Debian 服务器 Systemd-journald 使用高 CPU答案

【问题标题】：Debian server Systemd-journald use high CPUDebian 服务器 Systemd-journald 使用高 CPU
【发布时间】：2020-10-01 08:06:50
【问题描述】：

systemd-journal 的 CPU 使用率似乎很高（60~70%）

# journalctl
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_OUT:IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=120 TOS=0x00 PREC=0x00 TTL=64 ID=25585 DF PROTO=TCP SPT=43
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_IN:IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1 LEN=120 TOS=0x00
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_IN:IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1 LEN=120 TOS=0x00
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_OUT:IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=160 TOS=0x08 PREC=0x00 TTL=64 ID=54980 DF PROTO=TCP SPT=33
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_OUT:IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=160 TOS=0x08 PREC=0x00 TTL=64 ID=54980 DF PROTO=TCP SPT=33
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_IN:IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1 LEN=160 TOS=0x08
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_IN:IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1 LEN=160 TOS=0x08
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_OUT:IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=120 TOS=0x00 PREC=0x00 TTL=64 ID=25586 DF PROTO=TCP SPT=43
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_OUT:IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=120 TOS=0x00 PREC=0x00 TTL=64 ID=25586 DF PROTO=TCP SPT=43
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_IN:IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1 LEN=120 TOS=0x00
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_IN:IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1 LEN=120 TOS=0x00
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_OUT:IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=160 TOS=0x08 PREC=0x00 TTL=64 ID=54981 DF PROTO=TCP SPT=33
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_OUT:IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=160 TOS=0x08 PREC=0x00 TTL=64 ID=54981 DF PROTO=TCP SPT=33
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_IN:IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1 LEN=160 TOS=0x08
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_IN:IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1 LEN=160 TOS=0x08
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_OUT:IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=120 TOS=0x00 PREC=0x00 TTL=64 ID=25587 DF PROTO=TCP SPT=43
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_OUT:IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=120 TOS=0x00 PREC=0x00 TTL=64 ID=25587 DF PROTO=TCP SPT=43
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_IN:IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1 LEN=120 TOS=0x00
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_IN:IN=lo OUT= MAC=00:00:00:00:00:00:00:00:00:00:00:00:08:00 SRC=127.0.0.1 DST=127.0.0.1 LEN=120 TOS=0x00
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_OUT:IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=160 TOS=0x08 PREC=0x00 TTL=64 ID=54982 DF PROTO=TCP SPT=33
Jun 11 17:31:14 hotname.example kernel: BANDWIDTH_OUT:IN= OUT=lo SRC=127.0.0.1 DST=127.0.0.1 LEN=160 TOS=0x08 PREC=0x00 TTL=64 ID=54982 DF PROTO=TCP SPT=33

而且 /var/log/debug ,syslog,bandwidth,kern.log 文件大小增加非常快。

原因是什么？解决办法是什么？

【问题讨论】：

标签： ubuntu debian systemd-journald

【解决方案1】：

这似乎与 Ask Ubuntu 上的 this question 重复。也许你可以在那里找到答案。

【讨论】：