Re: dd: change default blocksize from 512 to 4096

[Alain Williams]

On Tue, Apr 25, 2017 at 09:21:19AM +0200, address@hidden wrote:
> From 2c9f2ff2c7fd7dacd0131da6a37a9badc2fed62b Mon Sep 17 00:00:00 2001
> From: Luc Gommans <address@hidden>
> Date: Tue, 25 Apr 2017 07:31:05 +0200
> Subject: [PATCH] dd: default blocksize 4096, not 512
> 
> In modern use, a block size of 512 bytes is almost never advantageous.
> Never have I needed a block size lower than 4096. The speed difference
> is often great, for example 30MB/s instead of 120MB/s is not uncommon.

I agree and will often set the block size to something larger.

However: 512 has been the default for as long as I can remember - some 35 years.
Changing it could easily break scripts - then people would not love you!

The best that you can do is to add a paragraph talking about this in the man 
page.

Regards

-- 
Alain Williams
Linux/GNU Consultant - Mail systems, Web sites, Networking, Programmer, IT 
Lecturer.
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