From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from lists.gentoo.org (pigeon.gentoo.org [208.92.234.80]) by finch.gentoo.org (Postfix) with ESMTP id 2950B1387FD for ; Wed, 11 Jun 2014 12:41:21 +0000 (UTC) Received: from pigeon.gentoo.org (localhost [127.0.0.1]) by pigeon.gentoo.org (Postfix) with SMTP id 0F465E0B4F; Wed, 11 Jun 2014 12:41:16 +0000 (UTC) Received: from postler.lichtfels.com (postler.lichtfels.com [78.46.92.195]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by pigeon.gentoo.org (Postfix) with ESMTPS id D86C6E0B27 for ; Wed, 11 Jun 2014 12:41:14 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by postler.lichtfels.com (Postfix) with ESMTP id D60D9125D1 for ; Wed, 11 Jun 2014 14:41:12 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=xunil.at; s=mailout; t=1402490472; bh=n50cVhdPIS7FDslI8a5/nnagJZqH2g1R9A6HCMb+QkQ=; h=Date:From:Reply-To:To:Subject:References:In-Reply-To; b=nNX7zENvszdnOvfFuZahacXdrPE1bo6mordCHlwAMtG79hdsO02c38HtpFk/INrgp AZHO6oD+3fZkgjWjdFQnjWbFlIB5iPGXTASExE+utxuIueOivbXK7Woo4lpR8Pq6Ms Zzsx4JPOsaweYpInVGoY8H3159lC9Urh4OCFLAbE= Received: from postler.lichtfels.com ([127.0.0.1]) by localhost (postler.lichtfels.com [127.0.0.1]) (amavisd-maia, port 10024) with LMTP id 05468-01 for ; Wed, 11 Jun 2014 14:41:10 +0200 (CEST) Received: from hiro.oops.intern (unknown [IPv6:2001:15c0:65ff:8742:c076:5c0e:5bbe:a49e]) (using TLSv1 with cipher ECDHE-RSA-AES128-SHA (128/128 bits)) (No client certificate requested) by postler.lichtfels.com (Postfix) with ESMTPSA id 4F29F125CC for ; Wed, 11 Jun 2014 14:41:09 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=xunil.at; s=mailout; t=1402490470; bh=n50cVhdPIS7FDslI8a5/nnagJZqH2g1R9A6HCMb+QkQ=; h=Date:From:Reply-To:To:Subject:References:In-Reply-To; b=S7xrMzFx3P+VYK7DGD1xPAfhDF9YQ5WVPOqxu19secz/ud6juEUetp9O3d3A8o4II bV9akzXyZ9bqtS7VjrVe/U3po/QCe0QqnRoIHnrO1r9ujQmLQaCJqrllZULq/DySFU Fh4fnl8c1hoRpr6jw/7i5sd/N72KOsRHUO+pBn88= Message-ID: <53984E64.4000408@xunil.at> Date: Wed, 11 Jun 2014 14:41:08 +0200 From: "Stefan G. Weichinger" Organization: oops! User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:24.0) Gecko/20100101 Thunderbird/24.5.0 Precedence: bulk List-Post: List-Help: List-Unsubscribe: List-Subscribe: List-Id: Gentoo Linux mail X-BeenThere: gentoo-user@lists.gentoo.org Reply-to: gentoo-user@lists.gentoo.org MIME-Version: 1.0 To: gentoo-user@lists.gentoo.org Subject: Re: [gentoo-user] Intel(R) C600 SAS Controller References: <537EFE48.70804@xunil.at> <5380F1F9.7030105@xunil.at> <53837E48.40208@xunil.at> <53839C9F.8040509@xunil.at> <53848D1B.1000108@xunil.at> <53981F0F.2010200@thegeezer.net> <539822A3.4010302@xunil.at> <53982C02.6040808@thegeezer.net> <539830A8.4090500@xunil.at> <5398325C.5060804@thegeezer.net> <53983441.9010004@xunil.at> <53983B09.6090307@thegeezer.net> <53983BD2.60104@xunil.at> <539842FB.9050907@thegeezer.net> In-Reply-To: <539842FB.9050907@thegeezer.net> X-Enigmail-Version: 1.6 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit X-Virus-Scanned: Maia Mailguard 1.0.2c X-Archives-Salt: 1d7b709e-04ff-4c77-b6a9-9d0881c5027f X-Archives-Hash: 6baf03355b9799d74a93474ab2930f03 Am 11.06.2014 13:52, schrieb thegeezer: > ok baffling. > sdc i already said would be slower but not this much slower > it certainly should not be slower than the lvm that sits on top of it! > i can't see anything in the cgroups that stands out, maybe someone else > can give a better voice to this. > > all i can think is there is other IO happening > in atop if you can highlight any line that begins LVM CPU or DSK and > paste it in to a reply - with no virtualmachines running and no dd or > anything. > then run a dd as before and highlight the lines in atop while it is > running (maybe increase count to 1000 to give yourself a chance) and > paste in here too I did a test with a sysresccd from 2013 (that is kernel 3.4.52 ... phew) Just booted, "vgchange -ay" and then the dd-test from LV to /dev/null -> with or without count=500 I get around 340-350 MB/s ! So my kernel-config seems buggy or I should downgrade to something older? Aside from that I checked the firmware of the controller, it has the latest release. Stefan