From: Denis Vlasenko <vda@port.imtp.ilyichevsk.odessa.ua>
To: linux-kernel@vger.kernel.org
Subject: Further info on underflow in /proc/meminfo
Date: Thu, 26 Sep 2002 15:30:29 -0200 [thread overview]
Message-ID: <200209261236.g8QCaCp04179@Port.imtp.ilyichevsk.odessa.ua> (raw)
This is roughly how it is generated:
...
struct sysinfo i;
...
si_meminfo(&i);
val->bufferram = atomic_read(&buffermem_pages);
...
pg_size = atomic_read(&page_cache_size) - i.bufferram;
...
sprintf("cached: %d",B(pg_size));
...
On my box I have:
# cat /proc/meminfo
total: used: free: shared: buffers: cached:
Mem: 30322688 27533312 2789376 0 19501056 18446744073699565568
Swap: 100655104 8732672 91922432 ^^^^^^^^^^^^^^^^^^^^
MemTotal: 29612 kB
...
so, page_cache_size-buffermem_pages<0 and after it got scaled pages->bytes
we have LARGE "cached:" value! :-)
# uname -a
Linux pegasus 2.4.18-pre6mhv_ll #2 SMP Wed Mar 27 11:17:36 GMT+2 2002 i686 unknown
--
vda
reply other threads:[~2002-09-26 12:35 UTC|newest]
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