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

Previous Next

Full log

Message #59 received at 17505 <at> debbugs.gnu.org (full text, mbox):

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: Re: dd statistics output
Date: Wed, 16 Jul 2014 23:17:19 +0100

On 07/16/2014 11:09 PM, Christian Groessler wrote:
> On 07/16/14 15:42, Pádraig Brady wrote:
>> 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.
> 
> 
> Sorry, I cannot follow. Which inconsistent output are you referring to?
> 
> regards,
> chris

It's a bit of an edge case, but if working with 1024 base quantities,
rarely one might get 1000 based statistics as the selector is essentially:

     if ((n_written % 1000) && ! (n_written % 1024))
       human_opts |= human_base_1024;

So if SIGUSR1 was sent after 1000 blocks were written for example,
then SI stats would be printed rather than IEC.
Yes it's quite the edge case, and not especially problematic I think,
but worth mentioning.

thanks,
Pádraig.

Previous Next

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