Re: [perfmon] Re: [perfmon2] perfmon2 merge news

[Paul Mackerras <paulus@samba.org>]

dean gaudet writes:

> actually multiplexing is the main feature i am in need of. there are an 
> insufficient number of counters (even on k8 with 4 counters) to do 
> complete stall accounting or to get a general overview of L1d/L1i/L2 cache 
> hit rates, average miss latency, time spent in various stalls, and the 
> memory system utilization (or HT bus utilization).  this runs out to 
> something like 30 events which are interesting... and re-running a 
> benchmark over and over just to get around the lack of multiplexing is a 
> royal pain in the ass.

So by "multiplexing" do you mean the ability to have multiple event
sets associated with a context and have the kernel switch between them
automatically?

Paul.
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