From owner-freebsd-fs@freebsd.org Thu Feb 4 15:57:20 2016 Return-Path: Delivered-To: freebsd-fs@mailman.ysv.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2001:1900:2254:206a::19:1]) by mailman.ysv.freebsd.org (Postfix) with ESMTP id BF2BDA9BDDE for ; Thu, 4 Feb 2016 15:57:20 +0000 (UTC) (envelope-from vivek@khera.org) Received: from mail-wm0-x231.google.com (mail-wm0-x231.google.com [IPv6:2a00:1450:400c:c09::231]) (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 7625D1E6F for ; Thu, 4 Feb 2016 15:57:20 +0000 (UTC) (envelope-from vivek@khera.org) Received: by mail-wm0-x231.google.com with SMTP id p63so218526251wmp.1 for ; Thu, 04 Feb 2016 07:57:20 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=khera.org; s=google11; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type; bh=4GvGOW1TWFW/bKTHauCxgjMLjS/fYytKMz339J9jCg0=; b=QJIsctlQiI1t1JbcSsB80t8awSCZLx2CI9pkBMhc3NZpunTWlGQxNGssbQ9msNvMi7 ran5OdHPLM08ReIzYQJHRD8COxnR+b5/qfzVf1m7JPwQlGOR1y1FmAeMwrCOtTxQrs/1 Njk86gIdGAh6mhyfB+NkixyWWd033nFbzGBOk= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:cc:content-type; bh=4GvGOW1TWFW/bKTHauCxgjMLjS/fYytKMz339J9jCg0=; b=V2iyYPTUi9pugzu+zFN4O73Z0QviP2FC030kCl69+U3Az9L6tVllcBG/nd5807H9e6 sR7ZqIE8cZvnBUHPXPc15hXT+6R4C1nSnzyF7QPQxSlyUe5x9GXr3atBeC6cU6DmIzzk goweU6OMU+kOzkJCWLqhU2e183W+9L04JMZB1OTEujuTcDUGM5kE6X8P4/vQH3fHmow+ YU8NoNfvrtSP24u4SzhNImsFGT3/uQW16Bjg8QBX3Pgp3saAjRID/Tj3k8EAov7xhaQz FbWkjU0ZXAI9Qduff9/iNP+64Os+lWM5gtAe9k6Qhe803LlkIMqAaosAU/P+p1qMce3Y vJAA== X-Gm-Message-State: AG10YORUM5WnhySbWWLljHLDkMgjMrwhKvFBDh6yxc54jPqippSxBjIq/PeqY/XCJewIlsqRLujwObHcE6Mp6A== MIME-Version: 1.0 X-Received: by 10.194.21.101 with SMTP id u5mr10419573wje.53.1454601438785; Thu, 04 Feb 2016 07:57:18 -0800 (PST) Received: by 10.28.33.5 with HTTP; Thu, 4 Feb 2016 07:57:18 -0800 (PST) In-Reply-To: <1270648257.999240.1454452891099.JavaMail.zimbra@uoguelph.ca> References: <201602021848.u12ImDES067799@gw.catspoiler.org> <1270648257.999240.1454452891099.JavaMail.zimbra@uoguelph.ca> Date: Thu, 4 Feb 2016 10:57:18 -0500 Message-ID: Subject: Re: NFS unstable with high load on server From: Vick Khera To: Rick Macklem Cc: Don Lewis , spork@bway.net, freebsd-fs@freebsd.org, freebsd-questions@freebsd.org Content-Type: text/plain; charset=UTF-8 X-Content-Filtered-By: Mailman/MimeDel 2.1.20 X-BeenThere: freebsd-fs@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: Filesystems List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Feb 2016 15:57:20 -0000 On Tue, Feb 2, 2016 at 5:41 PM, Rick Macklem wrote: > I recently had a report that "-S" would get stuck for a long time before > performing an update of the exports when the server is under heavy load. > I don't think this affects many people, but the attached 2-line patch (not > yet in head) fixes the problem for the guy that reported it. > The -S flag does indeed seem to clear it up. The NFS is stable again, and I'm not seeing any long delays (at least yet in my initial attempts to make it fail). Thanks!