Hi Simon,


Thank you for your message! Unfortunately, I missed your previous message, sorry for this.


I processed the CI's trace logs, I got the following performance: bt2 (140.51s) vs bt1 (122.00s). In my opinion, the values are quite similar comparing with my other measurements.


Best regards,

Aleksandr


On 2020-03-13 4:58 p.m., Simon Marchi wrote:
> Hi Aleksander,
>
> I just noticed you did not send your original email to the lttng-dev mailing list,
> please send such request on that mailing list, as it's of public interest:
>
>   https://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
>
> See my previous response here:
>
>   https://pastebin.com/raw/3Q5PbYXn
>
> Simon
>

Hi Aleksander,

Sorry, I forgot to follow up.  Did you get my last message?

This is the trace we use for benchmarking: https://files.efficios.com/s/pog5raGkBkH63y9

Could you try to compare bt1 and bt2 using that trace?

On the CI benchmark system, we get some similar performance with both bt1 and bt2.  Although
a colleague tried on a recent AMD Ryzen 3700X CPU, and he says bt2 is slower than bt1 for
him (36s vs 33s).  I'd be curious to know what kind of numbers you get.

Simon