Re: [PATCH] i386: Fix softirq accounting with 4K stacks

From: Mike Galbraith
Date: Sun Jun 25 2006 - 23:04:53 EST


On Mon, 2006-06-26 at 04:23 +0200, Mike Galbraith wrote:

> Something is certainly still b0rken. I still get three different
> answers to the question "what is my cpu usage" depending on
> configuration. With stock UP kernel with no IO-APIC, interrupt load is
> all hi. With your patch and IO-APIC, it's all si. SMP shows a mix of
> both.

I didn't say that quite right.

The third case for my box is XT-PIC and your patch. Previously, top
showed the 10% interrupt load of a flood ping as all hi. Now it's both
hi and si when using XT-PIC, but it's no longer the 10% that agreed with
the profile, it's 10% hi, but with an added ~7% si.

-Mike

-
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/