[lttng-dev] LTTng and containers.

2022-10-11 Thread Maksim Khmelevskiy via lttng-dev
Hi, I would like to ask regarding the hot topic - container tracing. I've seen a youtube video , have read a message from LTTng mailing list and tried to google more about this topic but

[lttng-dev] lttng-ust on arm64 getting bogged down by the getcpu syscall (taking more than 600ns per call)

2022-10-11 Thread Akhil Veeraghanta via lttng-dev
Hello! I've run into an issue with getcpu not having a vsdo implementation and taking anywhere from 600ns to 80us (avg 1 us) when using lttng-ust tracepoints. I am on lttng v2.13 and kernel version 4.9.253-l4t, running on a jetson (arm64). I was digging around and found that rseq might be the re