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From Dustin Wright <dwri...@untangledtechnology.com>
Subject Re: Slow Networking
Date Wed, 26 Oct 2016 19:59:11 GMT
Thank you for the guidance, I will execute and report back if I still face
trouble.

To further understand this VPC networking issue I created a Linux VM behind
the VPC / ipsec VPN and I'm seeing similar poor ping times. Maybe the
driver is not entirely at fault.

Here is some brief analysis.

*VPC Outside IP*
64 bytes from 192.64.185.238: icmp_seq=17 ttl=61 time=4.030 ms
64 bytes from 192.64.185.238: icmp_seq=18 ttl=61 time=4.245 ms
64 bytes from 192.64.185.238: icmp_seq=19 ttl=61 time=3.947 ms
64 bytes from 192.64.185.238: icmp_seq=20 ttl=61 time=4.003 ms
64 bytes from 192.64.185.238: icmp_seq=21 ttl=61 time=4.291 ms

*VPC Hosted Linux Instance*

64 bytes from 192.168.0.85: icmp_seq=334 ttl=62 time=10.627 ms
64 bytes from 192.168.0.85: icmp_seq=335 ttl=62 time=8.268 ms
64 bytes from 192.168.0.85: icmp_seq=336 ttl=62 time=37.855 ms
64 bytes from 192.168.0.85: icmp_seq=337 ttl=62 time=19.595 ms
64 bytes from 192.168.0.85: icmp_seq=338 ttl=62 time=7.344 ms
64 bytes from 192.168.0.85: icmp_seq=339 ttl=62 time=49.439 ms
64 bytes from 192.168.0.85: icmp_seq=340 ttl=62 time=6.376 ms

Why is the latency so terrible behind the VPC?

As a test I migrated each host and the virtual router to their on
individual server. Same problem.

Dustin

On Wed, Oct 26, 2016 at 3:22 PM, David Mabry <dmabry@ena.com> wrote:

> Dustin,
>
> Did you download the latest windows virtio drivers that are signed by
> Redhat/Fedora?  If not, you can find the latest stable ISOs at the
> following link:
>
> https://fedorapeople.org/groups/virt/virtio-win/direct-
> downloads/archive-virtio/virtio-win-0.1.126-2/
>
> Once you get the ISO downloaded, install the drivers, shutdown the VM,
> change the VM’s OS Type to be Windows PV and finally start the VM.  Windows
> will take a moment during this first boot to reconfigure its hardware and
> any reboots after this initial one should be faster.
>
> Also, you can verify the drivers being used in Device Manager.  Look for
> devices that say RedHat Virtio, or something similar to that.
>
> I hope that helps.
>
> Thanks,
> David Mabry
>
> From: Dustin Wright <dwright@untangledtechnology.com>
> Sent: Wednesday, October 26, 2016 8:16 AM
> To: users@cloudstack.apache.org
> Subject: Re: Slow Networking
>
> 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?
>
> Dustin
>
> Sent from my iPhone
>
> > On Oct 26, 2016, at 9:04 AM, Simon Weller <sweller@ena.com> 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 <dwright@untangledtechnology.com>
> > Sent: Tuesday, October 25, 2016 9:44 PM
> > To: users@cloudstack.apache.org
> > 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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