From owner-svn-src-head@freebsd.org Tue Sep 6 21:51:55 2016 Return-Path: Delivered-To: svn-src-head@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 268A8BCDB49; Tue, 6 Sep 2016 21:51:55 +0000 (UTC) (envelope-from mjguzik@gmail.com) Received: from mail-wm0-x22d.google.com (mail-wm0-x22d.google.com [IPv6:2a00:1450:400c:c09::22d]) (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 B7B20CB1; Tue, 6 Sep 2016 21:51:54 +0000 (UTC) (envelope-from mjguzik@gmail.com) Received: by mail-wm0-x22d.google.com with SMTP id b187so86325540wme.1; Tue, 06 Sep 2016 14:51:54 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:cc:subject:message-id:references:mime-version :content-disposition:in-reply-to:user-agent; bh=EoBVjaDT+P/9Fnw8zb3Rv4wmG++3V23dGEacy74vy0g=; b=NOUhRZKeVb0EaJadxWTO9Q4KTmBFcOFpEnOsVO2mvqqtm+G5oAnDTQuHsO+JF4Fisr USmRt5ZEbsFb4qAJAe2XIPb7m4YD78dEXvDn0IaaMfttae7Gmpx20QUJprCJJYXiqTtu YmfBSWCfamuc4rFixAqJHUDODAdFfcQ/cojTo5N0NxNuRq6cDNGhrhjCuRxh25m9uryf w4mqk7U3WPakqQo5kVDKIThJwp/ZZMr63zN0df+5QgUqpottNnzPLY5dvVjT8m7pBCCU xkCXah+uVAFjNVmUel40BtHJjetXvfER6yHn8XDWnbK5nSF7JVbzDR7Tblyt2f9NodsZ VLCg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:cc:subject:message-id:references :mime-version:content-disposition:in-reply-to:user-agent; bh=EoBVjaDT+P/9Fnw8zb3Rv4wmG++3V23dGEacy74vy0g=; b=kQHyZlxC2n0hEbri/GHnKqivzXzFqNKMaToho5lUK+Knvg9XNn/AtJzXFNAedxES6A 1cnyzRR0Q3YyvXbHtcPpYjULF0S3I918VDb6qdeQz66BRjs36SLr3+5d1Ug645Q+xmZZ 6AZ8SwkzjcymVtgLcGXqyRM/cMxX1YyNWpTnvhGa5pyFWjbuiQX+mRL9TZ+m3FEVcnL3 mFKL3+bd992x+BSWE7NIF+1ZEJvl9bYfZqH4njGJ2E00UAFXTllNYSYGjygktznWrfER p5px8Q82P5gQwQZAf6wutUQBrTgp/8PYCUsnGS55/RLaQDlLxC2IQyEMQJ1A8SpYpZfs LB+A== X-Gm-Message-State: AE9vXwPY+WyR+veTY+5oej53mzZg9pBZ6Yr9v9t14xG+GCJWo/OiA8HSiy06LuiIivyHMw== X-Received: by 10.28.74.217 with SMTP id n86mr730331wmi.84.1473198712941; Tue, 06 Sep 2016 14:51:52 -0700 (PDT) Received: from dft-labs.eu (n1x0n-1-pt.tunnel.tserv5.lon1.ipv6.he.net. [2001:470:1f08:1f7::2]) by smtp.gmail.com with ESMTPSA id 188sm854553wmo.4.2016.09.06.14.51.51 (version=TLS1_2 cipher=AES128-SHA bits=128/128); Tue, 06 Sep 2016 14:51:52 -0700 (PDT) Date: Tue, 6 Sep 2016 23:51:49 +0200 From: Mateusz Guzik To: Andriy Gapon Cc: Mateusz Guzik , src-committers@FreeBSD.org, svn-src-all@FreeBSD.org, svn-src-head@FreeBSD.org, Konstantin Belousov Subject: Re: svn commit: r305504 - head/sys/fs/nullfs Message-ID: <20160906215149.GC23680@dft-labs.eu> References: <201609062122.u86LM3hf032522@repo.freebsd.org> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline In-Reply-To: User-Agent: Mutt/1.5.21 (2010-09-15) X-BeenThere: svn-src-head@freebsd.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: SVN commit messages for the src tree for head/-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 06 Sep 2016 21:51:55 -0000 On Wed, Sep 07, 2016 at 12:46:44AM +0300, Andriy Gapon wrote: > On 07/09/2016 00:22, Mateusz Guzik wrote: > > nullfs: stop special-casing directories in null_vptocnp > > > > The previous code was forcing an expensive walk in vop_stdvptocnp, > > which was causing performance issues on highly contended zfs. > > In other words, the name cache was always bypassed for directories? > Or whatever the target fs had in store for resolving names. This particular thing was causing a lot of idle time on my poudriere tests due to lockmgr contention. -- Mateusz Guzik