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Fri, 01 Mar 2024 01:39:05 -0800 (PST) MIME-Version: 1.0 Received: by 2002:a5d:508f:0:b0:33e:1505:b7f6 with HTTP; Fri, 1 Mar 2024 01:39:03 -0800 (PST) In-Reply-To: <20240301103501.762d6606@ikilid> References: <6141BAD3-1BE6-40F5-B9BA-4BE94EAF752F@germteig.com> <20240301095358.268edad4@ikilid> <20240301103501.762d6606@ikilid> From: Lucio De Re Date: Fri, 1 Mar 2024 11:39:03 +0200 Message-ID: Subject: Re: [9fans] dd(1) takes very long To: 9fans <9fans@9fans.net> Content-Type: text/plain; charset=UTF-8 Topicbox-Policy-Reasoning: allow: sender is a member Topicbox-Message-UUID: 8f591562-d7af-11ee-b255-2fda028c7b06 Archived-At: =?UTF-8?B?PGh0dHBzOi8vOWZhbnMudG9waWNib3guY29tL2dyb3Vwcy85?= =?UTF-8?B?ZmFucy9UMGZkNjQ0NGFjYjljNzgxMS1NMzUxMWE0ZDhkOTJkMTIxMThmNTVm?= =?UTF-8?B?NmJmPg==?= List-Help: List-Id: "9fans" <9fans.9fans.net> List-Post: List-Software: Topicbox v0 List-Subscribe: Precedence: list Reply-To: 9fans <9fans@9fans.net> Content-Transfer-Encoding: quoted-printable List-Unsubscribe: , Topicbox-Delivery-ID: 2:9fans:437d30aa-c441-11e9-8a57-d036212d11b0:522be890-2105-11eb-b15e-8d699134e1fa:M3511a4d8d92d12118f55f6bf:1:MoN1D4BunKCVMed5nHzBF29Ij2RIf2cZx_O89e3o-V4 Increasing the dd block size (-bs 1024k or as big as the man pages allow) could make a big difference. On 3/1/24, Aleksandar Kuktin wrote: >>On Fri, 1 Mar 2024 10:08:25 +0100 >>Marco Feichtinger wrote: >> >> > and the computer isn't a SBC bitty box, the transfer rate is weirdly >> > low. >> >> Well, both disk are on the same machine. >> It's a Supermicro X7SPA-H-D525 board. >> >> -marco > > Well, that's not a bitty box. Wish I bought something like that instead > of my BananaPi. Anyway, someone more knowledgeable on Plan 9 than me is > needed. I can only speculate that the OS and hardware fight. I have > something similar happening on my desktop with modern hardware running > old software. I run GNU/Linux on it. For some reason I can't figure out, > transfers start off normal but then degrade to 10 Mbps or less after a > few GiB are transferred. If I try it with CentOS 7, it runs fine. But > when I use my own homegrown distro it's pathologic. Kernel version > 3.16.85, vanilla. > > -- > Svi moji e-mailovi su kriptografski potpisani. Proverite ih. > All of my e-mails are cryptographically signed. Verify them. > -- > You don't need an AI for a robot uprising. > Humans will do just fine. > -- > --=20 Lucio De Re 2 Piet Retief St Kestell (Eastern Free State) 9860 South Africa Ph.: +27 58 653 1433 Cell: +27 83 251 5824 ------------------------------------------ 9fans: 9fans Permalink: https://9fans.topicbox.com/groups/9fans/T0fd6444acb9c7811-M3511a= 4d8d92d12118f55f6bf Delivery options: https://9fans.topicbox.com/groups/9fans/subscription