[Pkg-xfce-devel] Bug#453266: Bug#453266: Bug#453266: xfce4-terminal: text displays slowly and hogs CPU in some tabs and instances

Yves-Alexis Perez corsac at corsac.net
Tue Dec 4 06:47:51 UTC 2007

On mar, 2007-12-04 at 01:17 -0500, A. Costa wrote:
> On Sun, 02 Dec 2007 10:47:19 +0100
> Yves-Alexis Perez <corsac at corsac.net> wrote:
> > > ...there seems to be two speeds or "gears", low gear 'seq 10000'
> > > 6s (=~1800per/sec), high gear 999000 in 19-6=13s (=~.77000p/s).
> > 
> > Note that it may have to do with the number of lines you keep in
> > buffer (see terminal preferences). When you first run a command wich
> > outputs a lot, the terminal will have to allocate the memory. Then
> > it'll reuse the memory already allocated, so it'll be faster.
> My buffer is set to 1000 lines at present... which matches up with the
> 'seq 1000'.  But if it's a one-time memory allocation delay, then
> shouldn't the second run of 'seq' should be faster?  It wasn't; the
> "two-gear" effect was visible for every run.

Yeah but her I couldn't reproduce at all :)
> Yet tonight, I'm unable to reproduce the "two-gear" effect.  Such a
> "heisenbug".
> > ...Yet, I don't think it's a bug in terminal wich prevents you to use
> > it. This kind of test just stress it a lot but any terminal will be
> > more cpu-intensive when a lot of text is outputed fastly.
> Well when first I reported the bug the terminal speed was really slow;
> these stress tests were just attempts at reproducing that state.
> For sanity's sake I'll take a break for now, maybe some abler user will
> bump into it.

And don't forget to retry without compositing :)
Yves-Alexis Perez

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