Date: Thu, 2 Oct 2014 10:24:13 -0700 From: hiren panchasara <hiren@freebsd.org> To: Julien Cigar <jcigar@ulb.ac.be> Cc: "freebsd-net@freebsd.org" <freebsd-net@freebsd.org>, FreeBSD Stable Mailing List <freebsd-stable@freebsd.org> Subject: Re: [jcigar@ulb.ac.be: Listen queue overflow: 8 already in queue awaiting acceptance] Message-ID: <CALCpEUGjeLo3jid5vb0SxCRM7NBkWe2FdKLAoUM=%2B34ALZs3Vw@mail.gmail.com> In-Reply-To: <20141002164202.GI29361@mordor.lan> References: <20141002164202.GI29361@mordor.lan>
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On Thu, Oct 2, 2014 at 9:42 AM, Julien Cigar <jcigar@ulb.ac.be> wrote: > sorry for cross-posting, I'm forwarding this as it seems that part of > the problem is also related to: > https://lists.freebsd.org/pipermail/freebsd-net/2014-September/039664.html Umm, this looks like a different problem than the subject of this email. > > I also wonder if something has been fixed in -STABLE in this area .. > > (please keep me in CC as I'm not subscribed on freebsd-net@ an > freebsd-stable@) > > -- > Julien Cigar > Belgian Biodiversity Platform (http://www.biodiversity.be) > PGP fingerprint: EEF9 F697 4B68 D275 7B11 6A25 B2BB 3710 A204 23C0 > No trees were killed in the creation of this message. > However, many electrons were terribly inconvenienced. > > > ---------- Forwarded message ---------- > From: Julien Cigar <jcigar@ulb.ac.be> > To: freebsd-questions@freebsd.org > Cc: > Date: Thu, 2 Oct 2014 11:52:06 +0200 > Subject: Listen queue overflow: 8 already in queue awaiting acceptance > Hello, > > I'm running 10-RELEASE on a HP Proliant DL160 Gen8 and I'm seeing the > following in my kernel logs: > sonewconn: pcb 0xfffff8010e561310: Listen queue overflow: 8 already in > queue awaiting acceptance This usually means the application is not keeping up with the incoming connections. > > I already raised kern.ipc.soacceptqueue to 1024 and netstat -naA | grep > "fffff8010e561310" returns nothing This is the usual way of finding the culprit process. If this doesn't return anything, it probably means that it is a short-lived process. Here is an example of what you could do: sonewconn: pcb 0xfffff8008f40cb10: Listen queue overflow: 1 already in queue awaiting acceptance >From kgdb, (kgdb) p ((struct inpcb *)0xfffff8008f40cb10)->inp_inc $3 = {inc_flags = 0 '\0', inc_len = 0 '\0', inc_fibnum = 0, inc_ie = {ie_fport = 0, ie_lport = 10295, ie_dependfaddr = { ie46_foreign = {ia46_pad32 = {0, 0, 0}, ia46_addr4 = {s_addr = 0}}, ie6_foreign = {__u6_addr = { __u6_addr8 = '\0' <repeats 15 times>, __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {0, 0, 0, 0}}}}, ie_dependladdr = {ie46_local = {ia46_pad32 = {0, 0, 0}, ia46_addr4 = {s_addr = 0}}, ie6_local = {__u6_addr = { __u6_addr8 = '\0' <repeats 15 times>, __u6_addr16 = {0, 0, 0, 0, 0, 0, 0, 0}, __u6_addr32 = {0, 0, 0, 0}}}}}} Here, ie_lport = 10295 which is in n/w byte order and converting it to host byte order, 10295 -> 0x2837 and swapping them gives us 0x3728 which is 14120. Now, use sockstat to find out what process is on that port: $ sockstat -l | grep 14120 cheers, Hiren
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