2022-02-01 20:34:39 +00:00
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---
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keywords:
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- IT
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---
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2022-01-17 07:33:46 +00:00
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# systemd cheat sheet
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2022-01-10 06:31:31 +00:00
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## systemd- bootdelay analyzing
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2022-01-17 07:33:46 +00:00
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- Short summarize over boot duration
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`system-analyze`
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- Generate plot for systemd boot process
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2022-01-17 08:22:46 +00:00
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`system-analyze plot > boot.svg`
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2022-01-17 07:33:46 +00:00
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`firefox boot.svg`
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- kernel log with delta in time
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`dmesg --show-delta --color=always | less -R`
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2022-01-17 08:22:46 +00:00
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- correlate initramfs with kernel messages
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2022-01-17 07:33:46 +00:00
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`journalctl -b -o short-monotonic`
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- sort systemd load times
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`systemd-analyze blame`
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2022-01-17 08:22:46 +00:00
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- select specific initramfs service
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2022-01-17 07:33:46 +00:00
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`journalctl -b -o short-monotonic -u systemd-udev-settle.service`
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- analyse with systemd-bootchart
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`init=/lib/systemd/systemd-bootchart`
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- the chart file is located under `/run/log/bootchart`
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2022-01-10 06:31:31 +00:00
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2022-03-22 13:49:51 +00:00
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## check offline journald log
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`journalctl --root=/run/media/user/partitionname/`
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journalctl needs the actual root of the root partition and not the journal folder.
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