Re: Out of Memory problem with kernel 5.16.2 and RT ptach

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 



On 2023-01-30 16:32:22 [-0300], Michel Macena Oliveira wrote:
> Hi,
Hi,

…
> -Kernel Frequency: 1000 HZ

you could use 250 or less. It does not affect timer resolution (as in
sleep() for instance) but only kernel internal timeouts.
Having a smaller values ends up with less interrupts especially with
CONFIG_PERIODIC.

…
> After I successfully installed the preempt RT kernel, I rebooted and
> tried to boot
> the RT Linux, but the system returned "Out of memory. Press any key to
> continue..."

This appears to come from grub. Later in the thread you stated the initrd
was 700MiB in size. I would have assumed that grub can handle < 1GiB but
maybe not. There is a difference in the boot protocol which means EFI
might be able to do more.

> Finally, how can I remove a preempt RT kernel installation?

if you did not package it and installed via "make install" it should be
safe to just rm the kernel + config + initrd from /boot, run update-grub
and then remove the modules from /lib/modules.

Sebastian




[Index of Archives]     [RT Stable]     [Kernel Newbies]     [IDE]     [Security]     [Git]     [Netfilter]     [Bugtraq]     [Yosemite]     [Yosemite News]     [MIPS Linux]     [ARM Linux]     [Linux Security]     [Linux RAID]     [Linux ATA RAID]     [Samba]     [Video 4 Linux]     [Device Mapper]

  Powered by Linux