Re: Memory used by a single oracle server process in Solaris
- From: Marcin Przepiorowski <pioro1@xxxxxxxxx>
- To: jonathan@xxxxxxxxxxxxxxxxxx
- Date: Tue, 23 Aug 2011 14:11:29 +0100
On Tue, Aug 23, 2011 at 11:55 AM, Jonathan Lewis
<jonathan@xxxxxxxxxxxxxxxxxx> wrote:
>
> Sreejith
>
> Following up on just the OTN thread from now on, but won't pmap also be
> reporting the size of the Oracle executable - which is probably around the
> 100MB difference you're seeing.
>
pmap on linux is displaying process memory map. ex
db-alog1fe-b-r3.sea32$ pmap -x 27671
27671: ora_dbw1_alog1fe
Address Kbytes RSS Anon Locked Mode Mapping
0000000000400000 147200 - - - r-x-- oracle
00000000095c0000 12308 - - - rwx-- oracle
....
0000003454c00000 8 - - - r-x-- libdl-2.5.so
0000003454c02000 2048 - - - ----- libdl-2.5.so
0000003454e02000 4 - - - r-x-- libdl-2.5.so
0000003454e03000 4 - - - rwx-- libdl-2.5.so
.......
0000003455616000 4 - - - rwx-- libpthread-2.5.so
0000003455617000 16 - - - rwx-- [ anon ]
0000003456400000 28 - - - r-x-- librt-2.5.so
0000003456407000 2048 - - - ----- librt-2.5.so
0000003456607000 4 - - - r-x-- librt-2.5.so
....
00002ad7f9151000 60 - - - rwx-- zero
00002ad7f9160000 64 - - - rwx-- zero
00002ad7f9170000 64 - - - rwx-- zero
00002ad7f9180000 64 - - - rwx-- zero
00002ad7f9190000 64 - - - rwx-- zero
00002ad7f91a0000 196 - - - rwx-- zero
00002ad7f91d1000 132 - - - rwx-- [ anon ]
00002ad7f91f2000 4 - - - rwxs- hc_alog1fe.dat
00007fff62cc1000 84 - - - rwx-- [ stack ]
ffffffffff600000 8192 - - - ----- [ anon ]
---------------- ------ ------ ------ ------
total kB 26948320 - - -
and only memory mapped to zero [/dev/zero] is a additional memory used
by process itself.
Take a look on Solaris version on Tanel Poder blog -
http://tech.e2sn.com/oracle/performance/unix-performance-tools/process-memory-matrix
regards,
--
Marcin Przepiorowski
http://oracleprof.blogspot.com
--
//www.freelists.org/webpage/oracle-l
Other related posts:
