Public bug reported:
The size of the kernel snap for UC20 is 254Mbytes (compressed) and
794Mbytes (uncompressed).
569Mbyte of this is caused by FW
40Mbyte -> amdgpu
IMO, removing unreferenced FW and/or reducing number of drivers & their
FW has exponential reduction of disk space usage.
Additionally, downloaded image will be smaller; and storing 3x kernel
snaps for upgrades will be smaller.
Even more, snap seeding will be faster, so boot time will be faster.
So it will be a nice gain in multiple aspects: download image, boot
image, upgrade image, reboot image, start using image.
stulluk ~/tmp $ ls -lah pi-kernel_353.snap
-rw------- 1 stulluk stulluk 254M Kas 8 13:57 pi-kernel_353.snap
stulluk ~/tmp $ cd pikern/
stulluk ~/tmp/pikern $ du -sh
794M .
stulluk ~/tmp/pikern $ cd firmware/
stulluk ~/tmp/pikern/firmware $ du --block-size=MiB --max-depth=1 . | sort -rn
569MiB .
140MiB ./netronome
40MiB ./amdgpu
34MiB ./intel
25MiB ./liquidio
24MiB ./qcom
20MiB ./qed
19MiB ./brcm
12MiB ./mellanox
12MiB ./dpaa2
12MiB ./ath10k
...
** Affects: linux-raspi (Ubuntu)
Importance: Undecided
Status: New
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Packages, which is subscribed to linux-raspi in Ubuntu.
https://bugs.launchpad.net/bugs/1951423
Title:
Ucore kernel snap size: amd gpu fw
Status in linux-raspi package in Ubuntu:
New
Bug description:
The size of the kernel snap for UC20 is 254Mbytes (compressed) and
794Mbytes (uncompressed).
569Mbyte of this is caused by FW
40Mbyte -> amdgpu
IMO, removing unreferenced FW and/or reducing number of drivers &
their FW has exponential reduction of disk space usage.
Additionally, downloaded image will be smaller; and storing 3x kernel
snaps for upgrades will be smaller.
Even more, snap seeding will be faster, so boot time will be faster.
So it will be a nice gain in multiple aspects: download image, boot
image, upgrade image, reboot image, start using image.
stulluk ~/tmp $ ls -lah pi-kernel_353.snap
-rw------- 1 stulluk stulluk 254M Kas 8 13:57 pi-kernel_353.snap
stulluk ~/tmp $ cd pikern/
stulluk ~/tmp/pikern $ du -sh
794M .
stulluk ~/tmp/pikern $ cd firmware/
stulluk ~/tmp/pikern/firmware $ du --block-size=MiB --max-depth=1 . | sort
-rn
569MiB .
140MiB ./netronome
40MiB ./amdgpu
34MiB ./intel
25MiB ./liquidio
24MiB ./qcom
20MiB ./qed
19MiB ./brcm
12MiB ./mellanox
12MiB ./dpaa2
12MiB ./ath10k
...
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