Re: [PATCH] NUMA-Q disable irqbalance

[Linus Torvalds]

On Tue, 13 Aug 2002, Rik van Riel wrote:
> 
> As a clarification to this, I'm not suggesting that interactive
> performance doesn't exist, I'm suggesting that we should measure
> it.

I think the only way to measure it is with a latency measurement thing - 
like the one used for some of the RT tuning.

However, the latency measurement should not care too much about individual
millisecond latencies, but only holler when it finds _combined_ bad
latencies in the 1/10+ second range (which is human-perceptible).

One problem is trying to find a good load for the tester program itself
(it should not just sit in a tight loop, it should have a memory footprint
and some delays of its own).

		Linus