On Thu, Nov 18, 2010 at 7:20 AM, Alan Altmark alan_altm...@us.ibm.com wrote:
Also, a guest's ability to use an OSA is limited by the guest's access to
the CPU.
Very much. In many scenarios that I worked on, disk I/O throughput or
CPU was the limiting factor. I still recall one case where the
On Wed, Nov 17, 2010 at 7:41 PM, Tom Duerbusch
duerbus...@stlouiscity.com wrote:
If you have a single engine, I wonder if you are hitting the same class of
problem that Websphere has on a single engine?
I wouldn't know which class that is. Sure Java can absorb a lot of
CPU, and the more power
hi Folks..
We have a z10BC and I'm trying to get Jumbo Frames to work.
I set the MTU in Linux to 8992. BUT when I transfer, I'm only seeing
20MB/s?
Even if it's between 2 servers on the same box and subnet?
Did I misconfigure something?
Forgot to mention: z/VM 5.4, SLES10SP2 is the linux flavor
From: Karl Kingston karlkings...@ongov.net
To: IBMVM@LISTSERV.UARK.EDU
Date: 11/17/2010 12:26 PM
Subject:Jumbo Frames
Sent by:The IBM z/VM Operating System IBMVM@LISTSERV.UARK.EDU
hi Folks..
We have
Karl
Check if jumbo frames are enabled on the switch the mainframe is plugged
into.
I think cisco switches need to be reloaded after changing the system MTU
size to jumbo frames.
For networking questions I tend to go right to a packet capture of some
sort as the packets never lie - well almost
Did that. We even ran a wireshark trace and ended up seeing frame
sizes of 1514.
From: Eric Schadow escha...@davisvision.com
To: IBMVM@LISTSERV.UARK.EDU
Date: 11/17/2010 12:40 PM
Subject:Re: Jumbo Frames
Sent by:The IBM z/VM Operating System IBMVM
. If Not Excellence, What? If Not Excellence Now, When?
Tom Peters, author of The Little BIG Things
Date: Wed, 17 Nov 2010 12:26:45 -0500
From: karlkings...@ongov.net
Subject: Jumbo Frames
To: IBMVM@LISTSERV.UARK.EDU
hi Folks..
We have a z10BC and I'm trying to get Jumbo Frames to work.
I
Check if jumbo frames are enabled on the switch the mainframe is plugged
into.
I think cisco switches need to be reloaded after changing the system MTU
size to jumbo frames.
For networking questions I tend to go right to a packet capture of some
sort as the packets never lie - well almost never
Karl
Can you capture the entire TCP conversation and see the MSS size.
What is the other device?
Is the device recording the wireshark trace set to record jumbo frames?
I have had VLAN information removed by Windows nic drivers when
recording packet captures.
Eric
-Original Message
: Jumbo Frames
Sent by:The IBM z/VM Operating System IBMVM@LISTSERV.UARK.EDU
Karl
Can you capture the entire TCP conversation and see the MSS size.
What is the other device?
Is the device recording the wireshark trace set to record jumbo frames?
I have had VLAN information removed
Frames
This is a multipart message in MIME format.
--=_alternative 006CA10D852577DE_=
Content-Type: text/plain; charset=US-ASCII
MSS size is 8960
From: Eric Schadow escha...@davisvision.com
To: IBMVM@LISTSERV.UARK.EDU
Date: 11/17/2010 02:04 PM
Subject:Re: Jumbo Frames
Sent
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