Re: Please validate test kernel on UltraSPARC machines

HI Adrian,

John Paul Adrian Glaubitz wrote:
> Hello,
>
> recently, a kernel patch series was posted to fix issues with HugeTLB
> on UltraSPARC (sun4u) machines [1]. I have built a test Debian kernel
> which includes the patch and uploaded it to [2].
>
> Could someone test this kernel and report back whether it causes any
> regressions and also whether it possible fixes the stability issues
> we're seeing on UltraSPARC machines with newer kernels?

I gave the kernel a spin on my T2000 with Niagara. Sorry, took a while, 
but needed a spare evening, possibility to shut down, connect LIOM cable 
to another system, ssh.. etc etc.

I left it running a couple of hours, did run git on big repositories 
several time, run aptitude, compiled stuff on 32 cores. Exported GUI 
stuff thorugh X11.

No issues noted, no regressions at a first test.

Furthermore, previous kernel usually crashed itself on a hot reboot, 
requiring always a cold start (this caused me a lot of trouble testing 
in the past). I cycled a couple of reboots without issues.

No certainty, but for me this kernel is better than the previous one!

I did not run explicit stress test. I remember there was one floating 
around on this list that did lock up my system after 10 minutes or so. 
would be interesting to try.

Riccardo