Red Hat Bugzilla – Bug 244175
yumex causes X to work harder than seems necessary
Last modified: 2008-05-15 13:21:57 EDT
Description of problem:
When yumex is in the running transaction mode and drawing progress bars,
the X server shoots up to around 85% of the cpu as though (just guessing here)
the bars are being drawn over and over in a tight cpu loop even if there
is no actual progress change that should show up yet. When yumex is finished,
the X server drops back to its normal 1% or so (as shown with top).
Version-Release number of selected component (if applicable):
I see this behavior every time I happen to be running top and doing
updates with yumex at the same time.
Steps to Reproduce:
1. see description
less beating on X server
I certainly can't call this a critical problem, but it is stealing cycles
that could be used actually doing the install, so I thought I'd mention
it in a bugzilla :-).
please try to checkout the latest yumex SVN and try it, i have made some changes
to make yumex more gentle to X.
Yumex SVN checkout instructions here:
I'm updating my system now with the SVN version, and I don't notice much
difference. During the downloading phase, Xorg stays around 3% tops when
yumex is showing download progress, but once it hits "Running Transaction"
Xorg jumps up to around 80% while the progress bar is being updated
(and drops back down during the pause between finishing one package and
Since I'm installing lots of big updates like evolution, I get a good
chance to watch it. Xorg seems to work harder the bigger the package is
and the slower the progress bar runs up to 100%.
Please try again with current SVN version, i have made some changes so the
progressbar widgets is not updated if there is no changes in the current progress.
I don't know, it might be a little better, but it still seems to hit Xorg harder
when the progress bar is moving slower (kernel and kernel-devel both managed
to push it up above 80% in tonight's update :-).
What system are you checking on.
ON my systems running yumex installing something big like openoffice, i see the
yumex is running and top i running in a terminal window, while download X looks
fine, if i move the terminal over the yumex window so it has to redraw the X
peak the CPU for a couple of second, and then fall down again.
Under the installation the X peeks the CPU to 25-50%. My systems are new and
fast, so it might look worse on older systems.
I will try to reduce it more, if i can
Actually the absolute numbers didn't stand out so much as the contrast
between when it is downloading and when it is running transaction, drawing
very similar progress bars in both cases with somewhere around 1% during
download and 80% during transaction.
My system is described in more detail here:
The short summary is: AMD Athlon 64 X2 4400+ dual core cpu, 2 gig memory.
In any case, like I said in the initial report, doesn't seem like
an earth shattering problem (if its actually a problem at all :-).
I can watch the described behavior, too.
On my installation the yumex console window seems to be resized a lot during
transaction. The lower border of the console window is jumping all the time.
Maybe there is a redraw/resize of the console window all the time.
Please retest with yumex -1.9.10
but still up and down jumping of the lower border of the console window in yumex.
The progress bars and the the text above the progress bars is jumping, too.
Looks like the space between the lower border of the window and the lower border
of the console is reorganized quickly from time to time.
btw.: German surface... did not try with other language.
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