Still, what I find interesting is that clamav uses this much memory:
ps -ef | grep clamav | awk '{ print $2 '} | xargs pmap -d | grep
mapped:
mapped: 159420K writeable/private: 131344K shared: 0K
while one of my processes will be:
ps -ef | grep site-196 | awk '{ print $2 '} | xargs pmap -d | grep
mapped:
mapped: 398652K writeable/private: 179412K shared: 100K
and I don't have any site actually running on user site-196
This is supposed to be in kB? So something is computed wrong by the
system or I don't understand the data here.
For a process that is used by a site this changes drastically:
ps -ef | grep webb2009 | awk '{ print $2 '} | xargs pmap -d | grep
^mapped:
mapped: 593756K writeable/private: 220432K shared: 100K
How much memory would one of this processes actually use? What is
mapped and writeable/private, and is it actually kB or kb ?
Thanks,
Virgil Balibanu
On Apr 20, 2:43 pm, "virgil.balibanu" <[email protected]>
wrote:
> Thanks
>
> On Apr 20, 2:05 pm, Graham Dumpleton <[email protected]>
> wrote:
>
> > On 20 April 2011 20:58, virgil.balibanu <[email protected]> wrote:
>
> > > Hi, I'm using Centos 5.5 and i'm viewing processes using htop. So I
> > > computed that a process should have around 20 MB of occupied memory,
> > > that means one thread has that much, or all of the threads? So do the
> > > threads use the same loaded python and django code or each one of them
> > > loads a new one?
>
> > Each user has one process of size 20MB and the 18 threads should all
> > be running within that one process in the one Python interpreter and
> > Django instance.
>
> > Try using the 'ps' command instead of 'htop'.
>
> > Graham
>
> > > Thanks,
> > > Virgil Balibanu
>
> > > On Apr 20, 1:19 pm, Graham Dumpleton <[email protected]>
> > > wrote:
> > >> On 20 April 2011 20:09, virgil.balibanu <[email protected]>
> > >> wrote:
>
> > >> > Hi,
>
> > >> > I've setup my server using mod_wsgi in deamon mode and apache and
> > >> > everything worked well but I'm having some trouble with memory
> > >> > consumption. Each site is running under his own user and takes a
> > >> > pretty big amount of memory because is uses python and django. Now
> > >> > I've looked into memory consumption and i have each user (site-x
> > >> > format) running 18 processes on linux, each of them taking some
> > >> > memory. My setup looks like this:
> > >> > ...
> > >> > WSGIDaemonProcess site-195 user=site-195 group=nobody inactivity-
> > >> > timeout=172800
> > >> > WSGIDaemonProcess site-196 user=site-196 group=nobody inactivity-
> > >> > timeout=172800
> > >> > WSGIDaemonProcess site-197 user=site-197 group=nobody inactivity-
> > >> > timeout=172800
> > >> > WSGIDaemonProcess site-198 user=site-198 group=nobody inactivity-
> > >> > timeout=172800
> > >> > ...
> > >> > WSGIProcessGroup %{ENV:PROCESS_GROUP}
> > >> > WSGIApplicationGroup %{GLOBAL}
> > >> > WSGISocketPrefix /var/run/wsgi
> > >> > ....
> > >> > Now each site has only a few users at the moment so i don't know why
> > >> > it should take so many processes.
>
> > >> > Could someone please explain how this works to me, because i need to
> > >> > understand and see what can be done about it.
>
> > >> There aren't 18 processes, there are 18 threads within each process.
> > >> This is because there are default 15 threads and then the main thread
> > >> waiting for shutdown and two background threads for deadlock timeout
> > >> and inactivity timeout checking.
>
> > >> What Linux system are you use and what version? Way back in time,
> > >> Linux systems showed each thread as a separate processes when you use
> > >> some tools for listing processes. I thought this had changed and they
> > >> only showed one process now no matter how many threads they ran.
>
> > >> Can you say exactly what command you are using to monitor processes
> > >> and the exact command line arguments as well?
>
> > >> Graham
>
> > > --
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