patch: enable MEM_LOAD_UOPS_LLC_HIT_RETIRED on sandy bridge xeon

[hiren panchasara]

On Fri, Aug 16, 2013 at 1:35 PM, Adrian Chadd <adrian at freebsd.org> wrote:

> Attempt #2:
>
> http://people.freebsd.org/~adrian/netflix/20130816-hwpmc-sbx-1.diff
>

Looks good. You should update the manpage for sbx too and add new counters.

>
> I've verified that I get counter events from this! But I need to load up a
> system more to trigger contention to validate that they're doing the right
> thing.
>
> Unfortunately there's an erratum on this which we need to add in the hack
> for:
>
>
> http://software.intel.com/en-us/articles/performance-monitoring-on-intel-xeon-processor-e5-family
>
> .. sigh.
>
sigh indeed.

Adding the PR you reported just for the reference:
http://www.freebsd.org/cgi/query-pr.cgi?pr=181346&cat=

Cheers,
Hiren