Great! Is 4.18 + rt available through update_kernel.sh script? I saw that 
4_19 was available, but when trying to pass it as argument, it was not 
recognized. I am just now testing 4.9 rt to see how it does it boot.


Em domingo, 30 de setembro de 2018 14:27:15 UTC-3, RobertCNelson escreveu:
>
> On Sun, Sep 30, 2018 at 11:43 AM Paulo Sherring 
> <[email protected] <javascript:>> wrote: 
> > 
> > Hi all! I am trying to get a machinekit image optimized for the least 
> boot time I can. 
> > I am starting from the console image from here: 
> https://elinux.org/Beagleboard:BeagleBoneBlack_Debian#Stretch_Snapshot_console
>  
> > After that, I install git, pull newer kernel update scripts and install 
> ti-rt 4.14 kernel, with the options  --ti-rt-channel --lts-4_14 
> > After doing it, the boot time goes from 80 seconds - high enough already 
> - to 220+ seconds. 
> > 
> > dmesg output after updating: https://pastebin.com/U8cMQy32 
>
> Correct, "rt" in v4.14.x is slow.. 
>
> i was able to very the first 250 or so patches in the RT patchset do 
> not cause the slowdown.. 
>
> However the remaining 250 or patches are not bisectable.. 
>
> on a side note, i haven't seen the slow down with v4.18.x + rt.. 
>
> Regards, 
>
> -- 
> Robert Nelson 
> https://rcn-ee.com/ 
>

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