05-02-2016, 10:45 AM
I have now updated to the newest available debian (Debian Linux with Mate GUI Image [20160501] by lenny.raposo), which behaves just the same.
The pain64 (512MB) is still unresponsive, while the PINE64+ is ok.
I have now STRACEd the xinetd-echo process on the PINE, while I run my echo script against. (strace -r -e trace=network -p PID-OF-XINETD -ff -o ./strace.log)
I have written some scripts, which have searched for TCP-retries in tcpdump, extracted those sessions, and matched them against the corresponding strace-file, which could be identified by the port number.
It looks like, that all sessions with retries are not longer than 1 sec delayed. The sessions running running longer have no retries.
The pain64 (512MB) is still unresponsive, while the PINE64+ is ok.
I have now STRACEd the xinetd-echo process on the PINE, while I run my echo script against. (strace -r -e trace=network -p PID-OF-XINETD -ff -o ./strace.log)
I have written some scripts, which have searched for TCP-retries in tcpdump, extracted those sessions, and matched them against the corresponding strace-file, which could be identified by the port number.
It looks like, that all sessions with retries are not longer than 1 sec delayed. The sessions running running longer have no retries.