[lttng-dev] Profiling LTTng tracepoint latency on different arm platforms

[Mathieu Desnoyers]

On 6/20/23 06:27, Mousa, Anas via lttng-dev wrote:
> Hello,

> 
> Arethereanysuggestionstorootcausethehighlatencyandpotentiallyimproveiton*platform****1*?
> 
> Thanks and best regards,
> 
> Anas.
> 

I recommend using "perf" when tracing with the sample program in a loop 
to figure out the hot spots. With that information on the "fast" and 
"slow" system, we might be able to figure out what differs.

Also, comparing the kernel configurations of the two systems can help. 
Also comparing the glibc versions of the two systems would be relevant.

Thanks,

Mathieu


-- 
Mathieu Desnoyers
EfficiOS Inc.
https://www.efficios.com