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runit-startuptime: new script #124

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classabbyamp
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@classabbyamp classabbyamp commented Sep 4, 2024 •
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just a silly little script to "analyze" boot time

example output:

# runit-startuptime
initramfs       0.646 s
core-services   4.002 s
  00-pseudofs           0.056 s
  01-static-devnodes    1.178 s
  02-kmods              0.027 s
  02-udev               2.413 s
  03-console-setup      0.096 s
  03-filesystems        0.202 s
  04-swap               0.004 s
  05-misc               0.015 s
  08-sysctl             0.008 s
  20-screen             0.001 s
  98-sbin-merge         0.000 s
  99-cleanup            0.001 s
rc.local        0.002 s
total           7.952 s

@0x5c
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0x5c commented Sep 4, 2024

The name comes from systemd-analyze, but I think that naming is a little bit obtuse in the first place.
What about a more descriptive name like runit-startuptime or similar?

@classabbyamp classabbyamp changed the title runit-analyze: new script runit-startuptime: new script Sep 4, 2024
@Vaelatern
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Do you mind if we merge #122 first?

@classabbyamp
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please do

@classabbyamp
1, 2, functions: instrument the boot process
7f44b79 
we can save boot timing information with good accuracy to the kernel
message log, then retrieve it later with a script.
Vaelatern
Vaelatern reviewed Sep 6, 2024
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@duskmoss
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duskmoss commented Sep 6, 2024

this is fun :)

AnInternetTroll
AnInternetTroll reviewed Sep 6, 2024
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@AnInternetTroll
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Tested on x86_64 and it works :D

@classabbyamp
runit-startuptime: new script
7755516 
parse the timing info from dmesg to give uses a rough accounting of time
spent during boot. this may fail to be accurate if run a long time from boot
(i.e. if the messages have left the kernel message ring buffer)
@Anachron
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Can this not be merged? :-)

@classabbyamp
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no, i need to fix something still

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@Vaelatern Vaelatern Vaelatern approved these changes

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6 participants
@classabbyamp @0x5c @Vaelatern @duskmoss @AnInternetTroll @Anachron