From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 9A92513888F for ; Mon, 19 Oct 2015 23:39:57 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 18D1C21C058; Mon, 19 Oct 2015 23:39:40 +0000 (UTC) Received: from mail-io0-f179.google.com (mail-io0-f179.google.com [209.85.223.179]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id 1306E21C001 for ; Mon, 19 Oct 2015 23:39:38 +0000 (UTC) Received: by ioll68 with SMTP id l68so4116987iol.3 for ; Mon, 19 Oct 2015 16:39:38 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :content-type; bh=TkpUuSz2Pry+nQURG+1sJIRkNJW29PVuRARGkVUbk1o=; b=os2RqFvxGwCZRGCDs62PfKz28xz02Xy74oQkyjqxF1DwKJY1qDVip2G1qDrk0o2EYt skcZrZfFFPqFlEilGYT+4oAmIfCKp5DN6+hb2p9Bquuu4tPUIQRu/ncW1Er1ttTkDGF7 ECV3b4XOgtLoZz0P0FH7l23XSY0NYPR1xDII0xS3ouHlv14MWILjWCUDTP42qY1HZbTy bcesghYAWb9OeaMo60KCo4xw04szlS+lONfTfYddbhMzMgI5cLjI4Laj6dmjIbwqkyg6 KDmmkpbGCmalgtxQbZ/3pn32EzlSTffWKIJzoPornQ2F88Utu/Kh1NVibLbs4nR6xQlJ vt7A== Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 X-Received: by 10.107.166.79 with SMTP id p76mr588618ioe.163.1445297978227; Mon, 19 Oct 2015 16:39:38 -0700 (PDT) Received: by 10.107.132.22 with HTTP; Mon, 19 Oct 2015 16:39:38 -0700 (PDT) In-Reply-To: References: Date: Tue, 20 Oct 2015 10:39:38 +1100 Message-ID: Subject: Re: [gentoo-user] Re: TCP listen overflows From: Adam Carter To: "gentoo-user@lists.gentoo.org" Content-Type: multipart/alternative; boundary=001a1141f37e96401a05227da89d X-Archives-Salt: 48b518e3-e1b2-4acd-bdc9-2a90cfbbbc8c X-Archives-Hash: 267ea90dc56bf792e84b2fe47be04372 --001a1141f37e96401a05227da89d Content-Type: text/plain; charset=UTF-8 I dont know what that error means, but default webserver and TCP stack options may not be helping. I investigated a Centos box with resources issues a while back. It had many thousands of sockets in TIME_WAIT state. IIRC i reduced /proc/sys/net/ipv4/tcp_fin_timeout from 60 to 15, and enabled pipelining on the webserver, along with a few other webserver tweaks. First quick check if it happens again: netstat -an | grep -ci wait If it returns a five figure number then the above would be worth a look. --001a1141f37e96401a05227da89d Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
I dont know what that error means, but defa= ult webserver and TCP stack options may not be helping. I investigated a Ce= ntos box with resources issues a while back. It had many thousands of socke= ts in TIME_WAIT state.

IIRC i reduced /proc/sys/net/ipv4/tcp_fin_timeout fro= m 60 to 15, and enabled pipelining on the webserver, along with a few other= webserver tweaks.

First quick check if it happens again: nets= tat -an | grep -ci wait
If it returns a five figure number then th= e above would be worth a look.
=
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