At 01:19 PM 3/21/2008, [EMAIL PROTECTED] wrote: >Date: Fri, 21 Mar 2008 14:19:01 -0600 >From: "Kirk Haines" <[EMAIL PROTECTED]> >Subject: Re: [Mongrel] mongrel garbage collection >To: mongrel-users@rubyforge.org >Message-ID: > <[EMAIL PROTECTED]> >Content-Type: text/plain; charset=ISO-8859-1 >On Fri, Mar 21, 2008 at 1:23 PM, Scott Windsor <[EMAIL PROTECTED]> >wrote: > > > I understand that the GC is quite knowledgeable about when to run > garbage > > collection when examining the heap. But, the GC doesn't know > anything about > > my application or it's state. The fact that when the GC runs > everything > > stops is why I'd prefer to limit when the GC will run. I'd rather > it run > > outside of serving a web request rather then when it's right in the > middle > > of serving requests. > >It doesn't matter, if one is looking at overall throughput.
Hi Kirk, One thought on this - would it be possible to schedule GC to run just after all the html has been rendered to the client from Rails, but while leaving open the connection (so that mongrel is blocked on Rails)? If so, it seems like if one were using something like nginx fair proxy, then the mongrel would be running it's garbage collection AFTER the client got all its html but BEFORE any new requests were sent to it. In a fully loaded server it wouldn't matter at all, but most environments have a little headroom at least, so that nginx fair proxy would just route around the mongrel that is still running a GC at the end of it's Rails loop. So total throughput for a given (non-max) volume of requests might be unaffected since nothing would ever pile up behind a rails process that has slowed down to run GC (and the client will be happy since they got all their html before the GC started). I have no idea if this is meaningful, but I've been playing with some performance tests against mongrel + nginx fair proxy and it occurs to me that this might be relevant.. Best, Steve _______________________________________________ Mongrel-users mailing list Mongrel-users@rubyforge.org http://rubyforge.org/mailman/listinfo/mongrel-users
