GNU bug report logs - #17505
Interface inconsistency, use of intelligent defaults.

Previous Next

Full log

View this message in rfc822 format

From: Pádraig Brady <P <at> draigBrady.com>
To: Christian Groessler <chris <at> groessler.org>
Cc: 17505 <at> debbugs.gnu.org, coreutils <at> gnu.org
Subject: bug#17505: dd statistics output
Date: Wed, 16 Jul 2014 14:42:21 +0100

On 07/16/2014 10:38 AM, Pádraig Brady wrote:
> On 07/16/2014 03:45 AM, Christian Groessler wrote:
>> Hi,
>>
>> the final output of 'dd' is in "SI mode" (or how to call it). It uses 10^6 instead of 2^20 for "megabyte".
>>
>> Example:
>>
>> $ dd if=/dev/zero of=/dev/null bs=65536 count=4096
>> 4096+0 records in
>> 4096+0 records out
>> 268435456 bytes (268 MB) copied, 0.0248346 s, 10.8 GB/s
>> $
>>
>> Is there a switch to display in "traditional" units, I'd like to have
>>
>> 268435456 bytes (256 MB) copied, ...
> 
> http://bugs.gnu.org/17505#37 was proposed do the following automatically (depending on the amount output):
> 
>   268435456 bytes (256 MiB) copied, 0.0248346 s, 10.8 GB/s
> 
> However that wasn't applied due to inconsistency concerns.
> I'm still of the opinion that the change above would be a net gain,
> as the number in brackets is for human interpretation, and in the vast
> majority of cases would be the best representation for that.

Note another reason to _not_ apply the patch is that
requests to print the statistics can come async through SIGUSR1,
and thus increase the chances of inconsistent output.

thanks,
Pádraig.

Previous Next

GNU bug tracking system
Copyright (C) 1999 Darren O. Benham, 1997,2003 nCipher Corporation Ltd, 1994-97 Ian Jackson.