2.4.3-ac2 -- How do I determine if shm is being used?

I have mounted:

none on /var/shm type shm (rw)
tmpfs on /dev/shm type tmpfs (rw)

Yet, running "x11perf -shmput10" gives me:

X Error of failed request: BadValue (integer parameter out of range for operation)
Major opcode of failed request: 146 (MIT-SHM)
Minor opcode of failed request: 3 (X_ShmPutImage)
Value in failed request: 0x1600001
Serial number of failed request: 35107
Current serial number in output stream: 35111

I'd like to check to make sure that shm is actually accessible to my programs. Is there any easy way to do this?

I have already checked the values of:

	/proc/sys/kernel/shmall = 2000000
	/proc/sys/kernel/shmmax = 4096
	/proc/sys/kernel/shmmni = 35000000

Thanks,
Miles

Hi Miles,

Not necessary any more.

Also not necessary, but recommended for POSIX shm. BTW it will not work with Linus' kernel. Type "shm" is supported by both versions.

Ubfortunately this does not tell what it wanted to do.

ipcs should be your friend. Especially 'ipcs -lm'.

Greetings
Christoph