Date: Tue, 11 Jul 2017 16:00:36 +0200 From: Hans Petter Selasky <hps@selasky.org> To: Kajetan Staszkiewicz <vegeta@tuxpowered.net>, freebsd-net@freebsd.org Subject: Re: memory leaks in 11.0? Message-ID: <611f7ba6-ee4a-51e8-38c1-7f8e84b1dc9e@selasky.org> In-Reply-To: <1771938.JUakJLQFm8@energia> References: <1771938.JUakJLQFm8@energia>
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On 07/11/17 15:56, Kajetan Staszkiewicz wrote: > Hello, > > I finally upgraded one of many of my routers to 11.0. > > Unfortunately after running fine for a month it ran out of memory. "wired" > memory slowly grows up to allocating all memory in system when no more memory > is left for other programs. Things first get swapped and eventually die. > > The router runs BIRD which has not much to do, it is for internal networks > only, pf, pfsync (currently disabled via `ifconfig pfsync0 down`), filebeat, > smokeping, ntp, nrpe and custom python cron job for sending data to Graphite. > > `vmstat -z` shows constantly increasing allocation of "512" and "UMA Slabs". > Memory allocated for all pf-related things seems fine. I have graphite graps > for every `vmstat -z` and the icrease on "512" grows in similar way as "wired" > memory. "512" has 2 917 392 used objects allocated at this moment, "UMA Slabs" > is 379 006, there is 2636MiB "wired" memory. > > How can I debug which part of kernel is responsible for this? I run GENERIC > kernel with ixl driver 1.7.11 from Intel, as the one in GENERIC had issues > detecting links on my x710 NIC. > > I ask here, because it is a router, mostly being busy with his network cards, > routing and pf. Please direct me to a better group if you can. > > I can crash this system if needed and dump memory (I hope that is possible on > GENERIC) for analysis. > Hi, Last time I traced memory leaks I used some dtrace scripts to trace all allocations and frees and then analayzed the result using a perl script which I found on the internet. --HPS
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