Dominic Fandrey wrote:
Alexander Motin wrote:
It means that one of your CPUs spent most of it's time in interrupt
processing and so far from idle. What does `top -P` shows you? Where
have you seen that ~6% CPU load?
That is the load shown by the e17 CPU module. It's display has always
been in sync with top in the past, no longer though, it appears.
# top -PIS
last pid: 68235; load averages: 0.09, 0.16, 0.17
up 0+05:17:29 13:05:10
137 processes: 4 running, 117 sleeping, 16 waiting
CPU 0: 1.1% user, 0.0% nice, 1.1% system, 61.4% interrupt, 36.3% idle
CPU 1: 9.0% user, 0.0% nice, 3.4% system, 0.0% interrupt, 87.6% idle
Mem: 419M Active, 415M Inact, 416M Wired, 3752K Cache, 183M Buf, 716M Free
Swap: 4096M Total, 4096M Free
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
11 root 1 171 ki31 0K 16K RUN 1 286:42 93.46% idle: cpu1
23 root 1 -80 - 0K 16K RUN 0 126:54 59.96% irq16:
hdac0 uhci+
12 root 1 171 ki31 0K 16K RUN 0 179:27 40.09% idle: cpu0
1318 root 1 46 0 439M 312M select 1 12:55 1.76% Xorg
4361 musicpd 4 44 0 91164K 14412K ucond 1 1:57 0.78% mpd
Some things strike me as odd. The difference between the load reported
by powerd and top is still very significant and of course the high
interrupt load.
powerd now reports/uses summary load of all CPUs (it can be bigger then
100%), while top shows average.
I've got a mouse with a 1khz report rate (the only connected USB
device), but unplugging it doesn't change the load. Neither does
stopping moused (I'm running the system without HAL). There also
is a fingerprint reader, but it is only detected by ugen.
I would start from identifying all devices sharing that IRQ and trying
to disable them (or unload their drivers) one by one. `systat -vm 1`
will show you how much interrupts actually happens there per second.
On most of modern systems you can make hdac0 to not share that IRQ by
enabling MSI there with hint.hdac.0.msi=1 in loader.conf.
--
Alexander Motin
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