On Tue, Nov 22, 2011 at 04:37:30PM -0500, Jim Paris wrote: > Hi, > > Xterm is still *really* slow for me when background colors are set; > it's if jump-scrolling is disabled. For example: > > $ time xterm -geometry 80x25 -e 'for i in `seq 1 10000`; do echo -e "This is > line \e[40;31;01m$i\e[0m" ; done' > > real 0m23.052s > user 0m1.396s > sys 0m1.148s > > $ time xterm -geometry 80x25 -e 'for i in `seq 1 10000`; do echo -e "This is > line \e[31;01m$i\e[0m" ; done' > > real 0m0.781s > user 0m0.400s > sys 0m0.116s
I've added a note to the xterm FAQ about this. It's not a bug in xterm. https://invisible-island.net/xterm/xterm.faq.html#scroll_speed-2026 It's actually a defect in the Xorg server. In xterm patch #411, I've provided a workaround, so technically it's "fixed-upstream". -- Thomas E. Dickey <[email protected]> https://invisible-island.net
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