Re: Shared memory not enabled in 2.4.0?

[Ernesto Hernandez-Novich]

On Mon, 8 Jan 2001 [e-mail] wrote:
> 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

You should check shared memory with "ipcs" instead.

Make sure you enabled "System V IPC" under "General Setup" (it's a
default value, though).
-- 
Ernesto Hernández-Novich - Running Linux 2.4.0 i686 - Unix: Live free or die!
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