On Wed, Apr 2, 2014 at 1:33 AM, Elijah Wright <[email protected]> wrote:

>
> AFAIK the linux.joyent.com kernel images should all be deprecated and
> more or less unnecessary at this point.
>
> There *was* a point in time where several of the distros did not boot out
> of the box under KVM, or include virtio
> drivers, or include useful things like the tun/tap/SWAN/whatever modules
> that people want in order to run VPN
> endpoints out of VMs.  ;-)
>
>
Life has indeed been easier since VirtIO integration in upstream kernel.

But I quite disagree on optimizations being unnecessary. They are really
crucial in cutting down the modules fat that lurks around stock kernels.
This is especially true for the enterprise distributions like oldish RHELs
and its derivatives. Stuff like
CONFIG_FB_HYPERV, CONFIG_HAVE_KVM_CPU_RELAX_INTERCEPT, etc. from optimized
kconfig do help tremendously.

In a long run, your VMs run stable and with lesser loads.


> Those issues, I'm happy to say, are now mostly behind everyone - at least
> with recent releases of the various guest OSes.
>
>
Yes. Seeing Ubuntu provide the Joyent's suggested optimizations is really
nice, though not same for every other major distro.



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