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From Dustin Wright <>
Subject Re: Slow Networking
Date Wed, 26 Oct 2016 13:16:22 GMT
I don't work in Windows much so I might just be doing it wrong. I tried to run drvload.exe
each inf file. No luck. Is there a better way to install the drivers so Windows will pick
up and change?


Sent from my iPhone

> On Oct 26, 2016, at 9:04 AM, Simon Weller <> wrote:
> Dustin,
> So just to clarify here, if you install the virtIO drivers while in non PV mode and then
switching the template to Windows PV doesn't fix the problem?
> - Si
> ________________________________
> From: Dustin Wright <>
> Sent: Tuesday, October 25, 2016 9:44 PM
> To:
> Subject: Slow Networking
> Users,
> I am facing a problem with one client running a VPC on my HVM-backed
> CloudStack 4.5.2. The machines behind the VR get poor ping times and slow
> transfers. I think the issue is the Intel network adapter driver...
> Typically I setup Windows VM's with Windows PV as the OS type and add the
> drivers in myself. That did not happen and now they have a production
> environment running the generic Intel driver.
> Anyone know how to get a standard instance setup /w the additional drivers
> so I can switch it over to Windows PV OS type? I think using the Red Hat
> VirtIO drivers will help resolve the problem.
> Any suggestions for converting a Windows instance to Windows PV? If I just
> switch the OS will not boot...
> Any known issues with the VPC VR and general slowness? I see between 50M ~
> 100M max throughput and really wild latency between 10ms -> 200ms across
> the 1000mbits data center LAN. Would the default Intel driver explain some
> of these troubles?
> Thanks in advance for any guidance you can provide,
> Dustin

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