Re: Shared memory quantity not being reflected by /proc/meminfo

[Albert D. Cahalan]

Allan Duncan writes:

> Since the 2.4.x advent of shm as tmpfs or thereabouts,
> /proc/meminfo shows shared memory as 0.  It is in
> reality not zero, and is being allocated, and shows
> up in /proc/sysvipc/shm and /proc/sys/kernel/shmall
> etc..
> Neither 2.4.6-pre5 nor 2.4.5-ac17 have the correct
> display.

You misunderstood what 2.2.xx kernels were reporting.
The "shared" memory in /proc/meminfo refers to something
completely unrelated to SysV shared memory. This is no
longer calculated because the computation was too costly.