High utilization Low bandwith

bekax5

Limp Gawd
Joined
Jun 4, 2012
Messages
132
Hello guys,

I am with a strange behaviour on the newtork.
Two Giga NICs on a server

2nd NIC is bind to virtual machine

So the virtual machine runs XP and has a torrent software.
I used the Windows share to access the main OS's share so it would verify a torrent.

I am having both NIC's utilization around 40-45%
If I check the NIC status it count's around 40-45 MB/s of throughput

But when checking the resource monitor, Disk usage is around 3 Mbit/s and also Network is around 3 Mbit/s

I attach an image:

 

teh_chem

[H]ard|Gawd
Joined
Jun 21, 2012
Messages
1,474
So what is the apparent problem? Are you wondering why your NIC shows high throughput, but your HDD isn't showing equal read/write throughput?

What system is that screenshot of resource monitor from? Your VM, or your physical installation? What hard drives are allocated to the VM? I might be a bit slow here, but I can't put together quite what you're doing, or what it is you think should be happening.
 

bekax5

Limp Gawd
Joined
Jun 4, 2012
Messages
132
This image if from the physical installation.
I was copying a movie from Physical to Virtual, and the 1GB NICs were showing 40% usage.
However as you can check in the picture only 410 KB/s were being used on the HDD (40% usage is about 40MB/s on the NIC !!)

I just checked with iperf on both machines and the Virtual seems to have some kind of problem because it has10 Mbits/s troughput and 100% CPU usage both with gigabit NICs.
Not sure how to debug the issue...
 

bekax5

Limp Gawd
Joined
Jun 4, 2012
Messages
132
How can I find the wrong configuration is ??

I am getting between 5 - 12 Mbits/s throughput on a Gigabit NIC and huge CPU usage.
This is a Windows XP Pro Virtual Machine under VMWare Server.
 

bekax5

Limp Gawd
Joined
Jun 4, 2012
Messages
132
With iperf:


TCP:
iperf -c server -t 60 -i 5 -w 2m
11.9 Mbits/s

UDP:
iperf -c server -t 60 -i 5 -u -b 1g
238 Mbits/s


Something's really wrong...
 
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