[imp] Memory Usage

robert sand rsand at d.umn.edu
Thu Jan 9 11:03:29 PST 2003


It would be interesting to see how much of the memory used below is actually 
shared memory.  Do a pmap -x pid on one of the httpd processes at the end of the 
report you will see a total in kbytes of memory usage.  The second number is the 
total amount of memory used by that process and the 3rd is the amount of that 
total that is in shared libraries.  If you are not using shared libraries the 
third number will be very low to nothing.  This is bad.  A recompile of the 
software to use shared libraries would be needed.


Fábio Gomes wrote:

> Hi all,
> 
>  I'm experiencing a high memory usage for my http process in my webmail 
> machine. It is a Solaris 8 system, running in a Sun v880.
> 
> Related softwares:
> 
> apache_1.3.27
> libmcrypt-2.5.3
> mm-1.2.1
> mod_ssl-2.8.12-1.3.27
> openssl-0.9.6h
> php-4.2.3
> 
> 
> top output:
> 
> 11910 usermail   4  38    0  192M  157M run    23:31  1.64% httpd
> 21865 usermail   4  10    0  189M  153M cpu2   44:11  2.85% httpd
> 14099 usermail   4  58    0  182M  145M sleep  23:42  0.60% httpd
> 12249 usermail   4  53    0  182M  145M sleep  25:12  0.45% httpd
> 12241 usermail   4  58    0  182M  144M sleep  25:05  3.31% httpd
> 21427 usermail   4  58    0  160M  128M sleep  40:50  1.29% httpd
> 21423 usermail   4  51    0  149M  127M sleep  50:38  1.94% httpd
> 25002 usermail   4  58    0  145M  122M sleep  38:45  1.27% httpd
> 24057 usermail   4  58    0  145M  121M sleep  29:14  1.25% httpd
> 14452 usermail   4  52    0  143M  120M sleep  25:06  0.39% httpd
> 
> Can anyone give me some directions?
> 
> Thank you all,
> Fabio Gomes
> 


-- 
Robert Sand.
mailto:rsand at d.umn.edu
University of Minnesota, Duluth
Information Technology Systems and Services
144 MWAH
218-726-6122        fax 218-726-7674

"Walk behind me I may not lead, Walk in front of me I may not follow,
  Walk beside me and we walk together"  UTE Tribal proverb.



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