From owner-freebsd-net@freebsd.org  Thu May 24 14:08:30 2018
Return-Path: <owner-freebsd-net@freebsd.org>
Delivered-To: freebsd-net@mailman.ysv.freebsd.org
Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1])
 by mailman.ysv.freebsd.org (Postfix) with ESMTP id 5407BEF23F6
 for <freebsd-net@mailman.ysv.freebsd.org>;
 Thu, 24 May 2018 14:08:30 +0000 (UTC)
 (envelope-from raimund.sacherer@logitravelgroup.com)
Received: from mail-it0-x232.google.com (mail-it0-x232.google.com
 [IPv6:2607:f8b0:4001:c0b::232])
 (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits))
 (Client CN "smtp.gmail.com",
 Issuer "Google Internet Authority G2" (verified OK))
 by mx1.freebsd.org (Postfix) with ESMTPS id E28596D5A5
 for <freebsd-net@freebsd.org>; Thu, 24 May 2018 14:08:29 +0000 (UTC)
 (envelope-from raimund.sacherer@logitravelgroup.com)
Received: by mail-it0-x232.google.com with SMTP id n64-v6so2512650itb.3
 for <freebsd-net@freebsd.org>; Thu, 24 May 2018 07:08:29 -0700 (PDT)
DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=logitravel-com.20150623.gappssmtp.com; s=20150623;
 h=mime-version:from:date:message-id:subject:to;
 bh=1AbESiOGVZZTcGtwTVX1pJ+tliR/2qUocnsudw45h0c=;
 b=UD6UqjMN2e/AVvGBOViQtBRXHsq0h/S1niw9N04JmGqfAVupFhsObh8AS1FqxKY5r2
 n7u0mz+o/v87j0Ddg899XOe4BL/nWYHV4Q59rKP203XSWxgPOKkT46HPQX7dwsrCPE4Y
 3u8YNu6/I4orHkVticIC1Qxxx+00Sn5TOjr6PyKtzZu66cJ2xHHCuqruSvEiHSbjDBzw
 uyzKnVtVNmk/nqzISpUtlIhF53tuUzYhv+otaHRTVFGV9WUGYE9pGmrJbGIonbo8B4dK
 7VQwELoRfVYlu3l2S1xOfUY+TAegeXH2FbCbJoskaTBw9y2aiYeG2XQDG4DSR2y09C/C
 sLIQ==
X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed;
 d=1e100.net; s=20161025;
 h=x-gm-message-state:mime-version:from:date:message-id:subject:to;
 bh=1AbESiOGVZZTcGtwTVX1pJ+tliR/2qUocnsudw45h0c=;
 b=XuIKwp5svPf6gzE8Bvz3csJkE+Tw3CrDGFad4RQJALj5hv+pcGV5v1pZnP6xB+wR4f
 xYolxVuTZ/MZmG0OGdH9lLHXNwikng6Tb9ehPip5tKGH+0gI8h6GoghnL81CcB5TwhBR
 zynBnXpxFpJoJ2Uo0kvpYBSVG7ayZ46LfqP7kYAyxxfNM2rqdpFhgp9/280F4KxsBVZY
 L3d+X6U19LBVKqOMAJBANSc54azWIUR2Q8lJkEoBDrSqMFBdJ0tROJgVbecG86Gz+Tam
 cmADE9U53VghP2MNRzUnfTyAwRAZ2J1+hmN14yVnuAob8wCH532f3rxJpomqphLGLrX3
 Fxwg==
X-Gm-Message-State: ALKqPweBYEt2PoQhVOYu2pxSf8B4KHMZfp+DJQwRB36uQAJs0kajg5kn
 94KgRsi/SyWV5ZBuxFmTmDm4WOaY++c9sYT+MeE3vi1d
X-Google-Smtp-Source: ADUXVKKKqrdIdKKWhOZCs6BMzeO5l+FAX6X9gQMX2pDxWsLC0lJVtfKMX+XYpQSbvT5SA6fpPqQnlexDAopmoZ9VGbo=
X-Received: by 2002:a24:ac23:: with SMTP id
 s35-v6mr9418550ite.104.1527170908757; 
 Thu, 24 May 2018 07:08:28 -0700 (PDT)
MIME-Version: 1.0
From: Ray <rs@logitravel.com>
Date: Thu, 24 May 2018 16:09:01 +0200
Message-ID: <CAAG+3oXo03mO+UfOvz4fVPeN2QjxfVW7+yeV6nBSzxD=wZLfbQ@mail.gmail.com>
Subject: systat -ip, socket buffer full
To: freebsd-net@freebsd.org
Content-Type: text/plain; charset="UTF-8"
X-Content-Filtered-By: Mailman/MimeDel 2.1.26
X-BeenThere: freebsd-net@freebsd.org
X-Mailman-Version: 2.1.26
Precedence: list
List-Id: Networking and TCP/IP with FreeBSD <freebsd-net.freebsd.org>
List-Unsubscribe: <https://lists.freebsd.org/mailman/options/freebsd-net>,
 <mailto:freebsd-net-request@freebsd.org?subject=unsubscribe>
List-Archive: <http://lists.freebsd.org/pipermail/freebsd-net/>
List-Post: <mailto:freebsd-net@freebsd.org>
List-Help: <mailto:freebsd-net-request@freebsd.org?subject=help>
List-Subscribe: <https://lists.freebsd.org/mailman/listinfo/freebsd-net>,
 <mailto:freebsd-net-request@freebsd.org?subject=subscribe>
X-List-Received-Date: Thu, 24 May 2018 14:08:30 -0000

Hello,

when checking systat -ip I see the value for "socket buffer full" with
values different from 0, I see 1, 2, up to 55 in one occasion.

I asked on IRC and it was mentioned I should try to up
kern.ipc.soacceptqueue to 1024 from the default 128, but I could still see
values over 0 in "socket buffer full".

How can I tune this buffer?

We have a lot of UDP traffic (the server is a PBX serving around 200 agents
with avg 50 concurrent calls.

thank you
Best
Ray