Re: Virtual Server Performance Issue

You need to define this more close to the issue.
I'd check :
a) actually isssue - read/write,
b) IOPS on disk/LUN that is attached to your VS.
c) copy file using some other method (MS copy or ftp might be issue
sometime) if they are using firewall.
d) copy file from the same VS server to same vs server (it will test the
IOPS), compare it with the network file copy.
e) depneds what OS u are using on VS , grab some sniffer logs and check for
the TCP performance.
f) Network retransmission - jumbo frame queueing.

Ask performance report from cloud provider for the VS.

On Mon, Apr 16, 2012 at 5:57 PM, Julian Ko <julian13901_at_gmail.com> wrote:

> Hello, Group
>
> This is not only network related issues, but VMWare(Virtual Server Issues).
> If anyone can give me any related comments, I'll be really appreciated.
>
> Well, recently I have been complained about Virtual Server performance
> issues. Users were complaining about slowness such as when they copying
> files on virtual servers on VMWare. I tries to clear out there are no
> network related issues, which affect on virtual server environment. But
> one thing that came to my mind is this issue is related with VMWare
> setting.
>
> Currently, there are multiple virtual servers on VMWare base, which is
> installed in one physical server. The physical server and network switch is
> connected to two ports(Port Channel). So, what I'm thinking is that if
> multiple virtual servers access to the same network segment, if a certain
> virtual server occupies this limitted network resource, it may affect other
> virtual servers network performance.
>
> Well, if this is the case, or if anyone had similar issues, please feel
> free to give me comments or advice.
>
> Thanks in advance and regards,
> Julian
>
>
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Received on Mon Apr 16 2012 - 19:16:16 ART