Vmstat fault section all values are 0


 
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Operating Systems AIX Vmstat fault section all values are 0
# 8  
Old 02-20-2013
Here is an example of vmstat focusing on paging - and showing file activity.
Code:
root@x106:[/]vmstat -I -w -P ALL 5

System configuration: mem=1024MB

pgsz            memory                           page                 
----- -------------------------- ------------------------------------ 
           siz      avm      fre    fi    fo    pi    po    fr     sr 
   4K   175856    89003     1018  4820  4806     0     0  9604  18549 
  64K     5393     5240      153     0     0     0     0     0      0 

   4K   175856    89003     1088  4789  4813     0     0  9627  18281 
  64K     5393     5240      153     0     0     0     0     0      0 

   4K   175856    89003     1088  4752  4701     0     0  9504   9515 
  64K     5393     5240      153     0     0     0     0     0      0 

   4K   175856    89003     1088  4738  4749     0     0  9474  14739 
  64K     5393     5240      153     0     0     0     0     0      0

Another program to investigate is filemon to get a deeper analysis/insights into what the i/o system is doing.
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Session::Oracle(3)					User Contributed Perl Documentation					Session::Oracle(3)

NAME
Apache::Session::Oracle - An implementation of Apache::Session SYNOPSIS
use Apache::Session::Oracle; #if you want Apache::Session to open new DB handles: tie %hash, 'Apache::Session::Oracle', $id, { DataSource => 'dbi:Oracle:sessions', UserName => $db_user, Password => $db_pass, Commit => 1 }; #or, if your handles are already opened: tie %hash, 'Apache::Session::Oracle', $id, { Handle => $dbh, Commit => 1 }; DESCRIPTION
This module is an implementation of Apache::Session. It uses the Oracle backing store and no locking. See the example, and the documentation for Apache::Session::Store::Oracle for more details. USAGE
The special Apache::Session argument for this module is Commit. You MUST provide the Commit argument, which instructs this module to either commit the transaction when it is finished, or to simply do nothing. This feature is provided so that this module will not have adverse interactions with your local transaction policy, nor your local database handle caching policy. The argument is mandatory in order to make you think about this problem. This module also respects the LongReadLen argument, which specifies the maximum size of the session object. If not specified, the default maximum is 8 KB. AUTHOR
This module was written by Jeffrey William Baker <jwbaker@acm.org>. SEE ALSO
Apache::Session::File, Apache::Session::Flex, Apache::Session::DB_File, Apache::Session::Postgres, Apache::Session perl v5.12.1 2007-09-28 Session::Oracle(3)