2001-11-14 12:48:09

by Mike Black

[permalink] [raw]
Subject: Odd meminfo 2.4.14

On 2.4.14 (upgraded from 2.4.10) first time I've seen this (I run vmstat all
the time).

total: used: free: shared: buffers: cached:
Mem: 526016512 519815168 6201344 0 653324288 18446744073256501248
Swap: 524279808 68616192 455663616
MemTotal: 513688 kB
MemFree: 6056 kB
MemShared: 0 kB
Buffers: 638012 kB
Cached: 4294515120 kB
SwapCached: 9744 kB
Active: 61300 kB
Inactive: 143752 kB
HighTotal: 0 kB
HighFree: 0 kB
LowTotal: 513688 kB
LowFree: 6056 kB
SwapTotal: 511992 kB
SwapFree: 444984 kB

I've got this exact same kernel on two other machines and they don't show
the funky cache #'s (yet).

I see in proc_misc.c that cache is printed with B(pg_size) in the first line
whereas it's printed with K(pg_size - swapper_space.nrpages) on the
"Cached:" line.
Both of them are wrong so it looks like pg_size is hosed somehow.

Also...pg_size is:
pg_size = atomic_read(&page_cache_size) - i.bufferram ;

What does pg_size have to do with bufferram????

________________________________________
Michael D. Black Principal Engineer
[email protected] 321-676-2923,x203
http://www.csihq.com Computer Science Innovations
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FAX 321-676-2355