Date: Wed, 30 Apr 1997 07:44:26 +0200 (SAT) From: John Hay <jhay@zibbi.mikom.csir.co.za> To: tom@uniserve.com (Tom Samplonius) Cc: freebsd-stable@FreeBSD.org Subject: Re: Memory usage on NFS server Message-ID: <199704300544.HAA19298@zibbi.mikom.csir.co.za> In-Reply-To: <Pine.NEB.3.95.970429114939.11772H-100000@haven.uniserve.com> from Tom Samplonius at "Apr 29, 97 11:52:18 am"
next in thread | previous in thread | raw e-mail | index | archive | help
> > > > For the record, I've seen the same behavior on a machine whose > > primary job is webservices. This is both for 2.1.7 and 2.2.1. > > The swap will be freed by killing and restarting the webservers. > > > > The machine in question has 64MB RAM and 150MB swap. > > > > The webserver is Apache. > > Both inn and apache used mmap'ed memory. When a process mmaps a shared > file, to what process is the memory usage associated with? > > It could be what you are seeing here is a mmap() leak in these > applications, and that mmap'ed memory is not associated with any process. > > Which version of apache? Which version of inn? > I'm using inn 1.5.1 without mmap(), though I have tried the mmap() patch for nnrpd the last few days, but it didn't make a difference to the "swap leakage". I think it must be some setting in inn because between December and February it was very stable (running on 2.2-ALPHA also using inn 1.5.1). have already tried the old kernel but that didn't help, so I will try to backtrack my "tweaks" to the inn config file. I'm also using a patch to fix the pipe bug in inn which shows mostly as dropped articles to overchan. I'll back that out also. > > > > > Do the numbers that top and ps show for per process memory usage also lie? > > > What I see here on my news server, is that I run out of swap (256M), but > > > according to top and ps a rough calculation of the total of all the > > > processes is less than half that. Inn then typically show a usage of > > > ~70M according to top, but as soon as I kill and restart it the swap usage > > > go down to ~5M. I once even added a 128M vn swapfile and it filled that > > > also without inn showing a usage of more than 70M, but killing and > > > restarting it takes the swap usage down to ~5M. > > > John -- John Hay -- John.Hay@mikom.csir.co.za
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?199704300544.HAA19298>