Re: [patch] sched: auto-tune migration costs

[Paul Jackson <pj@engr.sgi.com>]

Andi wrote:
> There is already an arch neutral mechanism in sysfs, see
> /sys/devices/system/node/node*/distance

Excellent - thank-you.

> But of course SLIT doesn't know anything about cache latencies.

Of course.  Though SLIT does know about basic node distances, which
tend to correlate with cache migration costs, apparently closely enough
for our current modest needs.

-- 
                  I won't rest till it's the best ...
                  Programmer, Linux Scalability
                  Paul Jackson <pj@engr.sgi.com> 1.650.933.1373, 1.925.600.0401
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