On Sat, 16 Jul 2016, Staven wrote: > On Sat, Jul 16, 2016 at 02:33:18PM +0300, Alexander Monakov wrote: > > This causes lots of useless communication between the X server and dwm every > > time the mouse pointer is moved, even when nothing could possibly change as > > a result (e.g. if Xinerama is not compiled in, or only one monitor is > > present). > > On my system, the resulting syscalls-per-second count in dwm is about 490, > > if > > the mouse if moved continuously. > > Why is this a problem? > I mean, I just found out that I wiggle my cursor really hard, dwm CPU usage > goes up to 3%. Is that why?
Yes, that is why. As to why this is a problem, it's a kind of software bloat, just not in static code size, but rather in runtime cost (that wasn't always present, but appeared when a feature was added). Given that the issue is not very hard to avoid, I decided to raise it on the mailing list and propose my solutions. Alexander
