膽怯地運行並佔用我的 CPU 的一個核心

2024-6-10 • tag-icon

現在，當我從睡眠狀態啟動電腦時，膽怯已經兩次（間隔一段時間，我想是幾週）不知從何而來。它佔用了我的一個核心的所有處理能力，並且已經運行了大約 5 到 10 分鐘，我想知道為什麼這個進程會啟動。

運行將pstree進程顯示為的直接後代，systemd所以我猜systemd是負責啟動的timidity，但我不知道如何找到啟動的配置timidity。

如果我運行strace該進程，我會得到以下資訊：

ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0
poll([{fd=6, events=POLLIN}], 1, 0)     = 0 (Timeout)
ioctl(6, SNDRV_SEQ_IOCTL_GET_QUEUE_STATUS, 0x16c83e0) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x7fff43107780) = 0
ioctl(4, SNDRV_PCM_IOCTL_HWSYNC, 0x3cd407d5) = 0

該進程開啟的檔案是：

/dev/null
/dev/snd/timer
/dev/snd/pcmC0D0p
/dev/snd/controlC0
/dev/snd/seq

運行的命令列是：

/usr/bin/timidity-Os-iAD

最後 3 則資訊取自/proc/$PID/.

所以我問，我怎麼能找出為什麼timidity正在運行（我稍後會解決為什麼它佔用了所有一個核心的問題）。

答案1

 cat /run/systemd/generator.late/timidity.service
# Automatically generated by systemd-sysv-generator

[Unit]
SourcePath=/etc/init.d/timidity
Description=LSB: start and stop timidity
Before=runlevel2.target runlevel3.target runlevel4.target runlevel5.target shutdown.target
After=remote-fs.target
Conflicts=shutdown.target

[Service]
Type=forking
Restart=no
TimeoutSec=5min
IgnoreSIGPIPE=no
KillMode=process
GuessMainPID=no
RemainAfterExit=yes
SysVStartPriority=1
ExecStart=/etc/init.d/timidity start
ExecStop=/etc/init.d/timidity stop

systemd-unit 是由 systemd 動態產生的。為了防止啟動，您可以使用或刪除我想要的chkconfig鏈接/etc/rc2.d/S01timiditychkconfig --del timidity

答案1

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