From owner-freebsd-current@FreeBSD.ORG Thu May 17 02:39:06 2012 Return-Path: Delivered-To: freebsd-current@freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [69.147.83.52]) by hub.freebsd.org (Postfix) with ESMTP id 920FD106566B; Thu, 17 May 2012 02:39:06 +0000 (UTC) (envelope-from peter@rulingia.com) Received: from mail15.syd.optusnet.com.au (mail15.syd.optusnet.com.au [211.29.132.196]) by mx1.freebsd.org (Postfix) with ESMTP id 215F78FC1F; Thu, 17 May 2012 02:39:05 +0000 (UTC) Received: from server.rulingia.com (c220-239-254-65.belrs5.nsw.optusnet.com.au [220.239.254.65]) by mail15.syd.optusnet.com.au (8.13.1/8.13.1) with ESMTP id q4H2cvws014862 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=FAIL); Thu, 17 May 2012 12:38:58 +1000 X-Bogosity: Ham, spamicity=0.000000 Received: from server.rulingia.com (localhost.rulingia.com [127.0.0.1]) by server.rulingia.com (8.14.5/8.14.5) with ESMTP id q4H2cvZv026754 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-SHA bits=256 verify=NO); Thu, 17 May 2012 12:38:57 +1000 (EST) (envelope-from peter@server.rulingia.com) Received: (from peter@localhost) by server.rulingia.com (8.14.5/8.14.5/Submit) id q4H2cvWw026753; Thu, 17 May 2012 12:38:57 +1000 (EST) (envelope-from peter) Date: Thu, 17 May 2012 12:38:57 +1000 From: Peter Jeremy To: Devin Teske Message-ID: <20120517023857.GE84284@server.rulingia.com> References: <20120516230615.GC84284@server.rulingia.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="5QAgd0e35j3NYeGe" Content-Disposition: inline In-Reply-To: X-PGP-Key: http://www.rulingia.com/keys/peter.pgp User-Agent: Mutt/1.5.21 (2010-09-15) Cc: freebsd-current@freebsd.org Subject: Re: "make delete-old" performance. X-BeenThere: freebsd-current@freebsd.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Discussions about the use of FreeBSD-current List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Thu, 17 May 2012 02:39:06 -0000 --5QAgd0e35j3NYeGe Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On 2012-May-16 18:11:32 -0700, Devin Teske wrot= e: >Right now, I believe the most useful comparison between systems is >(assuming UFS is in play) the output of "tunefs -p" for the >filesystem that the slowness is appearing on. These systems all run ZFS and apart from the first run, there doesn't seem to be any disk activity at all. It looks like the kernel is the bottleneck. >SoftUpdates (and whether it's enabled or disabled) can play a huge >difference in how fast file-deletions are. I've already successfully run "make delete-old" so there are no actual file deletions. This is all just looking for files that aren't present. --=20 Peter Jeremy --5QAgd0e35j3NYeGe Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v2.0.19 (FreeBSD) iEYEARECAAYFAk+0ZMEACgkQ/opHv/APuIdBAACgvKuCI0Sh2SbX88ZMlQ/I1uHh qcUAoLZoa5Edo7BytFvSgq7HtUgaIQX+ =JNIk -----END PGP SIGNATURE----- --5QAgd0e35j3NYeGe--