[wellylug] ubuntu load average

Daniel Pittman daniel at rimspace.net
Fri Jan 16 16:56:40 NZDT 2009


Pete Black <pete at marchingcubes.com> writes:

> Well pardon me for relating my experience and trying to help.

I applaud you for that: it is great that you want to.  The problem is
that asserting that IRQ problems cause the fault when, y'know, they
don't, isn't so helpful:

> So this:
> http://forums.whirlpool.net.au/forum-replies-archive.cfm/385948.html

Resolution: identify that kswapd0 is running constantly, causing high
load, upgrade the kernel, problem solved.  No clear link to the reported
RTC timer issues.

> and this:
> https://lists.ubuntu.com/archives/ubuntu-devel/2006-November/022738.html

Why does programming the RTC to < 1000 interrupts per second save power?

> and this:
> http://www.linuxquestions.org/questions/linux-laptop-and-netbook-25/powertop-reporting-a-huge-number-of-acpi-interrupts-597349/

Using ACPI sensors causes the system to wake from sleep significantly
more than when I don't.

> and the bunch of other stuff you get from google when googling 'ubuntu
> rtc interrupt idle load' is obviously irrelevant to this discussion?

Not necessarily.  None of them are about IRQ issues, except possibly the
first link you cite, and even that is unclear.

Regards,
        daniel



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