On 01/21/18 16:41, Johannes Lundberg wrote:
Finally I found the root to the problem that's been having me puzzled for
the last week.
I started playing UT2004 on my laptop while away from home. Worked
perfectly. When I'm home and connect external display+mouse/keyboard, I get
weird random lag.
It is intr process that goes up to 100% CPU usage (swi4: clock) for a
couple of seconds every 30 seconds or so, but only when I'm moving around
in the game. To move around you need to hold down any of the wasd-keys.
Turns out, the interrupt storms only happen when I use my external
keyboard, not with the laptop keyboard.
The internal keyboard is:
atkbdc0: <Keyboard controller (i8042)> port 0x60,0x64 irq 1 on acpi0
atkbd0: <AT Keyboard> irq 1 on atkbdc0
and external (Microsoft sculpt ergonomic desktop):
ugen0.2: <Microsoft Microsoft 2.4GHz Transceiver v9.0> at usbus0
ukbd0: <Microsoft Microsoft 2.4GHz Transceiver v9.0, class 0/0, rev
2.00/7.97, addr 1> on usbus0
The game runs with a linux binary. 32/64bit both act the same.
It uses libSDL-1.2 from /compat/linux/lib for rendering but not sure about
I tried lowering the key repeat rate both with xset and kbdcontrol but it
has no effect.
I don't have any wired USB keyboard to try with.
Anyone have a clue to what's going on?
Hardware is Dell Latitude E7270
What does "vmstat -i" say?
The issue can also be caused by a timer with a small or zero timeout.
This can be checked by setting:
in /boot/loader.conf and rebooting.
email@example.com mailing list
To unsubscribe, send any mail to "freebsd-current-unsubscr...@freebsd.org"