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xen-users
Re: [Xen-users] Is Xen only in guests slow (tls.disabled)
> Is Xen 32-bit non-pae not affected of the slow gests problem?
> Sorry a lot of questions, I am xen newbi...
Non-PAE is also affected: any 32-bit paravirtualised Linux on an x86_32
hypervisor will be affected.
64-bit fixes the problem for both 64-bit and 32-bit paravirt guests. Other
architectures didn't have this problem in the first place.
It originally occurred because 32-bit x86 Xen and 32-bit x86 glibc both do
weird things with segmentation - and they don't coexist well as a result.
SuSE just remove the segmentation trick from glibc, as it has negligible
performance impact.
Alternative packages are available for other distros. I think RedHat's glibc
might be able to switch modes for optimum performance on Xen or bare metal,
but I may be misremembering...
Cheers,
Mark
--
Dave: Just a question. What use is a unicyle with no seat? And no pedals!
Mark: To answer a question with a question: What use is a skateboard?
Dave: Skateboards have wheels.
Mark: My wheel has a wheel!
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