Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755274Ab0KLHqO (ORCPT ); Fri, 12 Nov 2010 02:46:14 -0500 Received: from relay.felk.cvut.cz ([147.32.80.7]:12530 "EHLO relay.felk.cvut.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754933Ab0KLHqN (ORCPT ); Fri, 12 Nov 2010 02:46:13 -0500 X-Greylist: delayed 2042 seconds by postgrey-1.27 at vger.kernel.org; Fri, 12 Nov 2010 02:46:12 EST Date: Fri, 12 Nov 2010 08:11:58 +0100 From: Michal Svoboda To: linux-kernel@vger.kernel.org Subject: Re: Sync semantics. Message-ID: <20101112071158.GG16758@myhost.felk.cvut.cz> Mail-Followup-To: linux-kernel@vger.kernel.org References: <20101111125219.GA945@bitwizard.nl> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha1; protocol="application/pgp-signature"; boundary="j2AXaZ4YhVcLc+PQ" Content-Disposition: inline In-Reply-To: <20101111125219.GA945@bitwizard.nl> User-Agent: Mutt/1.5.21 (2010-09-15) X-FELK-MailScanner-Information: X-MailScanner-ID: oAC7BwJE091951 X-FELK-MailScanner: Found to be clean X-FELK-MailScanner-SpamCheck: not spam, SpamAssassin (not cached, score=-1.9, required 6, autolearn=not spam, BAYES_00 -1.90) X-FELK-MailScanner-From: michal.svoboda@agents.felk.cvut.cz X-FELK-MailScanner-To: linux-kernel@vger.kernel.org X-FELK-MailScanner-Watermark: 1290150720.00352@X4dJS8m/Am9IdKM72+mHng Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1029 Lines: 36 --j2AXaZ4YhVcLc+PQ Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: quoted-printable Rogier Wolff wrote: > What should I expect from a "sync" system call? > # time sync > 0.000u 0.220s 2:22:23.96 0.0% 0+0k 0+0io 2pf+0w > Two hours 22 minutes.=20 I would also be interested to hear the answer for this question. Sync and ongoing i/o simply don't seem to play well together, and you don't even need anything as heavy as mentioned above. Michal Svoboda --j2AXaZ4YhVcLc+PQ Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.11 (GNU/Linux) iEYEARECAAYFAkzc6L4ACgkQg/fU9pp1uX4g+QCgsh4zJNbD+it8ia6ZLTIwUffd cLEAmwVzvn+yyVa+0x2I9uCIu24afxJY =poJE -----END PGP SIGNATURE----- --j2AXaZ4YhVcLc+PQ-- -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/