OpenVZ Forum: Support » Dump is much faster than restore

Home » General » Support » Dump is much faster than restore

Show: Today's Messages :: Show Polls :: Message Navigator
E-mail to friend

Dump is much faster than restore [message #23567]

Tue, 20 November 2007 12:39

dagr
Messages: 83
Registered: February 2006

Member

I played around online migration and noticed that

vzctl restore $name --undump --dumpfile img_file takes about 2.5 s (on another host) , whereas

chkpnt $name --dump --dumpfile img_file - only 0.2s .

Is it normal behaviour ? (2.6.18-8.1.15.el5.028stab047.1PAE)

Report message to a moderator

Re: Dump is much faster than restore [message #23625 is a reply to message #23567]

Wed, 21 November 2007 09:21

vaverin
Messages: 708
Registered: September 2005

Senior Member

IMHO both times are very nice Smile

It may be due follwing reasons:
- chkpnt kills processes, and it is obviously faster than new process creation;
- vzctl restore starts some network configuration on Hardware Node (adds routes for VE IP, send ARP) before undumping.

thank you,
Vasily Averin

Report message to a moderator

Previous Topic:	server load problem
Next Topic:	Problem with lockedpages failcnt 192, limit 344

Goto Forum:

-=] Back to Top [=-

[ Syndicate this forum (XML) ] [

] [

]

Current Time: Fri Dec 19 12:17:17 GMT 2025

Total time taken to generate the page: 0.41326 seconds