Hello,
Thank you for having answered so quickly.
It totally makes sense, thank you for having put me back in the right
direction.
I'm still trying to figure out where this high interrupt load can come
from. To do so, I disabled all the devices I could in the BIOS to see if
any could be the cause:
- Network adapter
- Wireless cards
- USB stack
- Intel Turbo mode
- Camera, microphone and sound card
- Memory card reader
...
Then I tried booting the laptop in single user mode, but I'm still
experiencing high interrupt load on CPU0, despite nothing except the
shell was running.
Please find "top", "vmstat -iz" and "vmstat -s" outputs captured in
single user mode below:
# top
load averages: 0.71, 0.29, 0.12 23:38:12
3 processes: 2 idle, 1 on processor up 0:03
CPU0 states: 0.0% user, 0.0% nice, 0.0% system, 46.0% interrupt,
53.9% idle
CPU1 states: 0.0% user, 0.0% nice, 0.0% system, 0.0% interrupt, 100%
idle
CPU2 states: 0.0% user, 0.0% nice, 0.2% system, 0.0% interrupt,
99.8% idle
CPU3 states: 0.0% user, 0.0% nice, 0.0% system, 0.0% interrupt, 100%
idle
Memory: Real: 1728K/33M act/tot Free: 7773M Cache: 3744K Swap: 0K/8189M
PID USERNAME PRI NICE SIZE RES STATE WAIT TIME CPU COMMAND
1 root 10 0 304K 172K idle wait 0:01 0.00% init
91068 root 18 0 728K 800K sleep/2 pause 0:00 0.00% ksh
27957 root 28 0 360K 1156K onproc/0 - 0:00 0.00% top
# vmstat -iz
irq0/clock 185108 398
irq0/ipi 1357 2
irq144/acpi0 97 0
irq145/inteldrm0 28077 60
irq96/ppb0 0 0
irq97/sdhc0 0 0
irq98/ehci0 104 0
irq99/ahci0 26691 57
irq100/ichiic0 0 0
irq146/pckbc0 1112 2
irq147/pckbc0 39 0
Total 242585 521
# vmstat -s
4096 bytes per page
1998390 pages managed
1894589 pages free
795 pages active
13475 pages inactive
0 pages being paged out
49 pages wired
236833 pages zeroed
4 pages reserved for pagedaemon
6 pages reserved for kernel
2096481 swap pages
0 swap pages in use
0 total anon's in system
0 free anon's
345295 page faults
277216 traps
61136801 interrupts
166173 cpu context switches
13962 fpu context switches
49986 software interrupts
509915 syscalls
0 pagein operations
721 forks
29 forks where vmspace is shared
28 kernel map entries
222927 zeroed page hits
2222 zeroed page misses
0 number of times the pagedaemon woke up
0 revolutions of the clock hand
0 pages freed by pagedaemon
0 pages scanned by pagedaemon
0 pages reactivated by pagedaemon
0 busy pages found by pagedaemon
48253 total name lookups
cache hits (76% pos + 4% neg) system 0% per-directory
deletions 3%, falsehits 0%, toolong 0%
0 select collisions
I'm new to OpenBSD and lacking experience. I don't really know what else
to check or can do to go further.
Do you have any advice that could help me ?
Thanks so much !
Le 03/30/18 à 18:30, Theo de Raadt a écrit :
I'm facing a very high interrupt rate on irq0/clock on a Dell Latitude
E7450 laptop.
interrupt total rate
irq0/clock 419735 389
100 per cpu. 4 cpus.
Looks a lot like this:
interrupt total rate
irq0/clock 1591933050 599
on a 6 cpu machine.
Sorry, your interpretation is incorrect.
