[fedora-arm] Re: F38 on RPi4-8G

-----BEGIN PGP PUBLIC KEY BLOCK-----
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=mj1u
-----END PGP PUBLIC KEY BLOCK-----
Greetings,

Just an update: I've been running a (slightly) customize 6.3.0.y kernel
from the RPi linux repo and while it's still a wee bit sluggish
(compared to F-37), chronyd keeps perfect time and the CPU core's enter
into "WAIT" a *whole* lot less than before. Planning a source refresh
and another deep dive into the .config.   I've upgraded my x86_64 laptop
and the VirtualBox VM to 38 and they're blazingly fast.  Not sure what
the hiccup is with this aarch64 install I'm struggling with, but have
made substantial progress...

That is all.  :D


On 4/26/2023 7:39 PM, Jeremy Linton wrote:
> Hi,
>
> On 4/25/23 16:40, Randy DuCharme wrote:
>> Am I the only one having difficulties with this?  It's worse than
>> half as fast as f37 was, NTP/Chrony refuses to work..... I could go
>> on. Afraid I'm going to have to ditch this.  Kernel's been building
>> for 7 hours now.  Clocking, over-clocking, governors, schedulers make
>> no difference. Btrace, strace points to nothing. CPU load through the
>> roof though yet I don't see anything especially noteworthy.
>>
>> Thoughts?
> F38 is behaving similarly to f37 on my rpi's so...
>
> You might try installing the kernel tools, and flipping on the
> debuginfos and running something like `perf top
> --vmlinux=/usr/lib/debug/lib/modules/`uname -r`/vmlinux` if you see
> its spending a lot of time in the kernel.
>
> What process is taking all the cpu time? You might turn on the
> mem/cpu/io pressure stall fields in htop and see what is being
> reported as the major bottleneck.. but i'm guessing your on a SD or a
> USB disk?
>
> Its a big weakness of that platform that it doesn't have a reasonable
> disk interface (aka sata/nvme/etc). So one of the failure modes I've
> seen with bad SD/USB disks is that they get incredibly slow (think
> KB/sec) before they die. The stress of downloading a couple GB, delta
> RPM'ing it, installing, etc, could have pushed your disk closer to
> failure. I've killed a fair number of disks before I switched to
> USB->sata enclosures with proper SATA SSDs*, and one of the first
> indications is the whole machine starts just acting slow. 15 second
> login times from the shell, seconds to start things like htop, etc.
>
> I guess it could also be thermal throttling if your building kernels
> as you report below. I've got a fairly beefy heatsink on mine in order
> to keep the temps below the throttling limits.
>
>
> As far as time does something like `systemctrl restart
> systemd-timesyncd` fix your time issues?
>
>
> * (I've recently started using samsung T7's which are blisteringly
> fast on proper USB3 controllers, which sadly doesn't include the rpi4
> though)
>
>
>
>>
>>
>> _______________________________________________
>> arm mailing list -- arm@lists.fedoraproject.org
>> To unsubscribe send an email to arm-leave@lists.fedoraproject.org
>> Fedora Code of Conduct:
>> https://docs.fedoraproject.org/en-US/project/code-of-conduct/
>> List Guidelines: https://fedoraproject.org/wiki/Mailing_list_guidelines
>> List Archives:
>> https://lists.fedoraproject.org/archives/list/arm@lists.fedoraproject.org
>> Do not reply to spam, report it:
>> https://pagure.io/fedora-infrastructure/new_issue
>
--
Randall DuCharme (Radio AD5GB)
Powered entirely by Open Source software.