I was able to do a couple of low-risk things to greatly improve
performance...
1) Firstly, comment out the ionice and cpu nice calls in the screen-
profiles-status wrapper. The idea is good, but this drastically slows
down the initial launch of screen, which makes for a very bad
experience, especially on low powered systems. I first noticed this
playing with ARM. But also noted that on my high-powered laptop,
screen's startup time was 1.5s vs. 0.5 seconds. I have a better
approach for 'nice' on these status items in Karmic.
2) The updates-available status is by far the slowest status item of
all. I found a really neat, trivial approach to tremendously improve
response time. Background the updates-available fetching and write
these to a cache file, to be picked up at next run. We already support
reading from cache file, so this is really a trivial fix.
3) There was one superfluous call of lsb_release (surprisingly
expensive) in the release script. Drop that.
All in all, very low-risk, high-yield fixes, IMHO.
:-Dustin
** Package changed: ubuntu => screen-profiles (Ubuntu)
** Changed in: screen-profiles (Ubuntu)
Importance: Undecided => High
** Changed in: screen-profiles (Ubuntu)
Status: New => In Progress
** Changed in: screen-profiles (Ubuntu)
Milestone: None => ubuntu-9.04
** Changed in: screen-profiles (Ubuntu)
Assignee: (unassigned) => Dustin Kirkland (kirkland)
** Changed in: screen-profiles
Status: Fix Committed => Fix Released
** Changed in: screen-profiles (Ubuntu)
Status: In Progress => Fix Committed
--
Sluggish performance with some status notifications enabled
https://bugs.launchpad.net/bugs/360759
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