Date: Sat, 02 Oct 2004 11:18:28 -0700 From: Julian Elischer <julian@elischer.org> To: Jan Srzednicki <w@expro.pl> Cc: hackers@freebsd.org Subject: Re: Wired memory monitoring Message-ID: <415EF0F4.9060409@elischer.org> In-Reply-To: <20041002114846.GA23339@miranda.expro.pl> References: <20041002114846.GA23339@miranda.expro.pl>
next in thread | previous in thread | raw e-mail | index | archive | help
Jan Srzednicki wrote: > Hello, > > I am investigating some VM issues on FreeBSD. I have noticed that wired > memory grows quite rapidly on forking lots of processes. After those > processes exit, it drops a bit, but still can use about 100MB after > launching 3000 processes. I think it's not a leak, as subsequent forks > don't cause it to grow noticeably. > > I'm rather curious what eats all that memory. sysctl vm.zone shows some > high values, but they're are not high in memory usage terms, even > considering 50% (or so) efficiency of the slab allocator. > > The question is, are there any other memory inspecting tools that would > allow me to see where is all that wired memory? And, are there any ways > to control it's behaviour (eg. to free unused per-process structures and > data)? > > greetings, Every thread allocated only shows the thread structure in the zone stats but there is a 3 page stack allocated with it too which doesn't show up there.
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?415EF0F4.9060409>