I am switching to nginx as soon as I move the server. Anyway for now I
disabled apps that are not used (should not be used) and changed the apache
conf to
Timeout 35
KeepAlive On
MaxKeepAliveRequests 15
KeepAliveTimeout 2
<IfModule mpm_worker_module>
StartServers 5
MaxClients 10
MinSpareThreads 15
MaxSpareThreads 15
ThreadsPerChild 10
MaxRequestsPerChild 50
</IfModule>
and the memory exhaustion problem seems to be gone away. At least for now.
massimo
On Thursday, 14 June 2012 05:10:43 UTC-5, mcm wrote:
>
> Massimo,
>
> do you have any good reason to run apache? if not switch to nginx.
>
> mic
>
>
> 2012/6/14 Michele Comitini <[email protected]>:
> > Correction:
> >> mpm_worker -> spawn a number of different long running processes to
> >> manage requests
> > mpm_worker -> spawn a number of different long running *threads* to
> > manage requests
> >
> >
> > 2012/6/14 Michele Comitini <[email protected]>:
> >> mpm_prefork -> fork a number of different long running processes to
> >> manage requests
> >> mpm_worker -> spawn a number of different long running processes to
> >> manage requests
> >>
> >> wsgi can fork and thread python interpreters so the overall status of
> >> forking and threading varies a lot because of this.
> >> An important thing to remember is that if the python interpreter dies
> >> all threads in the same thread group die.
> >> If there is a pure threaded only configuration the whole apache server
> >> can die if python dies.
> >>
> >> Switching to prefork could make the site more available, but does hide
> >> the real problem, i.e. the python interpreter dies for some reason.
> >>
> >> N.B. php can work reliably only on prefork configuration, because it
> >> is not thread safe.
> >>
> >> mic
> >>
> >>
> >> 2012/6/14 Massimo Di Pierro <[email protected]>:
> >>> some follow up. One thing that happened when the problem started is
> that I
> >>> was experimenting with the apache settings and turned off keepalive.
> >>>
> >>> I do not fully understand the implications of apache settings
> >>> (mpm_prefork_module vs mpm_worker_module) and their parameters but
> since
> >>> Python get slower the more cores are available for a fixed number of
> >>> threads, there is an optimum set of parameters depending on the
> >>> architecture.
> >>>
> >>> I will continue some experimentation.
> >>>
> >>> Massimo
> >>>
> >>>
> >>> On Wednesday, 13 June 2012 17:47:55 UTC-5, Massimo Di Pierro wrote:
> >>>>
> >>>> The fact is I did not have that problem before. The number of users
> has
> >>>> not increased much. Either a recent commit changed something (if this
> is a
> >>>> web2py problem) or it is a cache issue (I have many apps and some
> cache too
> >>>> much stuff in ram).
> >>>>
> >>>> massimo
> >>>>
> >>>> On Wednesday, 13 June 2012 17:38:26 UTC-5, Bruce Wade wrote:
> >>>>>
> >>>>> This seems like the same problems I am having with
> new.youadworld.com all
> >>>>> the resources are getting sucked out of 5 servers. I am starting to
> think I
> >>>>> will have to start porting some of the sites features to a different
> >>>>> technology.
> >>>>>
> >>>>> This is a bad situation as I have been developing
> >>>>> www.fittraineronline.com also with web2py however I cannot run into
> the same
> >>>>> situation with that site, especially when I will have a mobile web
> app also
> >>>>> with potentially millions of members.
> >>>>>
> >>>>> I am going to continue digging through the core and try to optimize
> this
> >>>>> as the developers productivity is great. However spending around
> $1200 a
> >>>>> month just to run a site that can't handle 40,000 members isn't
> good.
> >>>>>
> >>>>> On Wed, Jun 13, 2012 at 3:31 PM, Massimo Di Pierro
> >>>>> <[email protected]> wrote:
> >>>>>>
> >>>>>> I do not know. Everything worked fine for long time until one week
> ago I
> >>>>>> started having problems with the server. The fact is nothing
> changed in
> >>>>>> web2py to be causing this. I am still debugging but not much info
> to look
> >>>>>> at. I have lots of apps running on the same server and I am
> planning to do a
> >>>>>> major cleanup so we can have mirrors.
> >>>>>>
> >>>>>> Massimo
> >>>>>>
> >>>>>> On Wednesday, 13 June 2012 16:13:25 UTC-5, JavierQQ wrote:
> >>>>>>>
> >>>>>>>
> >>>>>>> On Wed, Jun 13, 2012 at 4:08 PM, davidjensen wrote:
> >>>>>>>>
> >>>>>>>> cannot establish connection to www.web2py.com
> >>>>>>>> 2012-06-13T17:11
> >>>>>>>
> >>>>>>>
> >>>>>>> Me too :(
> >>>>>>> why is this happening constantly?
> >>>>>>>
> >>>>>>> Javier
> >>>>>
> >>>>>
> >>>>>
> >>>>>
> >>>>> --
> >>>>> --
> >>>>> Regards,
> >>>>> Bruce Wade
> >>>>> http://ca.linkedin.com/in/brucelwade
> >>>>> http://www.wadecybertech.com
> >>>>> http://www.fittraineronline.com - Fitness Personal Trainers Online
> >>>>> http://www.warplydesigned.com
> >>>>>
> >>>
>
