Date: Mon, 19 Apr 2004 12:03:46 -0700 (PDT) From: Nate Lawson <nate@root.org> To: Peter Schultz <pmes@bis.midco.net> Cc: freebsd-acpi@freebsd.org Subject: Re: OS Interrupted Message-ID: <20040419120026.L22535@root.org> In-Reply-To: <408421AA.7040905@bis.midco.net> References: <4083FC0D.1060505@bis.midco.net> <20040419105533.T22015@root.org> <408421AA.7040905@bis.midco.net>
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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. -Nate
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