| Virtuozzo Plays Well With Others |
| Tuesday, 16 May 2006 by Michel Roth | |||
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"If you think of server virtualization in terms of VMware, SWSoft's Virtuozzo will turn that thinking around." "Whereas VMware virtualizes and emulates the hardware layer, Virtuozzo runs with the native OS on the host server and creates VPSes (virtual private servers), by generating chroot jails for the host. It then tightly controls the network and kernel layers to deliver packets correctly and to handle disk, memory, and CPU quotas." "In the Virtuozzo world, all VPSes run processes natively on the host, which means even though you'll find the VPSs processes only in the local process table, the host OS will show them all. Thus, if each VPS is running Apache, the host OS will show all those processes. In terms of performance, I found Virtuozzo introduced very little overhead. In a pure static Web-serving test, I reached about 97 percent of the host systems' throughput scores when running the same test against 100 VPSes simultaneously." "Virtuozzo isn't a VMware-killer; it's an entirely different approach to virtualization, and a very well-engineered solution. Even the small shell-script tools provided with the solution are extremely well written, which is generally an indicator of solid code overall. I could say a lot more about the product, were it not for lack of space. Suffice to say I'm quite impressed with the new version from stem to stern. By the end of my testing, I was running more than 300 VPSes on my four-way DL585. Impressive." Read it all here.
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