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RPi | Re-implement "initial_turbo" #3147

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MichaIng opened this issue Oct 8, 2019 · 2 comments
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RPi | Re-implement "initial_turbo" #3147

MichaIng opened this issue Oct 8, 2019 · 2 comments
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Enhancement 💨 Raspberry Pi Solution available 🥂 Definite solution has been done
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v6.26

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@MichaIng
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MichaIng commented Oct 8, 2019

Bug has been fixed with recent testing firmware. We'll re-implement this useful feature most likely with v6.27 when this firmware update has been released: raspberrypi/firmware#1005
@MichaIng MichaIng added this to the v6.27 milestone Oct 8, 2019
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Nice, kernel release is already there. I made an initial reboot to check boot time with new firmware:

2019-10-10 18:14:49 root@micha:~# systemd-analyze
Startup finished in 3.498s (kernel) + 32.207s (userspace) = 35.705s
graphical.target reached after 32.107s in userspace

After setting initial_turbo=20:

2019-10-10 18:28:09 root@micha:~# systemd-analyze
Startup finished in 1.334s (kernel) + 10.063s (userspace) = 11.398s
graphical.target reached after 9.964s in userspace

Massive difference since RPi boots with powersave governor until it is set by own scripts, dietpi-set_cpu from within dietpi-preboot in our case.

@MichaIng MichaIng modified the milestones: v6.27, v6.26 Oct 10, 2019
MichaIng added a commit that referenced this issue Oct 10, 2019
@MichaIng
v6.26
6d64947 
+ RPi | config.txt: Re-add initial_turbo to default config, since the ondemand governor bug has been fixed with last kernel update: #3147
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MichaIng commented Oct 10, 2019 •
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Re-added: 1082b18
Offer to add it on update: 0aa36e5

@MichaIng MichaIng added the Solution available 🥂 Definite solution has been done label Oct 10, 2019
This was referenced Oct 10, 2019
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