[Catalyst] how many RAM used is normal

[Marcello Romani]

Fayland Lam ha scritto:
> we are using Catalyst under mod_perl2. and every httpd is costing 
> 130-200M. `top` shows:
> 
> 1566 apache    16   0  147m 136m 6188 S  0.0  1.7   0:23.97 httpd
> 1567 apache    16   0  147m 136m 6200 S  0.0  1.7   0:28.51 httpd
> 1568 apache    16   0  143m 132m 6192 S  0.0  1.6   0:23.45 httpd
> 1569 apache    16   0  144m 133m 6192 S  0.0  1.6   0:24.36 httpd
> 1570 apache    15   0  152m 141m 6196 S  0.0  1.7   0:23.45 httpd
> 1571 apache    16   0  141m 130m 6192 S  0.0  1.6   0:24.57 httpd
> 1572 apache    16   0  143m 131m 6196 S  0.0  1.6   0:22.13 httpd
> 1581 apache    16   0  148m 137m 6184 S  0.0  1.7   0:22.56 httpd
> 1582 apache    16   0  142m 131m 6188 S  0.0  1.6   0:22.12 httpd
> 1583 apache    16   0  144m 133m 6192 S  0.0  1.6   0:21.89 httpd
> 1584 apache    16   0  141m 130m 6184 S  0.0  1.6   0:23.20 httpd
> 1587 apache    16   0  151m 139m 6184 S  0.0  1.7   0:23.87 httpd
> 1588 apache    16   0  140m 129m 6180 S  0.0  1.6   0:21.76 httpd
> 1589 apache    16   0  142m 131m 6188 S  0.0  1.6   0:20.75 httpd
> 2128 apache    16   0  138m 127m 6176 S  0.0  1.6   0:09.76 httpd
> 
> is it normal under Catalyst+DBIx::Class+Template? or there is something 
> wrong?
> What's your Catalyst App costs? Thanks.
> 

I suppose that's a 'top' output; memory columns should be: virtual, 
resident, shared.

memory usage is thus between 120 and 130 MB for each httpd instance
(e.g. 1360MB resident - 6M shared).

For example, on one of my servers I have vmware server running:

  4615 root 5 -10  365m 307m 296m S    0 15.2  81:57.93 vmware-vmx
  3905 root 5 -10  381m 304m 291m S    2 15.0  85:41.40 vmware-vmx

resident: 307MB, 296 of which are shared among the two processes.

If all those httpd processes run the same app I think they have should 
have more shared memory.
You could probably check if you preload your app in your apache config file.
Something like:

<Perl>
use lib qw(/path/to/MyApp/lib);
</Perl>
PerlModule MyApp;

etc.


HTH

Just my 2 eurocents.


-- 
Marcello Romani
Responsabile IT
Ottotecnica s.r.l.
http://www.ottotecnica.com