open3: fork failed: Cannot allocate memory at cpsrvd-ssl.pl line 4852

[Ahmed Saleh]

Hello ,
i have a problem on my VPS , many times i have an Internal server error 500
and this message show on the WHM :

open3: fork failed: Cannot allocate memory at cpsrvd-ssl.pl line 4852

Please provide me about the reason and how can i solve it .

the load avg is : Load Averages: 0.32 0.38 0.39
and the memory usage is : about (12% to 15%) 4 G.B or ram .

and this is a print screen from HyperVM explain the memory usage on my VPS :
http://img262.imageshack.us/img262/7407/memory.gif

I'M WAITING YOUR HELP !

[cPanelDon]

Hello ,
i have a problem on my VPS , many times i have an Internal server error 500
and this message show on the WHM :

Please provide me about the reason and how can i solve it .

the load avg is : Load Averages: 0.32 0.38 0.39
and the memory usage is : about (12% to 15%) 4 G.B or ram .

and this is a print screen from HyperVM explain the memory usage on my VPS :
http://img262.imageshack.us/img262/7407/memory.gif

I'M WAITING YOUR HELP !

Via root SSH access, please let us know the output from the following commands:

# grep -H '' /etc/*release /usr/local/cpanel/version /var/cpanel/envtype
# grep "conserve_memory\|enable_cpansqlite\|maxmem" /var/cpanel/cpanel.config
# cat /proc/user_beancounters

[LAZer]

hi i have the same problem , here is what u wanted.
i get internal server error every time i want to do something.

/etc/redhat-release:CentOS release 5.4 (Final)
/usr/local/cpanel/version:11.25.0-RELEASE_42404
/var/cpanel/envtype:virtuozzo


conserve_memory=1
enable_cpansqlite=0
maxmem=256


Version: 2.5
uid resource held maxheld barrier limit failcnt
290: kmemsize 12507682 23472746 214 7483646 2147483646 0
lockedpages 0 0 999999 999999 0
privvmpages 777254 786711 786432 786432 595
shmpages 2940 26039 262144 262144 0
dummy 0 0 0 0 0
numproc 204 215 999999 999999 0
physpages 36860 59636 0 2147483647 0
vmguarpages 0 0 262144 2147483647 0
oomguarpages 36861 59636 262144 2147483647 0
numtcpsock 107 498 7999992 7999992 0
numflock 9 14 999999 999999 0
numpty 2 2 500000 500000 0
numsiginfo 0 158 999999 999999 0
tcpsndbuf 6749504 18038512 21 4748160 396774400 0
tcprcvbuf 1760048 8802208 21 4748160 396774400 0
othersockbuf 40976 250752 21 4748160 396774400 0
dgramrcvbuf 0 78624 21 4748160 396774400 0
numothersock 42 75 7999992 7999992 0
dcachesize 0 0 214 7483646 2147483646 0
numfile 3477 3992 2 3999976 23999976 0
dummy 0 0 0 0 0
dummy 0 0 0 0 0
dummy 0 0 0 0 0
numiptent 33 33 999999 999999 0


well , what should i do ? i have configured apache with easyapache. and i have activated worker,fcgi,cgi,curl,ioncube,zend &...

thanks in advanced

[madaboutlinux]

Try increasing memory for cPanel from WHM >> "Tweak Settings" and see if the problem continues. The option is:

The maximum memory a cPanel process can use before it is killed off (in megabytes). Values less than 256 megabytes can not be specified. A value of "0" will disable the memory limits.

[cPanelDon]

hi i have the same problem , here is what u wanted.
i get internal server error every time i want to do something.

# grep -H '' /etc/*release /usr/local/cpanel/version /var/cpanel/envtype
/etc/redhat-release:CentOS release 5.4 (Final)
/usr/local/cpanel/version:11.25.0-RELEASE_42404
/var/cpanel/envtype:virtuozzo

# grep "conserve_memory\|enable_cpansqlite\|maxmem" /var/cpanel/cpanel.config
conserve_memory=1
enable_cpansqlite=0
maxmem=256

# cat /proc/user_beancounters
Version: 2.5
       uid  resource                     held              maxheld                                         barrier                limit              failcnt
      290:  kmemsize                 12507682             23472746           214                           7483646           2147483646                    0
            lockedpages                     0                    0                                          999999               999999                    0
            privvmpages                777254               786711                                          786432               786432                  595
            shmpages                     2940                26039                                          262144               262144                    0
            dummy                           0                    0                                               0                    0                    0
            numproc                       204                  215                                          999999               999999                    0
            physpages                   36860                59636                                               0           2147483647                    0
            vmguarpages                     0                    0                                          262144           2147483647                    0
            oomguarpages                36861                59636                                          262144           2147483647                    0
            numtcpsock                    107                  498                                         7999992              7999992                    0
            numflock                        9                   14                                          999999               999999                    0
            numpty                          2                    2                                          500000               500000                    0
            numsiginfo                      0                  158                                          999999               999999                    0
            tcpsndbuf                 6749504             18038512            21                           4748160            396774400                    0
            tcprcvbuf                 1760048              8802208            21                           4748160            396774400                    0
            othersockbuf                40976               250752            21                           4748160            396774400                    0
            dgramrcvbuf                     0                78624            21                           4748160            396774400                    0
            numothersock                   42                   75                                         7999992              7999992                    0
            dcachesize                      0                    0           214                           7483646           2147483646                    0
            numfile                      3477                 3992             2                           3999976             23999976                    0
            dummy                           0                    0                                               0                    0                    0
            dummy                           0                    0                                               0                    0                    0
            dummy                           0                    0                                               0                    0                    0
            numiptent                      33                   33                                          999999               999999                    0

well , what should i do ? i have configured apache with easyapache. and i have activated worker,fcgi,cgi,curl,ioncube,zend &...

thanks in advanced

Based on the provided detail the issue stems from the VPS reaching a memory limit (e.g., "privvmpages") that is defined in the hardware node configuration of the Virtuozzo/OpenVZ container.

Of most importance is the "fail count" number seen above (e.g., "595" for "privvmpages"), and that it is likely increasing on the system; this is evidence that the hardware node is not allowing enough resources to the virtual environment (VPS) container under the hardware-node-defined Virtuozzo/OpenVZ "UBC" limits.

Regarding specific corrective methods and procedures I believe the following documentation references for Virtuozzo/OpenVZ may help to narrow what to check or look for in the hardware node configuration.

Specific to privvmpages:
UBC secondary parameters - privvmpages - OpenVZ Wiki

Additional resources:
Setting UBC parameters - OpenVZ Wiki
User Guide/Managing Resources - OpenVZ Wiki
UBC primary parameters - OpenVZ Wiki
UBC secondary parameters - OpenVZ Wiki
UBC auxiliary parameters - OpenVZ Wiki
UBC parameters table - OpenVZ Wiki

[zenkis]

I'm also having some issue with my VPS lately.

server load and ram usage is fine.
But some times whm /cpanel won't work. Webmail will say service temporary unavailable.

I've got a bad surprise when I looked at my /proc/user_beancounters

many fails

Any advice?

Version: 2.5
       uid  resource                     held              maxheld              barrier                limit              failcnt
      121:  kmemsize                 29901024             30421221            157286400            157286400                    0
            lockedpages                     0                    0  9223372036854775807  9223372036854775807                    0
            privvmpages                919955               923133              1000000              1000000                51354
            shmpages                   274966               274966               350000               350000                 6305
            dummy                           0                    0  9223372036854775807  9223372036854775807                    0
            numproc                       254                  259                  600                  600                    0
            physpages                  129318               130097                    0  9223372036854775807                    0
            vmguarpages                     0                    0         206158430208         206158430208                    0
            oomguarpages               129319               130098  9223372036854775807         164926744166                    0
            numtcpsock                     60                   62                  800                  800                    0
            numflock                        9                   11  9223372036854775807  9223372036854775807                    0
            numpty                          1                    1                   30                   30                    0
            numsiginfo                      0                    2                  256                  256                    0
            tcpsndbuf                 1920256              2725696  9223372036854775807  9223372036854775807                    0
            tcprcvbuf                  996144              1012528  9223372036854775807  9223372036854775807                    0
            othersockbuf                57968               328368  9223372036854775807  9223372036854775807                    0
            dgramrcvbuf                     0                30576  9223372036854775807  9223372036854775807                    0
            numothersock                   51                   62                  300                  300                    0
            dcachesize                3334290              3355887  9223372036854775807  9223372036854775807                    0
            numfile                      8551                 8559                29312                29312                  763
            dummy                           0                    0                    0                    0                    0
            dummy                           0                    0                    0                    0                    0
            dummy                           0                    0                    0                    0                    0
            numiptent                     287                  287                 2000                 2000                    0

[cPanelJared]

/proc/user_beancounters reports information about what are called Quality of Service (QoS) parameters. These are defined in the hardware node that hosts your VPS, and they are defined by the hardware node's administrator.

Any number higher than 0 in the failcnt column for any of these parameters indicates that your VPS has tried to exceed the value set by the administrator for your VPS. Your server has exceeded the allowed value for privvmpages, shmpages and numfile. These are key QoS parameters, and the short explanation is that your server is both trying to use too much memory, and trying to open more files, than allowed.

The following pages provide good explanations of the parameters that are reported in /proc/user_beancounters:

Meaning of the /proc/user beancounters Values - VPSLink Wiki
QoS explinations [Archive] - Layered Tech Support Forums
1&1 Webhosting FAQ | What are those User Beancounters?

Basically, this is not an issue caused by cPanel itself. This is an issue of your VPS exceeding the resource limits set by the administrator of the hardware node. You will need to contact the VPS hardware node administrator to ask if these limits can be increased for your VPS.

[zenkis]

Thank you.

Is the mysqld settings (my.cnf) could have an impact on the privvmpages.

If I low the cache size of buffer size ... could it help?