Date: Wed, 27 Sep 2017 11:27:06 +0200 From: "O. Hartmann" <o.hartmann@walstatt.org> To: Guido Falsi <madpilot@FreeBSD.org> Cc: "O. Hartmann" <ohartmann@walstatt.org>, freebsd-current <freebsd-current@freebsd.org> Subject: Re: net/asterisk13: memory leak under 12-CURRENT? Message-ID: <20170927112706.436500ec@freyja.zeit4.iv.bundesimmobilien.de> In-Reply-To: <b0a72fdb-ad41-abab-fbde-4caa73799719@FreeBSD.org> References: <20170926144522.21e59cfe@freyja.zeit4.iv.bundesimmobilien.de> <979b6cfe-0e38-5df3-7bb5-cdb8de6677bf@FreeBSD.org> <20170926154155.28deb2e1@freyja.zeit4.iv.bundesimmobilien.de> <b0a72fdb-ad41-abab-fbde-4caa73799719@FreeBSD.org>
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On Wed, 27 Sep 2017 09:05:42 +0200 Guido Falsi <madpilot@FreeBSD.org> wrote: > On 09/26/2017 15:41, O. Hartmann wrote: > > On Tue, 26 Sep 2017 15:06:23 +0200 > > Guido Falsi <madpilot@FreeBSD.org> wrote: > > > Since I run net/asterisk with automatic module loading (I'm new to > > asterisk), this is very likely and might cause the problem somehow. > > > > You can exclude single modules from autoloading via modules.conf. I tried, but I need to study first more documentation to explore what is prerequisite and what is optional. > > >> Not sure, restarting the daemon should free any leaked memory the daemon > >> has. If a killed process leaves memory locked at the system level there > >> should be some other cause. > > > > Even with no runnidng asterisk, memory level drops after the last shutdown > > of asterisk and keeps that low. Even for weeks! My router never shows that > > high memory consumption, even under load. > > But while asterisk is running does the memory usage increase unbounded > till filling all available memory or does it stabilize at some point? As far as I could observe, a three day test run of the router/firewall/asterisk box drained around 500 MB of memory: starting at boot time with ~3700 MB, asterisk leaves the box with ~3640 MB after bein started and after three days the system reached ~3150 MB. Stopping asterisk gave back some memory, so ~3300 MB then was for days the final result - not recovering anything further. I use TEMPFS, if it matters, but I checked /tmp and /var/, there were no remnant files so far. TMPVAR is only allowed to have 256 MB. > > Asterisk is relatively memory hungry, especially with all modules > enabled. It also caches and logs various information in RAM, even doing > "nothing" it will cache and log that "nothing" activity. If memory does > stabilize after some point it's not really a leak but it's standard > memory usage. To reduce it you should disable all unused modules. > > > > > The question would be: how to use vmstat to give hints for those familiar > > with memory subsystems to indicate a real bug? > > > > I tried to find some advices, but maybe my English isn't good enough to make > > google help. > > I'm not able to give you a correct indication, but if the memory usage > is not increasing indefinitely but is stabilizing I'd say it's not > really a leak. > Can't say whether it is stabilising or not - I think the runtime is too short. I'll check first to disable some modules in the first place and then try to perform a test with several days of asterisk enabled.
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