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Raw events and the perf ABI

Raw events and the perf ABI

Posted May 5, 2011 20:19 UTC (Thu) by ejr (subscriber, #51652)
In reply to: Raw events and the perf ABI by deater
Parent article: Raw events and the perf ABI

Exactly. It's about a month turn-around between possible kernel-level fixes on the relevant small-ish machine here. Other places (e.g. NERSC & ORNL), well, forget it. Rebooting a 19k node machine isn't taken lightly. Not supporting raw access to the different levels makes using performance counters *more* difficult, not less. And calling out-of-tree userspace interfaces non-existent is dishonest.


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