Date: Thu, 19 Dec 2013 10:09:45 +0100 From: Michael Tuexen <Michael.Tuexen@lurchi.franken.de> To: Adrian Chadd <adrian@freebsd.org> Cc: FreeBSD Net <freebsd-net@freebsd.org>, FreeBSD Stable Mailing List <freebsd-stable@freebsd.org>, Mark Felder <feld@freebsd.org> Subject: Re: 10.0-RC1: bad mbuf leak? Message-ID: <FB1A916C-7ABA-4FFD-A79A-CF757E83F6E8@lurchi.franken.de> In-Reply-To: <CAJ-VmonGE2=vmFOnCtLVLyNp0=F%2BNUd6OdU6=rROH_PWkyXSDA@mail.gmail.com> References: <1387204500.12061.60192349.19EAE1B4@webmail.messagingengine.com> <CAJ-VmonGE2=vmFOnCtLVLyNp0=F%2BNUd6OdU6=rROH_PWkyXSDA@mail.gmail.com>
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On Dec 19, 2013, at 9:41 AM, Adrian Chadd <adrian@freebsd.org> wrote: > Hm, try reverting just the em code to that from a 10.0-BETA? Just in > case something changed there? I saw a similar behaviour without the patches we are discussing (regarding ignoring the error). Best regards Michael > > > > -a > > On 16 December 2013 06:35, Mark Felder <feld@freebsd.org> wrote: >> Hi all, >> >> I think I'm experiencing a bad mbuf leak or something of the sort and I >> don't know how to diagnose this further. >> >> I have a machine at home that is mostly used for transcoding video for >> viewing on my TV via the multimedia/plexmediaserver port. This software >> runs in a jail and gets the actual files from my NAS via NFSv4. It's a >> pretty simple setup and sits idle unless I am watching TV. >> >> Between the 10.0-BETAs and the 10.0-RC1 did something network related >> that could affect mbufs change? Ever since I upgraded this machine to >> RC1 it has been "crashing", which I diagnosed as actually being an mbuf >> exhaustion. Raising the mbufs brings it back to life, and it does >> mention the exhaustion on the system console. >> >> Last night, for example, I rebooted the machine and it has been sitting >> mostly idle. I wake up this morning to see this: >> >> # vmstat -z >> >> ITEM SIZE LIMIT USED FREE REQ FAIL SLEEP >> mbuf_packet: 256, 6511095, 1023, 1727, 8322474, 0, >> 0 >> mbuf: 256, 6511095, 2811247, 1563,56000603,121933, >> 0 >> mbuf_cluster: 2048, 1017358, 2750, 0, 2750,2740, >> 0 >> mbuf_jumbo_page: 4096, 508679, 0, 152, 2831466, 137, 0 >> >> # netstat -m >> 812270/3290/2815560 mbufs in use (current/cache/total) >> 1023/1727/2750/1017358 mbuf clusters in use (current/cache/total/max) >> 1023/1727 mbuf+clusters out of packet secondary zone in use >> (current/cache) >> 0/152/152/508679 4k (page size) jumbo clusters in use >> (current/cache/total/max) >> 0/0/0/150719 9k jumbo clusters in use (current/cache/total/max) >> 0/0/0/84779 16k jumbo clusters in use (current/cache/total/max) >> 705113K/4884K/709998K bytes allocated to network (current/cache/total) >> 121933/2740/0 requests for mbufs denied (mbufs/clusters/mbuf+clusters) >> 0/0/0 requests for mbufs delayed (mbufs/clusters/mbuf+clusters) >> 0/0/0 requests for jumbo clusters delayed (4k/9k/16k) >> 137/0/0 requests for jumbo clusters denied (4k/9k/16k) >> 0 requests for sfbufs denied >> 0 requests for sfbufs delayed >> 0 requests for I/O initiated by sendfile >> >> >> The network interface is em(4). >> >> Things I've tried: >> >> - restarting all software/services including the jail >> - down/up the network interface >> >> The only thing that works is rebooting. >> >> Also, the only possible "strange" part of this setup is that the NFS >> mounts used by the jail are not direct. They're actually nullfs mounted >> into the jail as I want access to them outside of the jail as well. Not >> sure if nullfs+nfs could do something this bizarre. >> >> If anyone has any hints on what I can do to track this down it would be >> appreciated. >> _______________________________________________ >> freebsd-net@freebsd.org mailing list >> http://lists.freebsd.org/mailman/listinfo/freebsd-net >> To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" > _______________________________________________ > freebsd-net@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-net > To unsubscribe, send any mail to "freebsd-net-unsubscribe@freebsd.org" >
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