Messages in this thread | | | Date | Mon, 21 Mar 2022 19:40:33 +0200 | Subject | Re: [PATCH] perf intel-pt: Synthesize cycle events | From | Adrian Hunter <> |
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On 21/03/2022 18:58, Steinar H. Gunderson wrote: > On Mon, Mar 21, 2022 at 03:09:08PM +0200, Adrian Hunter wrote: >> Yes, it can cross calls and returns. 'returns' due to "Return Compression" >> which can be switched off at record time with config term noretcomp, but >> that may cause more overflows / trace data loss. >> >> To get accurate times for a single function there is Intel PT >> address filtering. >> >> Otherwise LBRs can have cycle times. > > Many interesting points, I'll be sure to look into them. > > Meanwhile, should I send a new patch with your latest changes?
Yes please.
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