Jesse, you are by far deeper into the details of this than me. Being a Linux enthusiast, nevertheless I completely turned my back to Mono, and currently use Scala and the JVM stack for our projects.
On Mon, Oct 8, 2012 at 10:23 PM, Jesse Pasichnyk <je...@pasichnyk.net>wrote: > I have leak issues even on the latest git from the 2.10 branch when > running under fastcgi, not sure if they exist under mod_mono or xsp. Not > sure if my issues are they same, as I see leaked sockets via "lsof |grep > mono|grep identify", but others have suggested that they are due to mvc > leveraging cache/session for mvc3, even if you try to disable it. I can > try to dig up pages/stackoverflows/blogs if your interested. End result is > memory consumption and sometimes exhausted file handles taking the service > down. > > Right now, I'm trying to port my service over to servicestack and remove > all traces of mvc, and see how that works. Not a huge undertaking since my > service is just a redirect service, not a full website. Although, if that > works, I plan to do a similar effort with my www and dashboard, though > keeping mvc but backed by servicestack ISession and ICache implementations. > > Very interested to hear what you guys have found, etc though, as it > appears were all bumping up against the same or related issues. > > Currently I've gotten around it by over building servers behind haproxy, > and doing regular (but annoying) soft recycles of each service instance a > couple times a day. Usually have to recycle them after about 12hrs and/or > 200k requests handled to avoid issues. > > - > Jesse > ------------------------------ > From: Sergey Lobko-Lobanovsky > Sent: 10/7/2012 11:56 PM > To: Dan > Cc: mono-aspnet-list@lists.ximian.com > Subject: Re: [Mono-aspnet-list] issues with intermittent apache hangups > > > Hello Dan, > > Did you finally revert to using the MS stack? > > I wonder if the issues described in this thread are still happening to > others :) > > By the way, my setup back then also used fluent nhibernate, but I don't > remember the exact version, as it was a year ago. > > Sergey. > > On Fri, Jul 22, 2011 at 12:32 PM, Dan <parn...@gmail.com> wrote: > >> An update on where we are with this issue! >> >> The libraries that we are now using are as follows: >> mono 2.10.2 >> fluent nhibernate 1.2 (nhibernate 3.1) >> MVC3 >> >> We've spent the past couple of months trying to figure out why our >> applications are leaking memory and have found a few worrying issues. I >> won't go into details about some of the problems we've seen but will >> concentrate on the leaks since they cause the web applications to >> gradually >> grind to a halt. >> >> I developed a test application (MVC 2 & 3) which contained some simple >> javascript to poll the server very quickly. Monitoring this with the mono >> profiler we found that it never seemed to be garbage collecting the >> CacheItems. However it didn't leak at the same rate as our full web >> applications so something else was going on too. >> >> Finally with a lot of experimentation we have found that if we switch our >> web applications to sessionless (sessionState mode="Off" in Web.config) >> they >> no longer seemed to leak CacheItems and we found that running nhibernate >> in >> "thread_static" mode did not seem to leak but "web" did. Since we couldn't >> leave it as thread_static for the web applications we switched to our own >> simplified CurrentSessionContext implementation. >> >> With those changes our web applications appeared to no longer leak, but in >> fact the applications stopped leaking when running in XSP and as soon as >> we >> deploy to mod_mono they happily start chewing up memory again. >> >> We are also developing a daemon to run alongside the web applications that >> uses the same fluent based data provider as the web application (although >> running in thread_static mode) and the memory usage for that appears to be >> solid, so we know it is not a problem with our data provider >> implementation. >> All the evidence seems to point towards the System.Web related libraries >> (with hints of CacheItem and HashMap thrown in), but we are not familiar >> enough with how it all works to even know where to begin looking, and >> frankly we've wasted too much time on this already. >> >> We have been trying to solve these issues for so long now that we're >> having >> to seriously consider deploying to .NET, despite the fact that we've >> invested a lot of time in building a linux-based server module for the >> daemon and web applications. >> >> If we are no longer seeing leaks using XSP, is there a possibility that we >> could deploy our web application using that instead of mod_mono (by >> setting >> up apache with mod_proxy)? >> >> Regards, >> Dan >> >> >> >> -- >> View this message in context: >> http://mono.1490590.n4.nabble.com/issues-with-intermittent-apache-hangups-tp3264509p3686332.html >> Sent from the Mono - ASP.NET mailing list archive at Nabble.com. >> _______________________________________________ >> Mono-aspnet-list mailing list >> Mono-aspnet-list@lists.ximian.com >> http://lists.ximian.com/mailman/listinfo/mono-aspnet-list >> > >
_______________________________________________ Mono-aspnet-list mailing list Mono-aspnet-list@lists.ximian.com http://lists.ximian.com/mailman/listinfo/mono-aspnet-list
