[screen-devel] timing issue with "-X stuff" command

[Hans Henrik Bergan]

seems like there may be a timing issue with the -X stuff command,

i had a script doing

screen -S foo -dm
screen -S foo -X stuff "/path/to/script.sh^M"

and when the system is very busy, sometimes, the 2nd command seems to
be completely ignored, there's no indication that anything was
written/executed in the screen session,
but adding a "sleep 1" in between seems to resolve the issue, which
isn't a great solution, but a hacky workaround.. observed on:

> screen --version
Screen version 4.03.01 (GNU) 28-Jun-15
> uname -a
Linux miner1 4.4.0-127-generic #153-Ubuntu SMP Sat May 19 10:58:46 UTC
2018 x86_64 x86_64 x86_64 GNU/Linux
> cat /etc/*release*
DISTRIB_ID=Ubuntu
DISTRIB_RELEASE=16.04
DISTRIB_CODENAME=xenial
DISTRIB_DESCRIPTION="Ubuntu 16.04.4 LTS"
NAME="Ubuntu"
VERSION="16.04.4 LTS (Xenial Xerus)"
ID=ubuntu
ID_LIKE=debian
PRETTY_NAME="Ubuntu 16.04.4 LTS"
VERSION_ID="16.04"
HOME_URL="http://www.ubuntu.com/";
SUPPORT_URL="http://help.ubuntu.com/";
BUG_REPORT_URL="http://bugs.launchpad.net/ubuntu/";
VERSION_CODENAME=xenial
UBUNTU_CODENAME=xenial


and the CPU is Intel Core i3-7300T, with hyperthreading disabled, and
core speed locked to 800MHz