From owner-freebsd-questions@freebsd.org Thu Feb 4 15:57:20 2016 Return-Path: Delivered-To: freebsd-questions@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 D1979A9BDDF for ; Thu, 4 Feb 2016 15:57:20 +0000 (UTC) (envelope-from vivek@khera.org) Received: from mail-wm0-x230.google.com (mail-wm0-x230.google.com [IPv6:2a00:1450:400c:c09::230]) (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 762DB1E70 for ; Thu, 4 Feb 2016 15:57:20 +0000 (UTC) (envelope-from vivek@khera.org) Received: by mail-wm0-x230.google.com with SMTP id p63so218526252wmp.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=XiF8HbBpnqZvyaOzKy9sncJOy1Izy/nhFoJu8Z1eNOCNxrKS4Wc0aTfnqHfcUC9W6J p7sN8RUPc90VX/ZKODC81SH7nZW9kOR2M+WsscAnYzZQ1u3+LipvBWN8uN+ny6kQYXUM 1dINhTxAjKxqrW2O8skV1btbfX75GSLuXOm9f49Qx9mvvWjLFqGqi1D1UkoGiRC2hpsJ TN5BcuN8VSuPV8/aAvjlP5m4JJETMVH9P8do/z5cARpr4LXI32YS5EoNJ2ZhHA9RynEt kkkALcvgbaiHvnujHPLgwpz7Zw5ExcW0A0W2OTVyW/XMOVbNiY+v7UTEwUtyFrL+pdnI xb6A== X-Gm-Message-State: AG10YOQ3N+N1TcHtZDHB4pyf2vCrUf6G0ZEddl+LntH7IWriyn1wB0i2EbrBd535PTLhwym+yhqhXBelVsDbZQ== 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-questions@freebsd.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: User questions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 04 Feb 2016 15:57:21 -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!