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SubjectShared memory not enabled in 2.4.0?


For some reason shared memory is not being enabled on my system running kernel
v2.4.0 (on RedHat v6.2, with all updates applied).

Per the documentation I have this line in my /etc/fstab:

none /dev/shm shm defaults 0 0

Yes, I have created this subdirectory:

# ls -l /dev | grep shm
drwxrwxrwt 1 root root 0 Jan 7 11:54 shm

No complaints are seen at startup, yet I still have no shared memory:

# cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 130293760 123133952 7159808 0 30371840 15179776
Swap: 136241152 0 136241152
MemTotal: 127240 kB
MemFree: 6992 kB
MemShared: 0 kB
Buffers: 29660 kB
Cached: 14824 kB
Active: 3400 kB
Inact_dirty: 37872 kB
Inact_clean: 3212 kB
Inact_target: 4 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 127240 kB
LowFree: 6992 kB
SwapTotal: 133048 kB
SwapFree: 133048 kB

Is there some configuration option which I missed? Some trick not mentioned in
the doc?

Thank you.


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