[iovisor-dev] minutes: IO Visor TSC and Dev Members Call

2016-08-10 Thread Brenden Blanco via iovisor-dev
Thank you all for joining today. Please find my notes from the meeting below. === Works in progress === Tracing: * add hw cache events reading support in PERF_EVENT_ARRAY (brenden) * working on nmi support for bpf tracing (alexei) - to attach programs when counters are firing (overflow wakeup_xx

Re: [iovisor-dev] read perf counters

2016-08-10 Thread riya khanna via iovisor-dev
How do I do that at runtime conditionally (e.g. upon execution of a particular kernel/user code)? May be this example will help present my case: I'm trying to monitor different sets of events (e.g. set1 consists of cpu cycles, cache misses, and cache refs and set 2 consists of instruction count,

Re: [iovisor-dev] read perf counters

2016-08-10 Thread Brenden Blanco via iovisor-dev
On Tue, Aug 9, 2016 at 9:59 AM, riya khanna wrote: > On Tue, Aug 9, 2016 at 12:24 PM, Brenden Blanco > wrote: > > > > > > On Tue, Aug 9, 2016 at 9:16 AM, riya khanna > > wrote: > >> > >> On Tue, Aug 9, 2016 at 12:05 PM, Brenden Blanco > >> wrote: > >> > On Tue, Aug 9, 2016 at 8:54 AM, riya kha