undefined | Better HN

0 pointsubercow1310y ago0 comments

Depending how you're measuring it, I believe it could be because urxvt's output is buffered by default whereas xterm's isn't. That may mean 16.7ms (= 1 second / 60Hz) is added to the measured latency, though the extra time would have no effect in practice.

ed: or maybe thats excluded from the measurement but urxvt is double buffered by default?

0 comments

frankling10y ago

You're right, urxvt refreshes at a maximum of 60Hz (line 1021 in http://cvs.schmorp.de/rxvt-unicode/src/command.C?view=markup). Above, I mistakenly measured only urxvt. Rxvt does a select() with a timeout of 5ms before redrawing (lines 1600 and 1664 in "src/command.c"). The total latency with rxvt is about 5.7ms.

j / k navigate · click thread line to collapse

0 pointsubercow1310y ago0 comments

ed: or maybe thats excluded from the measurement but urxvt is double buffered by default?

0 comments

frankling10y ago

j / k navigate · click thread line to collapse