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Why is terminal / console text scrolling so slow?
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Mac Elite
Join Date: Sep 2000
Location: Berkeley, CA
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I've yet to see this problem addressed, and it's not a major problem, but it gets annoying at times.
In Linux, the text scrolling is fast and as new lines are printed to the screen, the refresh is quick. In X, you drop into console mode or use a terminal while compiling programs and the scrolling is so slow as you can see the whole screen being refreshed to accomodate the new output.
Does anyone understand what I mean? I'll elaborate further if I'm not making any sense.
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Liberty - Free Markets - Peace
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Senior User
Join Date: Dec 2001
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Offline
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Originally posted by milhous:
I've yet to see this problem addressed, and it's not a major problem, but it gets annoying at times.
In Linux, the text scrolling is fast and as new lines are printed to the screen, the refresh is quick. In X, you drop into console mode or use a terminal while compiling programs and the scrolling is so slow as you can see the whole screen being refreshed to accomodate the new output.
Does anyone understand what I mean? I'll elaborate further if I'm not making any sense.
Apple's Terminal.app is a woefully inadequate terminal emulator. It has a very slow redraw, thinks it is VT100 when it is barely so, doesn't understand what terminal capabilities it actually has (run screen and suddenly you've got much better ANSI/ncurses/slang color support), has no mouse support, doesn't live resize, etc. If you want a real terminal, intsall XFree86 and use xterm, eterm, rxvt, or gnome-terminal, kterm, or whatever you like. Despite XDarwin not yet having hard acceleration(OpenGL is in CVS now!), xterm is *much* faster than Terminal.app. If you dread installing UNIX legacy crap on your Mac (I don't!), you can give GLTerm a shot (check versiontracker), but it is shareware, and kinda buggy.
For me, console mode is quite fast (granted I haven't used it since 10.1), although certainly not as fast as the much more mature Linux framebuffer driver.
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"Think Different. Like The Rest Of Us."
iBook G4/1.2GHz | 1.25GB | 60GB | Mac OS X 10.4.2
Athlon XP 2500+/1.83GHz | 1GB PC3200 | 120GB | Windows XP
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Mac Elite
Join Date: May 2001
Location: Earth
Status:
Offline
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Originally posted by milhous:
I've yet to see this problem addressed, and it's not a major problem, but it gets annoying at times.
In Linux, the text scrolling is fast and as new lines are printed to the screen, the refresh is quick. In X, you drop into console mode or use a terminal while compiling programs and the scrolling is so slow as you can see the whole screen being refreshed to accomodate the new output.
Does anyone understand what I mean? I'll elaborate further if I'm not making any sense.
I don't find Terminal slow at all... and I've noticed that they have greatly improved speed (particularly scrolling) in console mode in Jaguar (compared to 10.1 which was unusable in console mode because it was too slow).
Last time I tried xterm with XFree (under 10.1) it was *much* slower than Termnial... but I guess things have improved since then, and we'll probably see full acceleration under X11 at the end of january...
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