Messages in this thread | ![/](/images/icornerl.gif) | | Date | Mon, 31 Mar 2003 09:45:20 +0100 | From | P@draigBra ... | Subject | Re: very poor performance in 2.5.66[-mm1] |
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David Mansfield wrote: > Hi list. > > After all of the rave reviews about the interactivity fixes (both regular > and I/O scheduler related), I decided to give the 2.5.latest a try on my > desktop machine (system described below) > > I started X, everything seemed fine, maybe a bit faster. I opened a > 'gnome-terminal' and typed 'ls -ltr'. Wow, it was 20x slower. > > Here are the timings for 'ls -ltr': > > 2.5.66-mm1: 'ls -ltr' 31 seconds > 2.5.66-mm1: 'ls -ltr | cat' 2 seconds > 2.4.18-rhlatest: 'ls -ltr' 1.14 seconds
I've noticed this on all kernels and it seems scheduling related hence why the latest triggers it for you. As far as I can see most times writing data to gnome-terminal WHICH CAUSES IT TO SCROLL it takes a ridiculous amount of time. If I take some CPU time away from gnome-terminal by the official "window wiggling" method it runs much faster. Note it's not rendering (antialiasing) related as I turned that off with the same effect.
Pádraig.
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