From Bugzilla Helper: User-Agent: Mozilla/4.77 [en] (X11; U; Linux 2.2.19 i686) After upgrading my Red Hat 7.0 machines with kernel-2.2.19-7.0.1 the kernel always reports 0 shared memory and 0 swap usage. I suspect this is not true because my machines are working correctly. Here is the output of the memory status reported by the kernel: $ cat /proc/meminfo total: used: free: shared: buffers: cached: Mem: 535310336 532930560 2379776 0 269357056 163246080 Swap: 1077501952 0 1077501952 MemTotal: 522764 kB MemFree: 2324 kB MemShared: 0 kB Buffers: 263044 kB Cached: 159420 kB BigTotal: 0 kB BigFree: 0 kB SwapTotal: 1052248 kB SwapFree: 1052248 kB Reproducible: Always Steps to Reproduce: 1. cat /proc/meminfo Actual Results: The kernel reports 0 shared memory and swap usage: total: used: free: shared: buffers: cached: Mem: 535310336 532930560 2379776 0 269357056 163246080 Swap: 1077501952 0 1077501952 MemTotal: 522764 kB MemFree: 2324 kB MemShared: 0 kB Buffers: 263044 kB Cached: 159420 kB BigTotal: 0 kB BigFree: 0 kB SwapTotal: 1052248 kB SwapFree: 1052248 kB Expected Results: The kernel should have reported at least 200 MB shared memory usage. This doesn't happen if I use the standard 2.2.19 kernel or the 2.2.16-22 and 2.2.17-14 Red Hat kernel versions.
Newer kernels (2.2.19 and 2.4) no longer report shared memory as the accounting for that was a significant performance impact.
2.2.19 does: $ cat /proc/meminfo total: used: free: shared: buffers: cached: Mem: 131125248 58826752 72298496 35450880 25706496 7979008 Swap: 135241728 0 135241728 MemTotal: 128052 kB MemFree: 70604 kB MemShared: 34620 kB Buffers: 25104 kB Cached: 7792 kB SwapTotal: 132072 kB SwapFree: 132072 kB $ uname -r 2.2.19
*** Bug 39545 has been marked as a duplicate of this bug. ***