Re: Interrupt storm

[SAITOH Masanobu <msaitoh%execsw.org@localhost>]

On 2018/10/24 23:09, Dima Veselov wrote:
> Greetings,
>
> I have two identical Dell R220 servers running NetBSD 8-STABLE
> and they are working fine, but I noticed permanent high CPU
> usage.
>
> This always look like this:
>
> 75 processes: 71 sleeping, 1 stopped, 3 on CPU
> CPU0 states:  0.0% user,  0.0% nice,  0.7% system, 84.9% interrupt, 14.4% 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,  0.0% system,  0.0% interrupt,  100% idle
> CPU3 states:  0.0% user,  0.0% nice, 62.3% system,  0.0% interrupt, 37.7% idle
> Memory: 3564M Act, 180K Inact, 7288K Wired, 83M Exec, 3020M File, 3272M Free
> Swap: 2048M Total, 2048M Free
>
>    PID USERNAME PRI NICE   SIZE   RES STATE      TIME   WCPU    CPU COMMAND
>      0 root      96    0     0K   23M CPU/3     70.0H 79.15% 79.15% [system]
>
> All other processes take 0% of anything.
> System and interrupt percentage differ from time to time, but
> it always take up to 100% of one core.
>
> I think this is kind of a driver problem, but how can I identify
> which hardware cause that load?
>
> Thanks in advance.

 Could you show me the following output?

	vmstat -e
	intrctl list
	cpuctl list
	dmesg

Thanks in advance.

--
-----------------------------------------------
                SAITOH Masanobu (msaitoh%execsw.org@localhost
                                 msaitoh%netbsd.org@localhost)