Hi,
I am using:
libbpf-cargo = "0.24.6"
libbpf-rs = "0.24.6"
libbpf-sys = "1.4.3"
On kernel 6.8.0-47-generic.
I contacted the libbpf-rs guys, and they told me this belonged here.
I am attaching 252 uprobes to a system, these symbols are not regularly
called (90ish times over 9 minutes), however, when I specify a pid the
throughput drops 3 times from 12k ops/sec to 4k ops/sec. When I do not
specify a PID, and simply pass -1 the throughput remains the same (as it
should, since 90 times is not significant to affect overhead I would
say). It looks as if we are switching from userspace to kernel space
without triggering the uprobe.
Do not know if this is a known issue, it does not look like an intended
behavior.
