Based on 4bf04322b8b7ecca4f3d65cfc642d0ac16356129 Mon Sep 17 00:00:00 2001 From: Michael Olbrich Date: Tue, 15 Jul 2014 18:28:10 +0200 Subject: [PATCH] units/serial-getty@.service: use the default RestartSec For pluggable ttys such as USB serial devices, the getty is restarted and exits in a loop until the remove event reaches systemd. Under certain circumstances the restart loop can overload the system in a way that prevents the remove event from reaching systemd for a long time (e.g. at least several minutes on a small embedded system). Use the default RestartSec to prevent the restart loop from overloading the system. Serial gettys are interactive units, so waiting an extra 100ms really doesn't make a difference anyways compared to the time it takes the user to log in. --- units/serial-getty@.service.m4 | 1 - 1 file changed, 1 deletion(-) --- units/serial-getty@.service.m4 +++ units/serial-getty@.service.m4 2014-07-16 00:00:00.000000000 +0000 @@ -27,7 +27,6 @@ ExecStart=-/sbin/agetty --keep-baud %I 1 ExecStopPost=-/sbin/vhangup /dev/%I Type=idle Restart=always -RestartSec=0 UtmpIdentifier=%I TTYPath=/dev/%I TTYReset=yes