VirtualBox

Ticket #6474 (closed defect: fixed)

Opened 4 years ago

Last modified 3 years ago

High CPU when changing network to NAT

Reported by: xok Owned by:
Priority: major Component: network
Version: VirtualBox 3.1.6 Keywords: nat, bridge, network, high cpu
Cc: Guest type: Windows
Host type: Windows

Description

Hi,

Host is Win XP SP3, Guest is Windows Server 2003.

Start the VM as bridge, when OS is running, change the network connectivity to NAT.

Any request to the Internet (e.g. IE) will push up the CPU to 100% use up to 7 ou 8 seconds.

Setting back to bridge connectivity will get back to normal.

Attachments

_cssdgo-2010-04-01-19-23-08.log Download (60.9 KB) - added by xok 4 years ago.
_cssdgo-2010-04-01-19-23-08.2.log Download (60.9 KB) - added by xok 4 years ago.
_cssdgo-2010-04-06-17-13-02.log Download (49.8 KB) - added by xok 4 years ago.

Change History

comment:1 Changed 4 years ago by Hachiman

Could you please attach log file?

comment:2 Changed 4 years ago by xok

Hello,

I have made an regression to v3.1.4, the version v3.1.6 seems to consume a lot of CPU.

Changed 4 years ago by xok

Changed 4 years ago by xok

Changed 4 years ago by xok

comment:3 Changed 4 years ago by Hachiman

"use up to 7 ou 8 seconds" does it mean that cpu usage up to 100% for 7-8 seconds ant then calm down? What happens if start vm with NAT networking?

comment:4 Changed 4 years ago by xok

"use up to 7 ou 8 seconds" does it mean that cpu usage up to 100% for 7-8 seconds ant then calm down?

Yes, when changing adapter type and using NAT consumes a lot of CPU (e.g. browsing on the web and using Numara Track-It! Server / Client) when compared to Bridge.

I have made an regression for 3.1.4, which seems more stable in my environment (notebook Asus M50SV) and consumes a lot less CPU.

comment:5 Changed 4 years ago by xok

" What happens if start vm with NAT networking? "

Now that you are asking, I dont quite remember if I had started in NAT..

comment:6 Changed 3 years ago by frank

  • Status changed from new to closed
  • Resolution set to fixed

Please reopen if still relevant with VBox 4.0.4.

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