synaptic slow search, package list change, first instalation

[Kamil Lenartowicz]

Binary package hint: synaptic

Synaptic package manager is really slow application,
I wrote path which solves several problems like:
- slow search in descriptions and maintainers
- slow sub view change
- slow first instalation "Reading database..."

I've added:

* background preload after openCache:
    -preload maintainers and descriptions (sort orders on file and offset) (time 900ms; 300ms if not first run)
    -preload /var/lib/dpkg/info/*.list files needed by dpkg (time 10s with nice -19; 300ms if not first run)

    Gain:
        -first search "name and description" (time from 12s to 200ms)
        -first "Reading database...": few times faster

* remove unnecessary refreshView after subview list click
    Gain: click on static subview list loads package list immediately (not after 300ms-400ms)

I did not really test my code (various environments etc).

My changes are in path, I've worked on synaptic 0.63.1ubuntu7 sources.

[Kamil Lenartowicz (kamil-lenartowicz)]

Some timings:

Without path:
change subview: 410ms
commit changes: first: 15s second: 2.8s
description search: first: 12s second 1.7s

With path:
change subview: 3ms
commit changes: first: 4.4s second: 2.8s
description/maintainer search: first: 200ms second 160ms

[gf (gf-interlinks-deactivatedaccount)]

Hello Kamil,
Thank you for submitting this bug and reporting a problem with synaptic. You made this bug report some time ago and Ubuntu has been updated since then.

Could you confirm that this is no longer a problem and that we can close the ticket?
If it is still a problem, are you still interested in finding a solution to this bug?
If you are, could you let us know and run the following (only once):
apport-collect BUGNUMBER
and upload the updated logs and and any other logs that are relevant for this particular issue.

Thank you again for helping make Ubuntu better.
G

[Launchpad Janitor (janitor)]

[Expired for synaptic (Ubuntu) because there has been no activity for 60 days.]