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SubjectRe: [PATCH 01/14] x86/cqm: Intel Resource Monitoring Documentation

On Fri, 23 Dec 2016, Peter Zijlstra wrote:
> Also, the 'whoops you ran out of RMIDs, please reboot' thing totally and
> completely blows.

Well, this is really a hardware limitation. User cannot monitor more events on a
package than # of RMIDs at the *same time*. The 10/14 reuses the RMIDs that are
not monitored anymore. User can monitor more events once he stops monitoring

So we throw error at the read (LAZY mode) or open(NOLAZY mode) ..


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