Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757710AbYJVVFX (ORCPT ); Wed, 22 Oct 2008 17:05:23 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1757527AbYJVVEl (ORCPT ); Wed, 22 Oct 2008 17:04:41 -0400 Received: from ey-out-2122.google.com ([74.125.78.25]:3718 "EHLO ey-out-2122.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753547AbYJVVEi (ORCPT ); Wed, 22 Oct 2008 17:04:38 -0400 DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=message-id:date:from:to:subject:cc:in-reply-to:mime-version :content-type:content-transfer-encoding:content-disposition :references; b=WWaDUIWEU2GfjcmEQojT93BS0brRaKK7i9aSuPXKqtZRpBgEcgsuUkNsVb4KFAYvYf P5GHsC+iiWIdHRlSnNBCuLjk9eZBG91/sReK4b0TQT6ZAkac88Ro7Is5mSSMle85su7H ciQSOwojqDehJ1dHmJrZYipNYCV0LoMkGOipg= Message-ID: Date: Wed, 22 Oct 2008 23:04:35 +0200 From: "=?ISO-8859-1?Q?Fr=E9d=E9ric_Weisbecker?=" To: sbs Subject: Re: high %CPU values after upgrading to the last stable kernel Cc: linux-kernel@vger.kernel.org In-Reply-To: <53cc795f0810221237u1b5ece4dq477be67903dd5879@mail.gmail.com> MIME-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Content-Disposition: inline References: <53cc795f0810221237u1b5ece4dq477be67903dd5879@mail.gmail.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2696 Lines: 60 2008/10/22 sbs : > after upgrading from 2.6.16 to 2.6.27 kernel top shows a strange > picture of extremely highly %CPU values. > > # top -V > top: procps version 3.2.6 > > > # top > top - 04:24:06 up 7 days, 1:12, 1 user, load average: 2.28, 2.03, 2.00 > Tasks: 183 total, 2 running, 181 sleeping, 0 stopped, 0 zombie > Cpu(s): 36.2% us, 2.4% sy, 0.0% ni, 56.1% id, 4.7% wa, 0.1% hi, 0.5% si > Mem: 12473092k total, 11169060k used, 1304032k free, 16k buffers > Swap: 2048248k total, 636k used, 2047612k free, 1257988k cached > > PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND > 19824 b 20 0 92212 17m 5420 S 4308 0.1 1:39.49 httpd > 14396 b 20 0 92716 28m 16m S 3721 0.2 38:47.38 httpd > 14024 b 20 0 92376 28m 16m S 2437 0.2 51:49.68 httpd > 7415 b 20 0 96876 40m 24m D 2146 0.3 93:59.72 httpd > 8182 b 20 0 94500 36m 21m S 1997 0.3 111:41.60 httpd > 13461 b 20 0 94240 31m 17m S 1439 0.3 48:43.71 httpd > 8466 b 20 0 92036 32m 21m S 1136 0.3 107:37.90 httpd > 17620 b 20 0 92660 23m 11m S 1003 0.2 10:55.03 httpd > 14025 b 20 0 92000 28m 16m S 720 0.2 51:49.49 httpd > 3808 nobody 20 0 3013m 2.9g 592 S 714 24.7 343030:50 memcached > 10 root 15 -5 0 0 0 S 714 0.0 11881:28 ksoftirqd/3 > 18487 b 20 0 91416 20m 9572 S 580 0.2 8:29.20 httpd > 13252 b 20 0 93408 30m 17m S 580 0.3 45:19.69 httpd > 17525 b 20 0 93208 23m 10m S 566 0.2 18:34.40 httpd > 14760 b 20 0 93452 28m 15m S 534 0.2 57:34.65 httpd > 3804 nobody 20 0 2995m 2.9g 592 S 441 24.6 378908:26 memcached > 12209 b 20 0 92312 28m 16m S 279 0.2 63:28.45 httpd > > > > %CPU is 4308 here and it's not the highest value. > i havent seen that on any previous kernel on the same server. > > should i upgrade procps or downgrade kernel then to get proper values back? :) > or is it a feature of the new kernel? > > thank you > -- > 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/ > Hi, It really depends on what your box is doing at the time you capture the cpu usage. And it really depends too of your kernel config... -- 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/