5.4-prerelease - hanging under load

Nate Lawson nate at root.org
Wed Apr 6 11:37:40 PDT 2005

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.


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