From owner-freebsd-hackers@FreeBSD.ORG Fri Aug 29 06:44:53 2014 Return-Path: Delivered-To: freebsd-hackers@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [8.8.178.115]) (using TLSv1 with cipher ADH-AES256-SHA (256/256 bits)) (No client certificate requested) by hub.freebsd.org (Postfix) with ESMTPS id 4D791D59 for ; Fri, 29 Aug 2014 06:44:53 +0000 (UTC) Received: from mail-ie0-x230.google.com (mail-ie0-x230.google.com [IPv6:2607:f8b0:4001:c03::230]) (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 211371CA9 for ; Fri, 29 Aug 2014 06:44:53 +0000 (UTC) Received: by mail-ie0-f176.google.com with SMTP id x19so2278701ier.21 for ; Thu, 28 Aug 2014 23:44:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=gEj04jKGaAhBOyMatTSl88lZ2UMJ4OJfi+Pb4Ui2xwU=; b=sRRhi3/+PWowOlfmMAOAK8uNslBl9pGhRWuImybHhoN+tw/wH5/AsR9TZn1QkIt2wI D4bqXZg/4F2Yt74VXVvUleXXfF/0KJxHUzBLZ0qE0FDMkIGj7nx74A6b4Vq67WUz4sch TfwG3FnrUjTJTPDRiNBJ+7REpvEDoqReEOeZWHWpAwQR+0IojECod5SsKQaM8g3J2bnR 8UzZR5cemqpCljlnNTSehZKcWeKdCGba+Tgn/iar6GtiVEoh9ia2Q7BBkJXID7iv0T15 Jqe4oBMJ9Y05JQxaGlrXkGQi9mV6XBHSo82zSFiQhv3F/lRmu8GYpDHnS36KAFYQaBa7 UQVg== MIME-Version: 1.0 X-Received: by 10.50.67.51 with SMTP id k19mr1792920igt.39.1409294692527; Thu, 28 Aug 2014 23:44:52 -0700 (PDT) Received: by 10.107.15.1 with HTTP; Thu, 28 Aug 2014 23:44:52 -0700 (PDT) Date: Fri, 29 Aug 2014 08:44:52 +0200 Message-ID: Subject: Sudden and strange problem From: Oriental Sensation To: freebsd-hackers@freebsd.org Content-Type: text/plain; charset=UTF-8 X-BeenThere: freebsd-hackers@freebsd.org X-Mailman-Version: 2.1.18-1 Precedence: list List-Id: Technical Discussions relating to FreeBSD List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 29 Aug 2014 06:44:53 -0000 Hi guys, No idea if this is related to FreeBSD but hopefully someone could help me. Couple of days ago I upgraded to 10.1-PRERELEASE and something happened. My configuration is a host with 2 jails -- the host runs unbound and the two jails use it to resolve. There's one local zone entitled "local" and few hosts to identify the jails: dbs.local, smtp.local, www.local, etc. One jail runs dovecot+postfix and the other runs a web server. There's a really strange thing going on because occasionally trying to telnet from the web server to the other jail (port 25 or 143) takes few seconds, but most of the time it takes a millisecond. I did a 'truss' and 'drill' and I am attaching 2 links to the logs: http://pastebin.com/rUrq10vd (look at line 276, I surrounded it with empty lines because that's where the delay happens -- this time for 2 seconds) http://pastebin.com/Q3W3dhLM (again, I inserted spaces around line #151 where 5 seconds in delay -- twice). By the way, running the same commands few times after, no delay is apparent. Anyone got an idea what on earth is causing this? Thanks in advance for any help. /OriS