Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1759265Ab3GRRiI (ORCPT ); Thu, 18 Jul 2013 13:38:08 -0400 Received: from lennier.cc.vt.edu ([198.82.162.213]:37173 "EHLO lennier.cc.vt.edu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1754745Ab3GRRiG (ORCPT ); Thu, 18 Jul 2013 13:38:06 -0400 X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu 0 pass X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu 0 pass X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu 0 pass X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu 0 pass X-Mirapoint-Received-SPF: 198.82.161.152 auth3.smtp.vt.edu 0 pass X-Mailer: exmh version 2.8.0 04/21/2012 with nmh-1.5+dev To: Bob Liu Cc: Martin Steigerwald , Seth Jennings , linux-mm@kvack.org, linux-kernel@vger.kernel.org Subject: Re: zswap: How to determine whether it is compressing swap pages? In-Reply-To: Your message of "Thu, 18 Jul 2013 20:43:40 +0800." <51E7E2FC.3070807@oracle.com> From: Valdis.Kletnieks@vt.edu References: <1674223.HVFdAhB7u5@merkaba> <3337744.IgTT2hGPE5@merkaba> <20130717143834.GA4379@variantweb.net> <3125575.Ki4S75m1kx@merkaba> <51E7E2FC.3070807@oracle.com> Mime-Version: 1.0 Content-Type: multipart/signed; boundary="==_Exmh_1374169009_1526P"; micalg=pgp-sha1; protocol="application/pgp-signature" Content-Transfer-Encoding: 7bit Date: Thu, 18 Jul 2013 13:36:49 -0400 Message-ID: <4360.1374169009@turing-police.cc.vt.edu> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1685 Lines: 40 --==_Exmh_1374169009_1526P Content-Type: text/plain; charset=us-ascii On Thu, 18 Jul 2013 20:43:40 +0800, Bob Liu said: > Could you make some test by kernel compiling? Something like kernbench. > During my testing, I found that the swap ins/outs operations reduced but > the kernel compile time didn't reduce accordingly. If your kernel source tree is cache-cold, the swap in/out activity is probably hidden and ahrd to notice among all the disk I/O to read the source in. --==_Exmh_1374169009_1526P Content-Type: application/pgp-signature -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.13 (GNU/Linux) Comment: Exmh version 2.5 07/13/2001 iQIVAwUBUegnsAdmEQWDXROgAQIqJRAAn4jRug+VnfFEQCTMk0FjWCv5ivgBIPAU gxVe9WVW+kqWr9NAv8mDdVu4Mxwq/DMcfb3suXMCDl0mM/5jZjN8skuOqzQ4p6vi /3/STXQ4ec8AAYo6mO1Mn2BVN8CGi3mp+kDWvq4DqUgI3fUBlySPerAHH/jV/u5G QRgNGyKOD0s40RPC+VGdAP0RF6wjM9Y13TrED7c0U8OLuO+MMMN9kkKvTT/5X4lY XLu9u55+RU80QMvSCRlBbz2UA9AQcoQKwciNuWSrDqdGFOTO9UPNc9MYAfLL2zg+ f96voPLQ/TxO+xIhkuCOd4BaxEySV/rwGazqQ6LXqekRv/4hHAqXshu1iqneu14w cf6DaUekN8NzWRTFeHcWVCekhO3WVfem9HYsP7SekwdWQ9cXbWuEtOh/myBNBL7Q e7AbaLuYTu79R+QC+mCnRDpYoIxpQGiK2L/RfS5lh2jRZ5CsTt3OC6Wb93+S8Cij mzu8Ymq/uOtfCyDP6p2cOFsDP3fYd3S+xH0ofxzTzVeER4yacIeA5sysqL4UfD3A 52Ak56g7iWxB4JxqcA1KmLe6a8950xbvAQOPqc3fCafquSYvZwA7iA7RwDCPeAoW R2ehZ/Tw+lm4XuE507dc+5v4oyZzfE29vYeF+dTINiMYWKWvK26AaVTWOzbt1Pwt 7JMMGPZDSm0= =fe7g -----END PGP SIGNATURE----- --==_Exmh_1374169009_1526P-- -- 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/