Re: FastCGI causes website to hang

[roberto blanko <robertoblanko@xxxxxxxxx>]

Try restarting your apache, then list your semaphores with the command "ipcs". Wait until apache stops working in the described manner, then list them again and check if there are any semaphores missing.

Hi Björn,

thanks for your support. I monitored the semaphores and shared memory the way you described. With the following results:

Right after Apache restart:

------ Shared Memory Segments --------
key        shmid      owner      perms      bytes      nattch     status
0x0115859c 26116096   root      600        682600     5

------ Semaphore Arrays --------
key        semid      owner      perms      nsems
0x00000000 2359296    apache    600        1
0x00000000 2392065    apache    600        1
0x00000000 2424834    apache    600        1
0x00000000 2457603    apache    600        1
0x00000000 2490372    apache    600        1
0x00000000 2523141    apache    600        1
0x00000000 2555910    apache    600        1
0x00000000 2588679    apache    600        1
0x00000000 2621448    apache    600        1

After apache stopped working:

------ Shared Memory Segments --------
key        shmid      owner      perms      bytes      nattch     status
0x0115859c 0          root      600        682600     12

------ Semaphore Arrays --------
key        semid      owner      perms      nsems
0x00000000 0          apache    600        1
0x00000000 32769      apache    600        1
0x00000000 65538      apache    600        1
0x00000000 98307      apache    600        1
0x00000000 131076     apache    600        1
0x00000000 163845     apache    600        1
0x00000000 196614     apache    600        1
0x00000000 229383     apache    600        1
0x00000000 262152     apache    600        1

I'm not the real freak when it comes to semaphores and shared memory usage. Can you see something suspicious there?

Another notice: After reading your reply I deactivated eAccellerator, ionCube-Loader and Zend-Optimizer, so that PHP runs without any additional caches or optimzers, Unfortunately this didn't help and apache stopped working again.