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Re: [ANNOUNCE] first stable release of OpenVZ kernel virtualization solution [message #447 is a reply to message #446]

Tue, 06 December 2005 03:20

Andrew Morton
Messages: 127
Registered: December 2005

Senior Member

Kirill Korotaev <dev@sw.ru> wrote:
>
> Hello,
>
> We are happy to announce the release of a stable version of the OpenVZ
> software, located at http://openvz.org/.
>
> OpenVZ is a kernel virtualization solution which can be considered as a
> natural step in the OS kernel evolution: after multiuser and
> multitasking functionality there comes an OpenVZ feature of having
> multiple environments.

Are you able to give us a high-level overview of how it actually is
implemented? IOW: what does the patch do?

> ...
>
> As virtualization solution OpenVZ makes it possible to do the same
> things for which people use UML, Xen, QEmu or VMware, but there are
> differences:
> (a) there is no ability to run other operating systems
> (although different Linux distros can happily coexist);
> (b) performance loss is negligible due to absense of any kind of
> emulation;
> (c) resource utilization is much better.

What are OpenVZ's disadvantages wrt the above?

> The dynamic assignment of resources in OpenVZ can significantly improve
> their utilization. For example, a x86_64 box (2.8 GHz Celeron D, 1GB
> RAM) is capable to run 100 VPSs with a fairly high performance (VPSs
> were serving http requests for 4.2Kb static pages at an overall rate of
> more than 80,000 req/min). Each VPS (running CentOS 4 x86_64) had the
> following set of processes:
>
> [root@ovz-x64 ~]# vzctl exec 1043 ps axf
> PID TTY STAT TIME COMMAND
> 1 ? Ss 0:00 init
> 11830 ? Ss 0:00 syslogd -m 0
> 11897 ? Ss 0:00 /usr/sbin/sshd
> 11943 ? Ss 0:00 xinetd -stayalive -pidfile ...
> 12218 ? Ss 0:00 sendmail: accepting connections
> 12265 ? Ss 0:00 sendmail: Queue runner@01:00:00
> 13362 ? Ss 0:00 /usr/sbin/httpd
> 13363 ? S 0:00 \_ /usr/sbin/httpd
> 13364 ? S 0:00 \_ /usr/sbin/httpd
> 13365 ? S 0:00 \_ /usr/sbin/httpd
> 13366 ? S 0:00 \_ /usr/sbin/httpd
> 13370 ? S 0:00 \_ /usr/sbin/httpd
> 13371 ? S 0:00 \_ /usr/sbin/httpd
> 13372 ? S 0:00 \_ /usr/sbin/httpd
> 13373 ? S 0:00 \_ /usr/sbin/httpd
> 6416 ? Rs 0:00 ps axf

Do the various kernel instances share httpd text pages?

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[Message index]

		[ANNOUNCE] first stable release of OpenVZ kernel virtualization solution By: dev on Mon, 05 December 2005 19:13
		Re: [ANNOUNCE] first stable release of OpenVZ kernel virtualization solution By: Andrew Morton on Tue, 06 December 2005 03:20
		Re: [ANNOUNCE] first stable release of OpenVZ kernel virtualization solution By: dev on Tue, 06 December 2005 15:39
		Re: [ANNOUNCE] first stable release of OpenVZ kernel virtualization solution By: dev on Tue, 06 December 2005 11:48
		Re: [ANNOUNCE] first stable release of OpenVZ kernel virtualization solution By: dev on Tue, 06 December 2005 11:59
		broken-out patches By: dev on Mon, 12 December 2005 13:21
		Re: [ANNOUNCE] first stable release of OpenVZ kernel virtualization solution By: dev on Tue, 06 December 2005 11:55
		Re: [ANNOUNCE] first stable release of OpenVZ kernel virtualization solution By: Ingo Molnar on Tue, 06 December 2005 12:01
		Re: [ANNOUNCE] first stable release of OpenVZ kernel virtualization solution By: Ingo Molnar on Tue, 06 December 2005 13:11
		Re: first stable release of OpenVZ kernel virtualization solution By: Andrey Savochkin on Tue, 06 December 2005 14:01
		Re: [ANNOUNCE] first stable release of OpenVZ kernel virtualization solution By: Philippe Pegon on Sat, 10 December 2005 11:22
		Re: [ANNOUNCE] first stable release of OpenVZ kernel virtualization solution By: dim on Sat, 10 December 2005 12:18

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