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[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] 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! _______________________________________________ Xen-users mailing list Xen-users@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-users
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