From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from cloudserver020138.home.net.pl ([62.129.239.72]:43146 "EHLO cloudserver020138.home.net.pl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751157AbdIOKyW (ORCPT ); Fri, 15 Sep 2017 06:54:22 -0400 Message-ID: <59BBB15E.8010002@sarach.com.pl> Date: Fri, 15 Sep 2017 12:54:22 +0200 From: =?UTF-8?B?TWljaGHFgiBTb2tvxYJvd3NraQ==?= MIME-Version: 1.0 To: =?UTF-8?B?VG9tYXN6IEvFgm9jemtv?= CC: Linux fs Btrfs Subject: Re: defragmenting best practice? References: <20170831070558.GB5783@rus.uni-stuttgart.de> <20170912162843.GA32233@rus.uni-stuttgart.de> <20170914133824.5cf9b59c@jupiter.sol.kaishome.de> <20170914172434.39eae89d@jupiter.sol.kaishome.de> In-Reply-To: Content-Type: multipart/signed; protocol="application/pkcs7-signature"; micalg=sha1; boundary="------------ms080603060304080809010706" Sender: linux-btrfs-owner@vger.kernel.org List-ID: This is a cryptographically signed message in MIME format. --------------ms080603060304080809010706 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable On 09/14/2017 07:48 PM, Tomasz K=C5=82oczko wrote: > On 14 September 2017 at 16:24, Kai Krakow wrote:= > [..] >> > Getting e.g. boot files into read order or at least nearby improves >> > boot time a lot. Similar for loading applications. > [...] > Just please some example which I can try to replay which ill be > showing that we have similar results. Case #1 2x 7200 rpm HDD -> md raid 1 -> host BTRFS rootfs -> qemu cow2 storage -> guest BTRFS filesystem SQL table row insertions per second: 1-2 Case #2 2x 7200 rpm HDD -> md raid 1 -> host BTRFS rootfs -> qemu raw storage -> guest EXT4 filesystem SQL table row insertions per second: 10-15 --------------ms080603060304080809010706 Content-Type: application/pkcs7-signature; name="smime.p7s" Content-Transfer-Encoding: base64 Content-Disposition: attachment; filename="smime.p7s" Content-Description: S/MIME Cryptographic Signature MIAGCSqGSIb3DQEHAqCAMIACAQExCzAJBgUrDgMCGgUAMIAGCSqGSIb3DQEHAQAAoIILDzCC BSUwggQNoAMCAQICEGaJgd+Elrs3JDTMTgSd0fQwDQYJKoZIhvcNAQELBQAwdTELMAkGA1UE BhMCSUwxFjAUBgNVBAoTDVN0YXJ0Q29tIEx0ZC4xKTAnBgNVBAsTIFN0YXJ0Q29tIENlcnRp ZmljYXRpb24gQXV0aG9yaXR5MSMwIQYDVQQDExpTdGFydENvbSBDbGFzcyAxIENsaWVudCBD QTAeFw0xNjA3MjkxMjA0MjRaFw0xOTEwMjkxMjA0MjRaMGwxJjAkBgNVBA0MHUZvciBsb2dp biBhdXRoZW50aWNhdGlvbiBvbmx5MR0wGwYDVQQDDBRtaWNoYWxAc2FyYWNoLmNvbS5wbDEj 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