[Xen-users] About the time of live migration, it is too long

To:	xen-users@xxxxxxxxxxxxxxxxxxx
Subject:	[Xen-users] About the time of live migration, it is too long
From:	"Yin Xu" <ronee.9@xxxxxxxxx>
Date:	Thu, 29 May 2008 22:09:05 +0800
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Hi,all

I am currently doing some research about the live migration feature of xen. It is said that the downtime can be less than 1 sec. But I can not get this result. I being the live migration ,and "ping" the guest IP,and found the total down is more than 30 seconds. Than I tried migration without live it only stop about 15 minutes!

So I am really puzzled about the result, why this happen?

By the way, my system configuration is:

The source server: cpu:Intel(R) Xeon(TM) CPU 2.40GHz Mem:512M(I also try with Intel(R) Pentium(R) D CPU 2.80GHz Mem 512M, the same as the dest server)

The dest server: Intel(R) Pentium(R) D CPU 2.80GHz Mem 512M

the guest os:Mem 128

all the operation system kernel is 2.6.18, the xen is 3.1.1, installed with centos5

All the machine is interconnected by a 1 Gbps Ethernet switch

I am not sure am I describe my situation clearly. Any question about my environment is welcome.

And any suggestion is welcome, thanks.

--
Yin Xu(ronee)
Information Security
Department of Computing and Information Technology
Fudan University
Shanghai, P.R.C.

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