GNU bug report logs - #6524
du now uses less than half as much memory, sometimes

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Message #14 received at 6524 <at> debbugs.gnu.org (full text, mbox):

From: Pádraig Brady <P <at> draigBrady.com>
To: Jim Meyering <jim <at> meyering.net>
Cc: 6524 <at> debbugs.gnu.org
Subject: Re: bug#6524: du now uses less than half as much memory, sometimes
Date: Mon, 28 Jun 2010 12:08:33 +0100

On 28/06/10 09:05, Jim Meyering wrote:
> Thank you for the quick testing!
> So far I've been unable to spot the cause or to reproduce that, but since
> the way the new code works depends on the range of inode number values,
> that's not too surprising.  You have some very large inode numbers in
> that hierarchy, and that's exercising code that is not run in my tests.
> 
> It always succeeds like this:
> 
>   586M    /home/meyering/gcc

What I did exactly was:
./bootstrap --gnulib-srcdir=/home/padraig/git/gnulib; ./configure --enable-gcc-warnings; make

However now having worked on another branch and switched back
and repeated the above, I can't reproduce :(
I'd chalk this down to build issues though I can't see what's changed.

$ ./src/du -hs ~/f8/gcc
2.9G    /home/padraig/f8/gcc

$ find ~/f8/gcc -printf "%D:%i\n" | sort -t: -k2,2n | tail -n10
2056:9765506
2056:9765506
2056:9765507
2056:9765507
2056:9765511
2056:9765511
2056:9765512
2056:9765512
2056:9806497
2056:9806497

$ df -T ~/f8/gcc
Filesystem    Type   1K-blocks      Used Available Use% Mounted on
/dev/sda8     ext3    38593360  34356772   3439768  91% /old_home

There is no significant difference in speed between
the old new and your new memory efficient one.

cheers,
Pádraig.

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