Re: equivalent of /proc/meminfo in AIX

  • From: dbvision@xxxxxxxxxxxx
  • To: "Oracle-L List" <oracle-l@xxxxxxxxxxxxx>
  • Date: Wed, 23 May 2012 10:36:50 +0800

         vmstat is one of your friends:
usage: vmstat [ -fsviItlwhc ] [ [ -p | -P ]  pagesize | ALL ] [ -@
Wpar Name | ALL ] [ Drives ] [ -S [ Power ]] [ Interval [ Count ] ]
aubdc00-aws01d:NPPRD$vmstat -P ALL

System configuration: mem?92MB

pgsz           
memory                           page
----- -------------------------- ------------------------------------
           siz      avm      fre    re   
pi    po    fr     sr    cy
   4K   953760   611862    40911     0     0    
0     3      6     0
  64K    20262    21278      166     0    
0     0     0      0     0
  16M      200      158       42     0    
0     0     0      0     0
aubdc00-aws01d:NPPRD$vmstat -l

System configuration: lcpu=4 mem?92MB ent=1.00

kthr    memory             
page              faults             
cpu           large-page
----- ----------- ------------------------ ------------
----------------------- -----------
 r  b   avm   fre  re  pi  po  fr   sr  cy  in   sy 
cs us sy id wa    pc    ec   alp   flp
 1  1 1599475 43570   0   0   0   4    7   0 125 2390
759  1  0 98  0  0.01   1.2   158    42

        You might as well read this:

        
http://www-03.ibm.com/systems/resources/systems_p_os_aix_whitepapers_multiple_page.pdf

        The savings is much less about memory than it is about CPU cycles:
translating virtual addresses into physical ones is not a free
operation...
----- Original Message -----
 From: thiagomaciel@xxxxxxxxx 
To:"Oracle-L List" 
Cc: 
Sent:Tue, 22 May 2012 12:47:39 -0300
Subject:equivalent of /proc/meminfo in AIX

 Hello All,
 I'd like to quantifying large page (16mb) Memory Savings with Oracle
10gR2
 (10.2.0.5) running on aix 6.1 like this test below:

 
http://kevinclosson.wordpress.com/2009/07/28/quantifying-hugepages-memory-savings-with-oracle-database-11g/

 In Linux we have /proc/meminfo ("PageTables") , what is the
equivalent of
 /proc/meminfo in AIX? Where is the pagetables in AIX?

 Thanks in advance.

 Thiago Maciel

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