[Wed Jan 21 11:03:40 UTC 2026] respawn: 0: starting: /data/bpftrace/udp_sendmsg_delay.sh
+ pidof osmo-bts-trx
+ bpftrace /data/bpftrace/udp_sendmsg_delay.bt -v -p 9 osmo-bts-trx
Attaching 'begin' probe
Trying to attach probe: kretprobe:udp_sendmsg
Trying to attach probe: kprobe:udp_sendmsg
Attached 3 probes
Tracing udp_sendmsg() latency... Hit Ctrl-C to end.
lsof output:
COMMAND   PID USER  FD   TYPE FILE-FLAG DEVICE SIZE/OFF     NODE NAME
udp_sendm  27 root cwd    DIR              9,3     4096 13773872 /data
udp_sendm  27 root rtd    DIR            0,118     4096 19026520 /
udp_sendm  27 root txt    REG            0,118   129736  7647243 /usr/bin/dash
udp_sendm  27 root mem    REG              9,3           7647243 /usr/bin/dash (path dev=0,118)
udp_sendm  27 root mem    REG              9,3           7647837 /usr/lib/x86_64-linux-gnu/libc.so.6 (path dev=0,118)
udp_sendm  27 root mem    REG              9,3           7647817 /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2 (path dev=0,118)
udp_sendm  27 root   0r   CHR        LG    1,3      0t0       15 /dev/null
udp_sendm  27 root   1w  FIFO         W   0,13      0t0 21463386 pipe
udp_sendm  27 root   2w  FIFO         W   0,13      0t0 21463387 pipe
udp_sendm  27 root  10r   REG     LG,CX    9,3      100 13773939 /data/bpftrace/udp_sendmsg_delay.sh
maps output:
55aff318e000-55aff3192000 r--p 00000000 09:03 7647243                    /usr/bin/dash
55aff3192000-55aff31a6000 r-xp 00004000 09:03 7647243                    /usr/bin/dash
55aff31a6000-55aff31ac000 r--p 00018000 09:03 7647243                    /usr/bin/dash
55aff31ac000-55aff31ae000 r--p 0001d000 09:03 7647243                    /usr/bin/dash
55aff31ae000-55aff31af000 rw-p 0001f000 09:03 7647243                    /usr/bin/dash
55aff31af000-55aff31b1000 rw-p 00000000 00:00 0 
55b006a5a000-55b006a7b000 rw-p 00000000 00:00 0                          [heap]
7f0fce617000-7f0fce61a000 rw-p 00000000 00:00 0 
7f0fce61a000-7f0fce642000 r--p 00000000 09:03 7647837                    /usr/lib/x86_64-linux-gnu/libc.so.6
7f0fce642000-7f0fce7a6000 r-xp 00028000 09:03 7647837                    /usr/lib/x86_64-linux-gnu/libc.so.6
7f0fce7a6000-7f0fce7fc000 r--p 0018c000 09:03 7647837                    /usr/lib/x86_64-linux-gnu/libc.so.6
7f0fce7fc000-7f0fce800000 r--p 001e1000 09:03 7647837                    /usr/lib/x86_64-linux-gnu/libc.so.6
7f0fce800000-7f0fce802000 rw-p 001e5000 09:03 7647837                    /usr/lib/x86_64-linux-gnu/libc.so.6
7f0fce802000-7f0fce80f000 rw-p 00000000 00:00 0 
7f0fce81d000-7f0fce81f000 rw-p 00000000 00:00 0 
7f0fce81f000-7f0fce820000 r--p 00000000 09:03 7647817                    /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7f0fce820000-7f0fce848000 r-xp 00001000 09:03 7647817                    /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7f0fce848000-7f0fce853000 r--p 00029000 09:03 7647817                    /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7f0fce853000-7f0fce855000 r--p 00034000 09:03 7647817                    /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7f0fce855000-7f0fce856000 rw-p 00036000 09:03 7647817                    /usr/lib/x86_64-linux-gnu/ld-linux-x86-64.so.2
7f0fce856000-7f0fce857000 rw-p 00000000 00:00 0 
7ffd06bf6000-7ffd06c17000 rw-p 00000000 00:00 0                          [stack]
7ffd06cd1000-7ffd06cd5000 r--p 00000000 00:00 0                          [vvar]
7ffd06cd5000-7ffd06cd7000 r-xp 00000000 00:00 0                          [vdso]