5.4-prerelease - hanging under load

[Nate Lawson]

Pierre-Luc Drouin wrote:
> Matthias Buelow wrote:
> 
>> Nate Lawson <nate at root.org> writes:
>>
>>  
>>
>>> sysctl dev.cpu and look at the current frequency setting.  If low, 
>>> then your system is affected and will be fixed soon when I mfc.  If 
>>> not, perhaps you have an interrupt storm (vmstat -i)
>>>   
>>
>>
>> Just for the record. I ran vmstat -i in a loop while untarring the
>> thunderbird source (causing degraded interactive responsiveness, as
>> reported in an earlier mail), and couldn't see any noticable increase in
>> interrupt rate.
>>
>> mkb.
>>
>>  
>>
> I've noticed that the idle process is using sometimes as much as 60% of 
> my CPU. Could it be a relation between that and the lag we have with 5.4?

That is different.  sysctl hw.acpi.cpu.cx_lowest="C1" to see if that 
works around it.

-- 
Nate