[Reportbug-maint] Bug#648513: try dlocate for faster package name lookup

[Eduard Bloch]

Package: reportbug

Version: 6.3
Severity: wishlist

Hi,

when user specifies the name of the buggy binary then a lookup for the
binary package name is suggested. This is currently done using 
dpkg --search ... , which is ok but painfully slow when disk load is
high.

I suggest to use dlocate as primary alternative if dlocate is present.
The justification is obvious, just compare the numbers of syscalls, and
many of them are IO bound:

~ $ strace -f -o /dev/stdout dpkg --search bin/xfce4-keyboard-settings | wc -l
35825
~ $ strace -f -o /dev/stdout dlocate -S bin/xfce4-keyboard-settings | wc -l
3012

Regards,
Eduard.


-- Package-specific info:
** Environment settings:
DEBEMAIL="blade at debian.org"
DEBFULLNAME="Eduard Bloch"
DEBNAME="Eduard Bloch"
INTERFACE="text"

** /home/ed/.reportbugrc:
reportbug_version "4.10.2"
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-- System Information:
Debian Release: wheezy/sid
  APT prefers unstable
  APT policy: (500, 'unstable'), (500, 'testing'), (1, 'experimental')
Architecture: amd64 (x86_64)

Kernel: Linux 3.1.0-1-amd64 (SMP w/4 CPU cores)
Locale: LANG=de_DE.UTF-8, LC_CTYPE=de_DE.UTF-8 (charmap=UTF-8)
Shell: /bin/sh linked to /bin/bash

Versions of packages reportbug depends on:
ii  apt               0.8.15.9
ii  python            2.7.2-9 
ii  python-reportbug  6.3     

reportbug recommends no packages.

Versions of packages reportbug suggests:
ii  debconf-utils                              1.5.41     
ii  debsums                                    2.0.49     
ii  dlocate                                    1.02       
ii  emacs23-bin-common                         23.3+1-4   
ii  exim4                                      4.77-1     
ii  exim4-daemon-light [mail-transport-agent]  4.77-1     
ii  file                                       5.09-2     
ii  gnupg                                      1.4.11-3   
ii  python-gtk2                                2.24.0-2   
ii  python-gtkspell                            <none>     
ii  python-urwid                               <none>     
ii  python-vte                                 1:0.28.2-1 
ii  xdg-utils                                  1.1.0~rc1-2

Versions of packages python-reportbug depends on:
ii  apt               0.8.15.9
ii  python            2.7.2-9 
ii  python-debian     0.1.21  
ii  python-debianbts  1.10    
ii  python-support    1.0.14  

python-reportbug suggests no packages.

-- no debconf information

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