Re: Interrupt storm

[Dima Veselov <kab00m%lich.phys.spbu.ru@localhost>]

On Wed, Oct 24, 2018 at 06:01:53PM +0000, Christos Zoulas wrote:
> >> 
> >> I have two identical Dell R220 servers running NetBSD 8-STABLE
> >> and they are working fine, but I noticed permanent high CPU
> >> usage.
> >> 
> >> I think this is kind of a driver problem, but how can I identify
> >> which hardware cause that load?
> 
> If you switch to the "threads" display by typing "t" you'll see the thread
> that is using all the cpu. My guess is it is "ioflush".

No, it is sysmon. Everything down those 3 take 0%.

    0    15 root      96 RUN/3     86.5H 73.00% 73.00% sysmon    [system]
    0    88 root     221 raidio/2   1:01  2.64%  2.64% raidio3   [system]
 6799     7 named     85 kqueue/0   4:50  1.12%  1.12% -         named

-- 
Sincerely yours,
Dima Veselov
Physics R&D Establishment of Saint-Petersburg University