11 Apr
2007
11 Apr
'07
3:50 a.m.
[2]$ cat /proc/meminfo MemTotal: 7128956 kB MemFree: 2132556 kB Buffers: 556832 kB Cached: 2821408 kB
A supplementary question, can anyone explain what "buffers" and "cached" are? I have a performance problem with postgresql (discussion is on the postgresql list), and I see those figures displayed by commands such as free, top and procinfo but the man pages don't define them.
Buffers = disk buffers (buffers of stuff to be read/written) Cached = page cache which stores filesystem and process pages...copy of files in memory