hi, Debugging a ptp4l issue, observed its getting blocked while writing into /var/log/messages file. Blocking of ptp4l can vary from few minutes to forever. Blocking could be related to system buffer or sockets issue or remote peer is busy.
But ptp4l blocked for writing messages and not updating system time is the issue. Using ptp4l 2.0, is this kind of issue is addressed or fixed in later release? Below is the stack and strace. root@k8s-worker-0:/var/log# cat /proc/699/stack [<ffffffff81700f98>] unix_wait_for_peer+0xe8/0x100 [<ffffffff81705252>] unix_dgram_sendmsg+0x6a2/0x750 [<ffffffff8161e3d6>] sock_sendmsg+0xb6/0xf0 [<ffffffff8161eb01>] SYSC_sendto+0x121/0x1c0 [<ffffffff8162061e>] SyS_sendto+0xe/0x10 [<ffffffff81781434>] tracesys+0xa6/0xcc [<ffffffffffffffff>] 0xffffffffffffffff /var/log# strace -s 99 -ffp 699 strace: Process 699 attached sendto(4, "<14>Aug 8 19:33:50 ptp4l: [36867.984] rms 3 max 6 freq -1408 +/- 5 delay 436 +/- "..., 102, MSG_NOSIGNAL, NULL, 0 ^Cstrace: Process 699 detached Please suggest. regards, Ramesh _______________________________________________ Linuxptp-users mailing list Linuxptp-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linuxptp-users
