167m 13m 3340 S 0.0 0.7 0:00.00 httpd
2927 apache 18 0 167m 11m 1664 S 0.0 0.6 0:00.00 httpd
3353 apache 18 0 167m 11m 1116 S 0.0 0.6 0:00.00 httpd
2929 apache 18 0 167m 11m 1104 S 0.0 0.6 0:00.00 httpd
2931 apache 25 0 167m 11m 1104 S 0.0 0.6 0:00.00 httpd
3288 mailman 18 0 101m 9888 3072 S 0.0 0.5 0:00.10 python
3287 mailman 18 0 101m 9840 3072 S 0.0 0.5 0:00.11 python
3283 mailman 18 0 101m 9812 3072 S 0.0 0.5 0:00.10 python
3284 mailman 18 0 101m 9808 3072 S 0.0 0.5 0:00.10 python
3289 mailman 18 0 101m 9796 3072 S 0.0 0.5 0:00.10 python
3235 root 15 0 108m 9792 5620 S 0.0 0.5 0:00.05 wdcollect
3282 mailman 18 0 101m 9792 3072 S 0.0 0.5 0:00.10 python
3285 mailman 18 0 101m 9792 3072 S 0.0 0.5 0:00.10 python
3290 mailman 24 0 101m 9788 3072 S 0.0 0.5 0:00.10 python
2942 root 18 0 97792 8492 4560 S 0.0 0.4 0:00.02 httpsd
2922 apache 18 0 128m 7704 728 S 0.0 0.4 0:00.00 httpd
3202 mailman 20 0 100m 7356 660 S 0.0 0.4 0:00.00 python
1842 root 15 0 102m 6824 1220 S 0.0 0.3 0:00.00 python
3293 psaadm 18 0 97792 5156 1224 S 0.0 0.3 0:00.00 httpsd
1890 ntp 15 0 14056 4908 3796 S 0.0 0.2 0:00.00 ntpd
2058 postgres 18 0 92168 3536 3104 S 0.0 0.2 0:00.08 postmaster
3286 root 16 0 46340 3484 2660 S 0.0 0.2 0:00.01 sshd
1568 named 22 0 51720 3476 2032 S 0.0 0.2 0:00.05 named
3147 haldaemo 15 0 14624 3312 1720 S 0.0 0.2 0:00.99 hald
3067 root 20 0 95468 2860 1636 S 0.0 0.1 0:00.00 smbd
3236 root 15 0 30776 2592 2080 S 0.0 0.1 0:00.04 monit
1852 root 15 0 89540 2432 1552 S 0.0 0.1 0:00.00 cupsd
3333 root 18 0 94200 2384 1772 S 0.0 0.1 0:00.00 su
3307 mdowner 15 0 46340 2156 1316 S 0.0 0.1 0:00.00 sshd
3334 root 15 0 59828 1620 1204 S 0.0 0.1 0:00.02 bash
3308 mdowner 16 0 59828 1592 1228 S 0.0 0.1 0:00.02 bash
3102 root 20 0 95468 1520 296 S 0.0 0.1 0:00.00 smbd
3075 root 15 0 79272 1492 932 S 0.0 0.1 0:00.00 nmbd
3126 avahi 15 0 14276 1488 1248 S 0.0 0.1 0:00.00 avahi-daemon
1951 root 25 0 59696 1316 1100 S 0.0 0.1 0:00.01 mysqld_safe
1864 root 18 0 25704 1264 808 S 0.0 0.1 0:00.00 sshd
2997 root 15 0 65500 1168 584 S 0.0 0.1 0:00.40 crond
447 root 21 -4 8796 1120 380 S 0.0 0.1 0:01.70 udevd
3354 root 15 0 7452 1084 808 R 0.0 0.1 0:00.10 top
3151 root 22 0 9344 1016 864 S 0.0 0.0 0:00.02 hald-runner
2093 root 18 0 19720 984 800 S 0.0 0.0 0:00.00 couriertcpd
2101 root 18 0 19724 984 800 S 0.0 0.0 0:00.00 couriertcpd
2083 root 18 0 19720 980 800 S 0.0 0.0 0:00.00 couriertcpd
2110 root 17 0 19720 980 800 S 0.0 0.0 0:00.00 couriertcpd
2062 postgres 15 0 92168 920 484 S 0.0 0.0 0:00.00 postmaster
1677 dbus 15 0 12280 900 704 S 0.0 0.0 0:00.00 dbus-daemon
3172 haldaemo 22 0 7392 888 780 S 0.0 0.0 0:00.00 hald-addon-acpi
1874 root 23 0 8864 856 668 S 0.0 0.0 0:00.00 xinetd
2064 postgres 21 0 81480 812 252 S 0.0 0.0 0:00.00 postmaster
1805 root 18 0 10164 752 604 S 0.0 0.0 0:00.00 automount
1633 rpcuser 25 0 4916 748 620 S 0.0 0.0 0:00.00 rpc.statd
3190 root 18 0 6328 732 636 S 0.0 0.0 0:00.00 hald-addon-stor
1663 root 18 0 23412 720 316 S 0.0 0.0 0:00.00 rpc.idmapd
2085 root 18 0 15496 716 572 S 0.0 0.0 0:00.00 courierlogger

 

[breun]

I don't know what the exact problem is, but I'd start by migrating to a distribution that is still supported with updates. Fedora Core 5 reached end of life June 29th, 2007.

 

[mdowner]

I don't know what the exact problem is, but I'd start by migrating to a distribution that is still supported with updates. Fedora Core 5 reached end of life June 29th, 2007.

Yeah the think that makes no sense about that is support is still supporting the box and they know the OS I have and said it's fine. Even so more confusing is that you can download the Plesk 9.0 Demo and it lists Fedora Core 5 ( http://www.parallels.com/download/plesk9beta/#fc )as a build option. Actually they still list Fedora Core 4.0!!

I never understand what the engineers/marketing folks are doing. Very little consistancy........

-matt

 

[ziba@]

Hi,

Does server freeze if you stop tomcat? How many domains and mailboxes do you have running on this server?
Also you can try to find time when downtime is not critical and stop services like psa,psa-spamassassin,qmail and so on to see what service causes this. This could narrow search field.