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urxvt painfully slowz with radeon!!
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Guru
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Joined: 15 Oct 2012
Posts: 521

PostPosted: Sat Dec 29, 2012 6:27 pm    Post subject: urxvt painfully slowz with radeon!! Reply with quote

hi,

Does radeon have some sort of 2D accel? I've noticed that when a terminal is crowded with characters and colors sometimes the cursos becomes slow.

This is most prominent with these two programs:

Code:
app-vim/matrix
app-misc/cmatrix


When the screen is filled with characters it starts moving slow and stutter with one core at 100% usage. How to make urxvt fully accelerated? And when moving the window around with cmatrix running takes a few seconds to appear on its new place.

Xorg.0.log has a funny message

Code:
VRAM usage limit set to 205081K


But my card has 1GB of GDDR5 ram.

0ad is faster than urxvt running cmatrix.

Oo
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VoidMage
Watchman
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Joined: 14 Oct 2006
Posts: 5618

PostPosted: Sat Dec 29, 2012 10:26 pm    Post subject: Reply with quote

You didn't say how large the terminal is, but regardless even on an r200 the speed ain't that bad in an vte-based term, so chances are it's either urxvt or your kernel config.
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Joined: 15 Oct 2012
Posts: 521

PostPosted: Sun Dec 30, 2012 12:27 pm    Post subject: Reply with quote

Terminal size shouldn't matter. And I tried small and full screen. The slow down and high cpu usage is with both.

No way is the kernel, as I said I can play 0ad with gfx maxed out without a prob. So why a dumb terminal that only supports a very primitive set of colors 256 and just displays simple characters (nothing complex there) brings the card down to a crawl?

I am wondering this.
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