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identity=mailfrom; envelope-from="sirjofri+ml-9fans@sirjofri.de"; helo=sirjofri.de; client-ip=5.45.105.127 Received: from sirjofri.de (sirjofri.de [5.45.105.127]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by tb-mx0.topicbox.com (Postfix) with ESMTPS for <9fans@9fans.net>; Fri, 1 Mar 2024 07:45:10 -0500 (EST) (envelope-from sirjofri+ml-9fans@sirjofri.de) Received: from dummy.faircode.eu ([31.16.254.61]) by sirjofri.de; Fri Mar 1 13:44:54 +0100 2024 Date: Fri, 1 Mar 2024 13:44:53 +0100 (GMT+01:00) From: sirjofri To: 9fans <9fans@9fans.net> Message-ID: <8473cc79-c0b7-40a9-8604-cdacdd154923@sirjofri.de> In-Reply-To: <254FA221-AFDF-4D5F-9A54-C5D9DEC7E3B5@quintile.net> References: <6141BAD3-1BE6-40F5-B9BA-4BE94EAF752F@germteig.com> <20240301095358.268edad4@ikilid> <20240301103501.762d6606@ikilid> <254FA221-AFDF-4D5F-9A54-C5D9DEC7E3B5@quintile.net> Subject: Re: [9fans] dd(1) takes very long MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Correlation-ID: <8473cc79-c0b7-40a9-8604-cdacdd154923@sirjofri.de> Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 8eaf2ace-d7c9-11ee-bcff-ae82028c7b06 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UMGZkNjQ0NGFjYjljNzgxMS1NMDhkYjZjNmI5OTJkOWU1ZWZjNGFj?= =?UTF-8?B?MWE2Pg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M08db6c6b992d9e5efc4ac1a6:1:RMW0F7o4p9kiG15HwTbK3TmVo9E7UvFlbjzRiarh_qA 01.03.2024 11:38:06 Steve simon : > A larger block size as lucio says, and also try two dd's with a pipe betw= een them, > one reading and one writing. dd(1) is single threaded but you have two as= ynchronous physical devices. You can probably even pipe it through some compressor, but I doubt you'll g= et much performance out of it in a case like this (local machine). I guess = it's more useful for separate machines with slower network connections. sirjofri ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T0fd6444acb9c7811-M08db6= c6b992d9e5efc4ac1a6 Delivery options: https://9fans.topicbox.com/groups/9fans/subscription