Configuration Information:
Machine: x86_64
OS: linux-gnu
Compiler: gcc
Compilation CFLAGS: -g -O2 -Wno-parentheses -Wno-format-security
uname output: Linux medium 4.19.0-8-amd64 #1 SMP Debian 4.19.98-1 (2020-01-26)
x86_64 GNU/Linux
Machine Type: x86_64-pc-linux-gnu
Bash Version: 5.0
Patch Level: 16
Release Status: release
Description:
Integer part of $EPOCHREALTIME could increase more than 8000
microseconds
before $EPOCHSECONDS
Repeat-By:
epochVariableDiff () {
local errcnt=0 lasterrcnt v1 v2 v3 us vals line
while ((errcnt==0)) || ((errcnt>lasterrcnt)); do
lasterrcnt=$errcnt
printf -v vals '%(%s)T %s %s' -1 $EPOCHSECONDS $EPOCHREALTIME
IFS=$' .' read v1 v2 v3 us <<<"$vals"
[ "$v1" = "$v2" ] && [ "$v2" = "$v3" ] || ((errcnt++))
[ $errcnt -eq 1 ] && echo "$line"
printf -v line '%3d %s - %s - %s . %s' $errcnt $v1 $v2 $v3 $us
printf "%s\r" "$line"
((errcnt)) && echo "$line"
read -t ${1:-.0002}
done
epochVariableDiff
0 1586853481 - 1586853481 - 1586853481 . 999940
1 1586853481 - 1586853481 - 1586853482 . 000320
2 1586853481 - 1586853481 - 1586853482 . 000691
3 1586853481 - 1586853481 - 1586853482 . 001059
4 1586853481 - 1586853481 - 1586853482 . 001429
5 1586853481 - 1586853481 - 1586853482 . 001854
6 1586853481 - 1586853481 - 1586853482 . 002220
7 1586853481 - 1586853481 - 1586853482 . 002672
8 1586853481 - 1586853481 - 1586853482 . 003113
9 1586853481 - 1586853481 - 1586853482 . 003530
9 1586853482 - 1586853482 - 1586853482 . 003889
(My raspberry-pi seem not to be affected)
Was discovered and published at
https://stackoverflow.com/a/58557346/1765658
