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* kernel 5.10.x Reserves much more RAM than 5.11.0, 8 MB vs 20 MB
@ 2021-10-27 12:48 Joakim Tjernlund
  2021-10-27 12:57 ` David Hildenbrand
                   ` (2 more replies)
  0 siblings, 3 replies; 10+ messages in thread
From: Joakim Tjernlund @ 2021-10-27 12:48 UTC (permalink / raw)
  To: linux-mm

Using a fairly minimal kernel I get a big difference in Reserved memory, using:
    qemu-system-aarch64 -machine virt -kernel arch/arm64/boot/Image -cpu cortex-a53  -nographic -m 32M

I get this:
Linux version 5.11.0
Memory: 24052K/32768K available (3520K kernel code, 684K rwdata, 548K rodata, 320K init, 245K bss, 8716K reserved, 0K cma-reserved)

Versus:

Linux version 5.10.75
Memory: 11836K/32768K available (3518K kernel code, 684K rwdata, 540K rodata, 320K init, 244K bss, 20932K reserved, 0K cma-reserved)

Reserving 20 MB RAM on a 32 MB is way too much, even 8Mb is a bit much for us.

 Jocke

PS. I hope this is the right list, please advise if it is not.

^ permalink raw reply	[flat|nested] 10+ messages in thread

end of thread, other threads:[~2021-10-28 21:52 UTC | newest]

Thread overview: 10+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2021-10-27 12:48 kernel 5.10.x Reserves much more RAM than 5.11.0, 8 MB vs 20 MB Joakim Tjernlund
2021-10-27 12:57 ` David Hildenbrand
2021-10-27 13:20   ` Joakim Tjernlund
2021-10-27 13:35 ` Matthew Wilcox
2021-10-27 13:41   ` Joakim Tjernlund
2021-10-27 14:17     ` David Hildenbrand
2021-10-27 14:50       ` Joakim Tjernlund
2021-10-27 17:12 ` Yang Shi
2021-10-28  9:55   ` Joakim Tjernlund
2021-10-28 21:52     ` Yang Shi

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