From owner-freebsd-stable@FreeBSD.ORG Thu Oct 2 17:24:15 2014 Return-Path: Delivered-To: freebsd-stable@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id DF5D5629; Thu, 2 Oct 2014 17:24:14 +0000 (UTC) Received: from mail-qc0-x22a.google.com (mail-qc0-x22a.google.com [IPv6:2607:f8b0:400d:c01::22a]) (using TLSv1 with cipher ECDHE-RSA-RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority G2" (verified OK)) by mx1.freebsd.org (Postfix) with ESMTPS id 90A6034B; Thu, 2 Oct 2014 17:24:14 +0000 (UTC) Received: by mail-qc0-f170.google.com with SMTP id m20so2582880qcx.29 for ; Thu, 02 Oct 2014 10:24:13 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:sender:in-reply-to:references:date:message-id:subject :from:to:cc:content-type; bh=hbPfbYv182WNeqA40SilypbPh9HdU5Y9htXUOksYRuE=; b=tRZmcJ/ZPb6GAkI4ko0cThdG7pDQ4JKFtR9eA8QfifgJWIzR5NkXoow9wYy0S8Zb+l ymtQnUsoo1dvtKg7Fj+6lEQTfgtu3RhzAIcabYgBIaUNfjBanka20VwNlfYR8Dc8NxzY zgxk1zBtsr9aoXkGnslsclLoPZ279hPOfrc+d2fpwnW/gkVTBzHeFNZ/E+5cu6BBdAAU nC2z/lOcX2WpQ7blHQ+FULkpN6hoU7Fj4D0ddSmEgqZsUdfQ3C4jGMVudtuEvrfd7z/F eZmAk+eKL10wQREOa5WN2wOINo8/cdTja9ubLGUM228NSK6oPecnxtt+VbR/36SzEZxg m8qA== MIME-Version: 1.0 X-Received: by 10.224.20.9 with SMTP id d9mr299887qab.7.1412270653481; Thu, 02 Oct 2014 10:24:13 -0700 (PDT) Sender: hiren.panchasara@gmail.com Received: by 10.96.168.194 with HTTP; Thu, 2 Oct 2014 10:24:13 -0700 (PDT) In-Reply-To: <20141002164202.GI29361@mordor.lan> References: <20141002164202.GI29361@mordor.lan> Date: Thu, 2 Oct 2014 10:24:13 -0700 X-Google-Sender-Auth: BOeCzcnWRO3BKmx3I14mXOEAKyA Message-ID: Subject: Re: [jcigar@ulb.ac.be: Listen queue overflow: 8 already in queue awaiting acceptance] From: hiren panchasara To: Julien Cigar Content-Type: text/plain; charset=UTF-8 Cc: "freebsd-net@freebsd.org" , FreeBSD Stable Mailing List X-BeenThere: freebsd-stable@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Production branch of FreeBSD source code List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 02 Oct 2014 17:24:15 -0000 On Thu, Oct 2, 2014 at 9:42 AM, Julien Cigar 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 > 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' , __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' , __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