坑爹啊，谁说Hyper-v可以超卖

34beat

themyth 发表于 2012-7-2 00:08
根本不是技术问题，HYPER-V根本无法超售的。

來點原因?

qiqi13245

Only 2008 R2 can do this. It is available in RC at the moment and you can get more details at below URL:

http://www.microsoft.com/windowsserver2008/en/us/sp1.aspx

Dynamic memory white paper is available at:

http://download.microsoft.com/download/D/1/5/D15951B6-B33C-4A57-BCFB-76A9A6E54212/Implementing_and_Configuring_Dynamic_Memory_WP_SP1_final.pdf


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With RC SP1 you are limited to specific operating systems that can be dynamic memory.

While it might be possible to over commit the memory it does not work as well as Virtuozzo or VMWare

It dynamically adjusts the ram based on usage.

if you have 12GB of ram on the server you can start ~ 10 servers with 1GB base ram

with dynamic memory you can do the following:

20 containers with 512MB base ram and they will ramp up based on usage across the board.

Problem is when it comes to all those servers needing more than 512 each.

we have tested this and found performance degradation, some containers that restart may not start because all available resources are chewed up.

It really doesn't use page file like vmware and virtuozzo. Not sure if ms plans to commit to memory over commit or stay with its concept of dynamic memory.

It can be very dangerous for a host to oversell based on dynamic memory, you could face situations where some containers may not start

themyth

34beat 发表于 2012-7-2 00:12
來點原因?

只有动态内存功能。
当你分配动态内存为128M-1G时
如果系统当前使用不到128M 系统里只显示最大内存128M
当系统使用到500M，系统里显示的内存就是500M。
当内存真正使用到1G，系统就显示1G。

用多少，显示多少，所以，等于无法超兽，用户看到的都是当前实际内存。

xaut3

HYPER-V 是什么技术呀

yu410502

xaut3 发表于 2012-7-2 00:54
HYPER-V 是什么技术呀

微软的垃圾货

你丫的

星外介绍说是能超兽啊

你丫的

3.星外VPS功能正式支持动态内存功能，允许超开VPS。