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biosnoop Lost samples #966

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@libbkmz

Description

Hello, I need to capture all IO events. I've tried biosnoop and it's working fine! But sometimes I'm getting this error:

2.004204001    kworker/0:3    26040  xvdb    W  41950344  65536      0.34
Lost 10 samples
2.104204001    kworker/0:3    26040  xvdb    W  31950344  65536      0.28

I've found, that it produced here:
https://github.com/iovisor/bcc/blob/master/src/cc/perf_reader.c#L238

But I can't setup debug evironment for bcc and can't get detailed information about this issue.
How ca I avoid this issue? How can I increase ring-buffer for perf events?

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