Archive for the ‘Xen’ Category

8 Vcpu per VM – VMware is behind the competitor

Posted on October 7th, 2008 in Hardware, Industry News, Virtualization, Xen | 5 Comments »

I had just setup a brand new Citrix Xensource hypervisor server today for evaluation purpose. The really impress thing that attracted myself is the 8Vcpu per VM be able to configure which over take ESX servers 3.5 update 2 today. I know that VMware has their roadmap in the future to release the 8vcpu to support processing power hungry application to be virtualized in the future.

But if we compare the technology today, I believe most of us will see that from virtual cpu perspective, VMware had been quite slow respond on that. If you do spoke to most of the VMware representative or consultant, they always told you not to allocate more than 1 Vcpu if not required.

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Xen 3.3.0 is available for download

Posted on August 26th, 2008 in Industry News, Virtualization, Xen | No Comments »

According to Heise Online, the new free XEN version 3.3.0 is now available for download.

Basically the new version come with 2.6.18 kernel version of Linux as the host system.

The Xen 3.3.0 features including:

  • Power management (P & C states) in the hypervisor
  • HVM emulation domains (qemu-on-minios) for better scalability, performance and security
  • PVGrub: boot PV kernels using real GRUB inside the PV domain
  • Better PV performance: domain lock removed from pagetable-update paths
  • Shadow3: optimisations to make this the best shadow pagetable algorithm yet, making HVM performance better than ever
  • Hardware Assisted Paging enhancements: 2MB page support for better TLB locality
  • CPUID feature levelling: allows safe domain migration across systems with different CPU models
  • PVSCSI drivers for SCSI access direct into PV guests
  • HVM framebuffer optimisations: scan for framebuffer updates more efficiently
  • Device passthrough enhancements
  • Full x86 real-mode emulation for HVM guests on Intel VT: supports a much wider range of legacy guest OSes
  • New qemu merge with upstream development
  • Many other changes in both x86 and IA64 ports

Download Xen 3.3 datasheet

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