nate at root.org
Mon Apr 19 12:03:45 PDT 2004
On Mon, 19 Apr 2004, Peter Schultz wrote:
> Nate Lawson wrote:
> > On Mon, 19 Apr 2004, Peter Schultz wrote:
> >>ACPI is working again on my machine but there's a terrible amount of
> >>latency introduced when using it. The mouse cursor is really jerky and
> >>realaudio streams will constantly skip where they never do otherwise.
> >>Are there ACPI tweaks I can try to see if this can be eliminated?
> > set hw.acpi.force_sci_lo=1 at the loader prompt.
> This isn't interrupt storm bad, but it makes listening to
> music very annoying and the mouse cursor really jumpy.
So you're saying vmstat -i doesn't show anything out of the ordinary? How
often does the jumpiness happen? If it's once every 30 seconds, it could
be thermal polling. If it's constantly, it's like a GPE issue or
interrupt storm. You could stick a printf in acpi_ec.c:EcGpeQueryHandler
to see if you're getting a lot of GPEs. If that's the case, it will
likely be solved on the next import. You can work around this by removing
the line in acpi.c that sets Gbl*Gpe* to FALSE.
More information about the freebsd-acpi