Bug#748567: FTBFS: 'top' unavailable

[tony mancill]

On 05/18/2014 10:47 AM, Michael Tautschnig wrote:
> Hi Tony,
> 
> [...]
>> That explains the problem.  It looks like your system has 256GB on it,
> 
> Yes :-)
> 
>> but the default for top is to display in KB, so the '+' (which indicates
>> truncation) is tripping up the class that parses the output.
>>
>>> KiB Mem:  26465643+total, 11191324 used, 25346510+free,  1385252 buffers
>>> KiB Swap: 14483046+total,    40240 used, 14479022+free.  7171196 cached Mem
>>                     ^
>>
>> Currently, this test and class in general will fail on any system with
>> more 96GB on it.  And it seems wrong to patch the code to just accept
>> the truncated value. I don't see a way to set the scaling factor from
>> the command-line invocation (and it introduces decimal points to the
>> output anyway).  I don't have access to a system with that much memory
>> on it (none of the public porterboxes appear to have more than 32GB),
>> and am wondering if the -w (width) option will help.
>>
>> If you are willing, the output of the following on your build system
>> would helpful for creating a patch for large memory systems:
>>
>> 	top -n1 -b -w256
>>
> [...]
> 
> I did give this a try, but it has zero effect on the memory column, it seems
> this is a fixed width column! (Reducing -w to something ridiculous like -w20
> does have the expected effect.)
> 
> I'm afraid parsing the output of top is not going to get us anywhere here - why
> does it have to be top after all? Wouldn't /proc/meminfo be much easier anyway?
> (I don't see much portability with top after all...)

Hi Michael,

Thank you for giving that a try.  No argument about top not being a very
portable great choice by upstream.  I'll use /proc/meminfo for the
Debian patch.  It looks the same on linux, hurd, and kfreebsd, so it
shouldn't be any *less* portable.

Thank you for your help,
tony


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