Hi,
I am new in zVM world. Can anyone let me know or tell me where can I find
the zVM information of the number of devices can zVM support. Will it be
any problems if I share the same IOCDS for zOS with zVM, where the number
of devices defined in the IOCDS more than 16384. (The number of address
I guess it is 64K (from to ) The infoirmation probably is in
the z/VM General Information manual.
But, why define all z/OS devices to z/VM?
- It will consume some real storage in z/VM
- You might by accident format a volume in z/VM that z/OS is using.
- It costs some time to check them w
Thanks Alan!
Thank You,
Terry Martin
Lockheed Martin - Information Technology
z/OS & z/VM Systems - Performance and Tuning
Cell - 443 632-4191
Work - 410 786-0386
[EMAIL PROTECTED]
-Original Message-
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Alan Altmark
Kris,
I tested what you told me and it works as expected. Just one thing, no need
to code 192.20.2.182 in the HOME. It doesn't work. Just PROXYARP is needed !
Thanks
Alain
Le 29/10/08 8:54, « Kris Buelens » <[EMAIL PROTECTED]> a écrit :
> It can work: your first-level TCPIP needs to have P
The fourth quarter meeting of the Chicago Area VM (and Linux)
Enthusiasts will be held on Thursday, November 13, 2008.
We have had more speaker scheduling problems since my last note. The
agenda has changed again. Please review it.
At this point, we have only three main sessions confirmed. W
David Kreuter wrote:
>Is non-insignifcant a mutated way of saying significant?
Kind of. Litotes -- see http://en.wikipedia.org/wiki/Litotes
...phsiii (beating RSchuh to it, maybe!)
The comparison is already complicated because of different
terminology. For example what we consider the "overhead of I/O" Is
that in CPU resources, memory or I/O resources? A Linux system for
example use a cache to avoid I/O, but that means there is "memory
overhead" for I/O. And when the page
In the Z10-BC web announcement there was a comarison of Z/VM and VMware running
LINUX guests.
I have the PDF presentation if you want it I can send it to you..
Or it is probably not too difficult to find on IBM's web site.
-Original Message-
From: The IBM z/VM Operating System [mailto:[EM
I think you need to compare Linux in a z/VM LPAR versus Linux Native, and
determine if one has more i/o overhead than the other. I think the answer is
going to be 'minimal'.
As someone said, and I have observed, my CP%CPU runs at 2-3%.
As for MDC, I've been curious about that lately. About a week
On Fri, Oct 31, 2008 at 2:30 PM, Mary Anne Matyaz
<[EMAIL PROTECTED]> wrote:
> As for MDC, I've been curious about that lately. About a week ago, I turned
> off mdc for a highly active volume, and it seemed to me that resp increased
> rapidly and markedly.
It's good that you try and measure rathe
Similar story at my former customer:
At a certain time, the VM systems got a DASD subsystem that MVS no
longer needed as it was replaced by a more modern one. These MVS guys
wanted to see our IO responsetime, which was worse than on MVS.
Conclusion (from the MVS guys): VM isn't as good as MVS. I
I thought VP Q DASD will only show the CP and user defined owned volume list in
the system config ..
Hi, Everyone...
Quick question - I just want to get a daily digest...which I do...but I
am also receiving individual emails, which I don't want. I don't know
why I am getting both, since it appears in the LISTSERV settings that it
can be one way or the other for one particular email address.
On: Fri, Oct 31, 2008 at 09:50:27AM -0500,Cooper, Andy Wrote:
} Quick question - I just want to get a daily digest...which I do...but I
} am also receiving individual emails, which I don't want. I don't know
} why I am getting both, since it appears in the LISTSERV settings that it
} can be one w
On Thursday, 10/30/2008 at 10:29 EDT, David Kreuter
<[EMAIL PROTECTED]> wrote:
> Is non-insignifcant a mutated way of saying significant? The i/o code
in vm is
> like much of CP highly optimized. Overhead has been reduced greatly
since the
> XA introduction of SIE emulation. VM has low ove
No, Rich, it didn't. I even totally unsubscribed and re-subscribed as
daily digest only - and, obviously, I am still getting the single
emails.
Andy Cooper | A c x i o m CDC | z/OS and z/VM Software Services
Acxiom Software Services
312-985-3465 office | 312-287-2533 cell
555 W. Adams Street |
We have more than that in our disaster recovery environment and we
don't do anything to segregate VM from z/OS there.
So, VM is ok with that - it does take longer to IPL though.
For production, we separate out by LCU's (VM owns its own) and we
restrict the gen so that z/VM can't see the z/OS dev
I agree. My point remains that most of the virtual machines' use of the
instruction set is handled in SIE. And, while not getting carried away, great
strides of been made in CP I/O handling, like fast path, etc. And avoidance
with using MDC, shared segments, etc. also contributes to our sunny
Mark,
Sorry for being late after vacation.
I'd recommend Colin's suggestion in either case:
There is no better playground for the people you mentioned than a 2nd
level VM!!!
If you have the disk resources you even can give each trainee its own
2nd level z/VM system where he/she can test what ever
Here, many of the devices (approximately 5000) are in the LPAR profile but
excluded from VM's configuration by being included in a Not_Accepted list in
SYSTEM CONFIG. That way, they do not cause the RDEVs to be built, but can be
added via command if we ever need to access them from VM.
Regards,
On Thu, Oct 30, 2008 at 2:38 PM, Alan Altmark <[EMAIL PROTECTED]> wrote:
It's not just about intermediate nodes. It's also about the node that
runs the SFS server. While it will impact those who need the data
before you restart the server elsewhere, dropping the directory also
impacts those who wa
Hi Thomas,
Could you send me a copy of this pdf presentation?
Thanks
P
On Fri, Oct 31, 2008 at 6:28 AM, Huegel, Thomas <[EMAIL PROTECTED]> wrote:
> In the Z10-BC web announcement there was a comarison of Z/VM and VMware
> running LINUX guests.
> I have the PDF presentation if you want it I can s
Too busy to look up the reference. Besides, you used the word on this
list first, so it is only right. :-)
Regards,
Richard Schuh
> -Original Message-
> From: The IBM z/VM Operating System
> [mailto:[EMAIL PROTECTED] On Behalf Of Phil Smith III
> Sent: Friday, October 31, 2008 5:35
Put the Linux machines under AUDITORs control.
If you want something more immediate, you can code a process in PROP (or any of
the other console managers). (i.e. look for "LINUX70 LOGGED OFF" and execute a
XAUTOLOG)
Tom Duerbusch
THD Consulting
>>> Scott Rohling <[EMAIL PROTECTED]> 10/29/20
On Friday, 10/31/2008 at 12:19 EDT, Rob van der Heij <[EMAIL PROTECTED]>
wrote:
> It's not just about intermediate nodes. It's also about the node that
> runs the SFS server. While it will impact those who need the data
> before you restart the server elsewhere, dropping the directory also
> impa
Hi
Is there a command that I can use to tell me the % used of the SMF data
sets?
Thank You,
Terry Martin
Lockheed Martin - Information Technology
z/OS & z/VM Systems - Performance and Tuning
Cell - 443 632-4191
Work - 410 786-0386
[EMAIL PROTECTED]
On: Fri, Oct 31, 2008 at 10:38:22AM -0500,Cooper, Andy Wrote:
} No, Rich, it didn't. I even totally unsubscribed and re-subscribed as
} daily digest only - and, obviously, I am still getting the single
} emails.
It appears that unsubscribing from the old address didn't take then. If
you can sti
The bare minimum:
VMLINK RACFVM 301 <* Z>
QUERY DISK Z
VMLINK RACFVM 301
2008/10/31 Martin, Terry R. (CMS/CTR) (CTR) <[EMAIL PROTECTED]>:
> Hi
>
>
>
> Is there a command that I can use to tell me the % used of the SMF data
> sets?
>
>
>
> Thank You,
>
>
>
> Terry Martin
>
> Lockheed Martin - Info
vmlink racfvm 301 (i q disk .fm
Same for 302
Scott
On Fri, Oct 31, 2008 at 11:08 AM, Kris Buelens <[EMAIL PROTECTED]>wrote:
> The bare minimum:
> VMLINK RACFVM 301 <* Z>
> QUERY DISK Z
> VMLINK RACFVM 301
>
> 2008/10/31 Martin, Terry R. (CMS/CTR) (CTR) <[EMAIL PROTECTED]>:
> > Hi
> >
> >
> >
>
Phil,
Pretty not too bad post! ;-)
Mike Walter
"Phil Smith III" <[EMAIL PROTECTED]>
Sent by: "The IBM z/VM Operating System"
10/31/2008 07:34 AM
Please respond to
"The IBM z/VM Operating System"
To
IBMVM@LISTSERV.UARK.EDU
cc
Subject
Re: I/O Overhead - z/VM versus VMWARE
David Kr
Hello Thomas,
I would also appreciate a copy of this PDF.
TIA
HITACHI
DATA SYSTEMS
Raymond E. Noal
Senior Technical Engineer
Office: (408) 970 - 7978
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Patrick Leigh
Sent: Friday,
Raymond.can you send me a copy as well.Please..thanks
Danny Padilla
(623) 255 1553
_
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Raymond Noal
Sent: Friday, October 31, 2008 11:26 AM
To: IBMVM@LISTSERV.UARK.EDU
Subject: Re: I/O Overhead - z/VM versus
Thanks to the efforts of Perry Ruiter, there is now a new version of IPGATE available.
This version contains updates to IPGATE by Kris Buelens to support CMS Alternate User ID
and by Perry Ruiter to fix connection timeout errors and to allow IPGATE traffic to flow
over links that are not on the
Thanks all for the help!
Thank You,
Terry Martin
Lockheed Martin - Information Technology
z/OS & z/VM Systems - Performance and Tuning
Cell - 443 632-4191
Work - 410 786-0386
[EMAIL PROTECTED]
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECT
Hi Andy,
Listserv cannot produce both a daily digest and individual distributions
from the same subscriptions, so you have 2 subscriptions.
If you cannot determine the subscription address of the subscription you
don't want, you need the help of a list owner.
For any Listserv list, the addr
Danny,
Here you go -
HITACHI
DATA SYSTEMS
Raymond E. Noal
Senior Technical Engineer
Office: (408) 970 - 7978
From: The IBM z/VM Operating System [mailto:[EMAIL PROTECTED] On
Behalf Of Danny Padilla
Sent: Friday, October 31, 2008 12:50 PM
To: IBMVM@L
On Fri, Oct 31, 2008 at 5:50 PM, Alan Altmark <[EMAIL PROTECTED]> wrote:
> I don't understand, Rob. Every time a program writes, it must check EVERY
> call it makes to ensure it worked. It can't just blindly continue. In
> fact, if the connection between client and server is broken, all changes
I've been asked to figure out what we have in our inventory of VM and
VSE tapes, in preparation for moving to "new" drives/media.
I'm expecting to write a PIPE that will do the required summary, more or
less iterating to a final solution by operators will be able to use on
our inventory of a f
Tapemap does an excellent job of Standard Label tapes and CMS
VMFPLC2/TAPE dump datasets. Mount each tape, map it, rename the listing
with the tape number.
/Tom Kern
Wayne T Smith wrote:
> I've been asked to figure out what we have in our inventory of VM and
> VSE tapes, in preparation for moving
On Fri, 31 Oct 2008 08:28:45 -0500, Huegel, Thomas <[EMAIL PROTECTED]> wr
ote:
>In the Z10-BC web announcement there was a comarison of Z/VM and VMware
running LINUX
guests.
>I have the PDF presentation if you want it I can send it to you..
>Or it is probably not too difficult to find on IBM's w
On Fri, 31 Oct 2008 11:37:40 -0400, Alan Altmark <[EMAIL PROTECTED]
> wrote:
>On Thursday, 10/30/2008 at 10:29 EDT, David Kreuter
>While I will grant you the "optimization" point, let's not get too carri
ed
>away. In an LPAR, SIE handles guest I/O only for dedicated OSA and FCP
>adapters. All ot
Another question from the same architecture person. What is the value add
ed by z/VM over
VMWARE for a Linux workload? (That's my wording, not his.)
As usual, I don't know anything about what VMWARE can or cannot do. I'm s
ure it can run fewer
guests than VM, but not how many. VM has shared DASD
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