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bpf: print link stats on SIGUSR2 #68

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bpf: print link stats on SIGUSR2 #68

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@mmat11 mmat11 commented Nov 4, 2025

sample output:

time=2025-11-04T16:10:29.200+01:00 level=INFO msg="printing eBPF link stats upon receiving SIGUSR2" component=ebpf.ProcessTracer type=1 num_links=26
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44661 program_id=45075 program_name=obi_kprobe_sock kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44662 program_id=45087 program_name=obi_kretprobe_s kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44663 program_id=45089 program_name=obi_kretprobe_s kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44664 program_id=45072 program_name=obi_kprobe_inet kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44665 program_id=45080 program_name=obi_kprobe_tcp_ kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44666 program_id=45079 program_name=obi_kprobe_tcp_ kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44667 program_id=45082 program_name=obi_kprobe_tcp_ kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44668 program_id=45091 program_name=obi_kretprobe_t kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44669 program_id=45089 program_name=obi_kretprobe_s kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44670 program_id=45077 program_name=obi_kprobe_sys_ kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44671 program_id=45085 program_name=obi_kprobe_unix kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44672 program_id=45093 program_name=obi_kretprobe_u kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44673 program_id=45081 program_name=obi_kprobe_tcp_ kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.201+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44674 program_id=45088 program_name=obi_kretprobe_s kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.202+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44675 program_id=45083 program_name=obi_kprobe_tcp_ kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.202+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44676 program_id=45092 program_name=obi_kretprobe_t kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.202+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44677 program_id=45086 program_name=obi_kprobe_unix kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.202+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44678 program_id=45094 program_name=obi_kretprobe_u kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.202+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44679 program_id=45084 program_name=obi_kprobe_udp_ kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.202+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44680 program_id=45074 program_name=obi_kprobe_sock kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.202+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44681 program_id=45078 program_name=obi_kprobe_tcp_ kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.202+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44682 program_id=45081 program_name=obi_kprobe_tcp_ kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.202+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44683 program_id=45088 program_name=obi_kretprobe_s kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.202+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44684 program_id=45073 program_name=obi_kprobe_secu kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.202+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44685 program_id=45076 program_name=obi_kprobe_sys_ kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0
time=2025-11-04T16:10:29.202+01:00 level=INFO msg="eBPF link stats" component=ebpf.ProcessTracer type=1 link_id=44686 program_id=45090 program_name=obi_kretprobe_s kprobe_missed_count=0 total_runtime=0s run_count=0 recursion_misses=0

@mmat11
bpf: print link stats on SIGUSR2
84483c3 
Signed-off-by: Mattia Meleleo <[email protected]>
@mmat11 mmat11 marked this pull request as draft November 5, 2025 16:27
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