In Apache Configuration > Include Editor > Pre VirtualHost Include > All Versions, I've set my FastCGI settings as follows: Code: <IfModule fcgid_module> # Allows override of value set in wrapper script FcgidInitialEnv PHP_FCGI_MAX_REQUESTS 500 # FcgidMaxRequestsPerProcess should be <= PHP_FCGI_MAX_REQUESTS FcgidMaxRequestsPerProcess 500 FcgidMaxProcesses 15 FcgidMinProcessesPerClass 0 FcgidMaxProcessesPerClass 8 FcgidIdleTimeout 30 FcgidIdleScanInterval 15 FcgidProcessLifeTime 60 FcgidIOTimeout 300 FcgidZombieScanInterval 3 FcgidMaxRequestLen 268435456 </IfModule> However, despite this, when I use top I see that up to 40 or more php processes are running at any given time, each using 30-55 MB, and eating up my RAM. I would expect the settings above would limit these to no more than 15 (i.e., the value of FcgidMaxProcesses), which would be a tolerable amount. But it's not happening ... the setting seems to have no effect. Any ideas what I might be doing wrong?
I find that sometimes restarting apache causes fcgid to leave orphaned php processes running, so check for that first. The following command will close any orphaned php processes. Code: /bin/ps -Ao'command,pid,ppid'|/bin/grep ' 1$'|/bin/grep /php|/bin/awk '{ print $2; }'|/usr/bin/xargs --no-run-if-empty kill -9 You may want to add it to your root cron at /var/spool/cron/root Code: */5 * * * * /bin/ps -Ao'command,pid,ppid'|/bin/grep ' 1$'|/bin/grep /php|/bin/awk '{ print $2; }'|/usr/bin/xargs --no-run-if-empty kill -9 Scanning for idle so often and having such a short process lifetime kind of defeats some of the benefits of having fcgid unless you're really really tight on memory. How much memory do you have and how many accounts on your server?
I tried the first command, and it spits out a bunch of lines that say `kill: can't find process "-c"`. I have 2 GB of memory, 3GB burstable. There is only one cPanel account running on the VPS. The settings were an attempt to kill off what appeared to be idle PHP processes, because they were choking out my RAM, even though most of them were using 0.0% CPU. I am new to managing a VPS, so I may not have done the best thing. Any suggestions welcome and appreciated.
Here is sample top output: Code: PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND 1795 mysql 15 0 3229m 629m 7128 S 0.0 20.5 193:48.01 mysqld 1434 nobody 18 0 440m 129m 736 S 0.0 4.2 33:39.39 memcached 19504 XXXXXXX 16 0 243m 52m 8252 S 0.0 1.7 0:10.84 php 4024 named 25 0 1876m 51m 2604 S 0.0 1.7 0:06.23 named 9625 XXXXXXX 15 0 243m 50m 7908 S 0.0 1.6 0:01.84 php 9564 XXXXXXX 15 0 241m 49m 7880 S 0.0 1.6 0:01.47 php 9566 XXXXXXX 15 0 239m 48m 8060 S 0.0 1.6 0:02.92 php 27756 XXXXXXX 15 0 238m 46m 8740 S 0.0 1.5 0:23.66 php 9623 XXXXXXX 15 0 237m 45m 8008 S 0.0 1.5 0:00.95 php 21621 XXXXXXX 16 0 237m 45m 8932 S 0.0 1.5 1:10.73 php 8036 XXXXXXX 16 0 237m 44m 8928 S 0.0 1.5 0:12.18 php 7718 XXXXXXX 16 0 238m 44m 8704 S 0.0 1.5 0:02.47 php 8132 XXXXXXX 16 0 237m 44m 8960 S 0.0 1.5 0:47.85 php 29713 XXXXXXX 16 0 237m 44m 8788 S 0.0 1.4 0:51.62 php 3333 XXXXXXX 15 0 236m 44m 9004 S 0.0 1.4 2:23.52 php 8131 XXXXXXX 16 0 236m 44m 8972 S 0.0 1.4 0:56.22 php 6044 XXXXXXX 16 0 236m 44m 8908 S 0.0 1.4 0:43.76 php 19513 XXXXXXX 15 0 236m 44m 8900 S 0.0 1.4 0:43.80 php 7722 XXXXXXX 16 0 238m 44m 8444 S 0.0 1.4 0:00.48 php 3697 XXXXXXX 16 0 236m 44m 8756 S 0.0 1.4 1:14.46 php 22122 XXXXXXX 16 0 236m 44m 8736 S 0.0 1.4 0:28.45 php 8136 XXXXXXX 15 0 236m 43m 8888 S 0.0 1.4 0:56.82 php 32672 XXXXXXX 15 0 236m 43m 8888 S 0.0 1.4 0:25.54 php 3716 XXXXXXX 16 0 236m 43m 8884 S 0.0 1.4 0:43.38 php 27690 XXXXXXX 15 0 234m 43m 8880 S 0.0 1.4 0:17.87 php 19527 XXXXXXX 15 0 236m 43m 8916 S 0.0 1.4 0:40.32 php 32057 XXXXXXX 18 0 236m 43m 8740 S 0.0 1.4 1:15.55 php 5870 XXXXXXX 16 0 236m 43m 8884 S 0.0 1.4 0:59.74 php 22126 XXXXXXX 15 0 236m 43m 8540 S 0.0 1.4 0:01.08 php 7386 XXXXXXX 15 0 236m 43m 8540 S 0.0 1.4 0:01.02 php 28129 XXXXXXX 16 0 236m 43m 8444 S 0.0 1.4 0:00.59 php 22125 XXXXXXX 16 0 235m 43m 8712 S 0.0 1.4 0:04.99 php 7721 XXXXXXX 15 0 235m 42m 8548 S 0.0 1.4 0:00.54 php 5228 XXXXXXX 16 0 235m 42m 8560 S 0.0 1.4 0:00.61 php 6038 XXXXXXX 15 0 235m 42m 8548 S 0.0 1.4 0:00.60 php 3717 XXXXXXX 15 0 234m 42m 8916 S 0.0 1.4 1:02.94 php 5233 XXXXXXX 16 0 235m 42m 8540 S 0.0 1.4 0:00.60 php 27762 XXXXXXX 16 0 235m 42m 8536 S 0.0 1.4 0:00.60 php 28421 XXXXXXX 16 0 235m 42m 8536 S 0.0 1.4 0:00.44 php 28423 XXXXXXX 15 0 235m 42m 8532 S 0.0 1.4 0:00.43 php 5221 XXXXXXX 16 0 235m 42m 8532 S 0.0 1.4 0:00.59 php 6039 XXXXXXX 15 0 235m 42m 8532 S 0.0 1.4 0:00.50 php 28122 XXXXXXX 16 0 235m 42m 8532 S 0.0 1.4 0:00.53 php 27785 XXXXXXX 15 0 235m 42m 8532 S 0.0 1.4 0:00.61 php 6037 XXXXXXX 15 0 235m 42m 8536 S 0.0 1.4 0:00.55 php 8056 XXXXXXX 15 0 234m 42m 8720 S 0.0 1.4 0:11.40 php 27739 XXXXXXX 15 0 232m 42m 8720 S 0.0 1.4 0:16.71 php 31879 XXXXXXX 15 0 234m 42m 8928 S 0.0 1.4 1:02.06 php 6035 XXXXXXX 15 0 235m 41m 8548 S 0.0 1.4 0:00.58 php 28124 XXXXXXX 16 0 235m 41m 8548 S 0.0 1.4 0:00.59 php
Not sure why you got an error. Make sure you copied the entire command. To figure out if any of those are orphans another way, you could install htop which is a fancier version of top (htop - an interactive process-viewer for Linux). Type: yum install htop Then after installing, just type htop. At the bottom of the interface you should see "F5 Tree". Press F5 and it will then show what processes are children of other processes. Your PHP processes should be children of httpd. If they are not, then they're likely orphaned and the previous command should clear them, or at least it does with my CENTOS install. Maybe you're running a different OS? Otherwise I'm not sure why valid php process are not being killed when they reach the limits set by your settings above.
I tried installing htop, and got this: Code: # yum install htop Loaded plugins: fastestmirror Determining fastest mirrors * base: mirrors.seas.harvard.edu * extras: mirror.umd.edu * updates: mirror.umd.edu base | 3.7 kB 00:00 base/primary_db | 4.5 MB 00:00 extras | 3.5 kB 00:00 extras/primary_db | 23 kB 00:00 imhbase | 951 B 00:00 imhbase/primary | 8.1 kB 00:00 imhbase 42/42 updates | 3.5 kB 00:00 updates/primary_db | 5.1 MB 00:00 Setting up Install Process No package htop available. Error: Nothing to do
You may need to add a rpm repository first so yum can find top. The following site has some wget and 32-bit / 64-bit rpm commands to run first. Installing htop
