Re: High system times on Scaleway Cloud server

[Jason Thorpe <thorpej%me.com@localhost>]

> On Dec 25, 2018, at 10:02 AM, Jason Thorpe <thorpej%me.com@localhost> wrote:
> 
> 
>> On Dec 25, 2018, at 9:42 AM, Alexander Nasonov <alnsn%yandex.ru@localhost> wrote:
>> 
>> File: tprof.out
>> Number of samples: 220
>> 
>> percentage   nsamples pid    lwp  cpu  k address          symbol
>> ------------ -------- ------ ---- ---- - ---------------- ------
>> 27.727274%       61      0    0    0 1 ffffffc0000040a4 splx+0xbc
>> 12.727272%       28      0    0    0 1 ffffffc0003c7424 mutex_enter+0x124
> 
> I’m going to guess that there’s a spin mutex that’s contended.

You should be able to use lockstat(1) to narrow down which one.

-- thorpej