how to reduce:
1. Stop clock synchronization
systemctl stop chrony
2. Set the timezone to Dublin
timedatectl set-timezone Europe/Dublin
3. Change the time to waitting for Daylight saving time switch
timedatectl set-time "2024-03-30 23:59:50"
At 0 o'clock, the system is executing atop
Public bug reported:
Systemd version(249) in Jammy Jellyfish is too old, When using the
Dublin time zone for daylight saving time switching，the CPU usage will
suddenly increase to 100% starting from 2024-03-31 00:00:00 and last for
1 hour, but return to normal at 2024-03-31 02:00:00. plz backport
