On Fri, Nov 21, 2008 at 4:01 PM, Andy Robertson
[EMAIL PROTECTED] wrote:
I'm very grateful for the replies I have gotten on this subject, but they
are not addressing the main issue
To rephrase it:
If I do NOT do anything to stop the passwords of these users expiring (or
equivalent
On Wed, Nov 19, 2008 at 8:05 PM, David Kreuter
[EMAIL PROTECTED] wrote:
do #CP TRACE ESSA RUN
and see what happens!
I'm not sure you will see anything... The ESSA is done under SIE and
I'm not convinced that the trace will change that...
If you have not disabled it on z/VM, then Q MEMASSIST
since it is of little interest for the folks on the
list.
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On Wed, Nov 12, 2008 at 12:10 AM, Alan Cox [EMAIL PROTECTED] wrote:
Good JIT engine emulation these days is a lot lot better than that. You
do need a lot of memory to make that work well.
Some popular modern techniques around JIT do not work very well in a
shared environment, as we found with
it towards the edge for a long time without any damage. But once you
cross the line, you spill all the coffee. Not just the portion that
was sticking out over the edge of the table.
Rob
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On Tue, Nov 4, 2008 at 9:53 PM, Livio Sousa [EMAIL PROTECTED] wrote:
q cplevel
z/VM Version 5 Release 3.0, service level 0701 (64-bit)
Generated at 05/29/07 23:21:12 BDT
IPL at 04/25/08 12:58:27 BDT
Ready; T=0.01/0.01 18:51:30
The RSU level is not uptodate, do you believe that this can be
very non-responsive.
Rob
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On Thu, Oct 30, 2008 at 9:05 PM, Marcy Cortes
[EMAIL PROTECTED] wrote:
Maybe I should have let them stare at the dumps for a few more weeks ;)
When you had your fun with it, you might want to put it as CP commands
in the directory entry of AUTOLOG1 for example.
On Thu, Oct 23, 2008 at 4:52 PM, Marcy Cortes
[EMAIL PROTECTED] wrote:
Yes. Configured as accelerators.
No figures. There isn't a velocity report on them (no monitor data
perhaps?). But the comments from the applications folks was pretty
close to non-SSL.
Benchmarking it is not trivial
On Tue, Oct 21, 2008 at 10:54 PM, Malcolm Beattie
[EMAIL PROTECTED] wrote:
Actually, it's not an MCM (Multi Chip Module) in the z10 BC, it's
six SCMs (Single Chip Modules): 4 separate SCMs for the 4 separate
Enterprise Quad Core chips (3 active in each) and 2 other SCMs for
the SC (System
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On Sat, Oct 18, 2008 at 2:07 PM, Richard Gasiorowski [EMAIL PROTECTED] wrote:
I must be missing something. My original question was does IBM have an
LX86 product for zLinux. The answer is no. So are you other vendors
saying you have something that works or not. I am not talking windows
at least make the
trade-off and see whether the extra 20% is worth the cycles.
Rob
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On Sun, Sep 14, 2008 at 2:26 AM, John Summerfield
[EMAIL PROTECTED] wrote:
I may have missed something. Is there no way that a virtual machine
cannot have use of a clock, corrected for drift, that reflects the
correct time of day, either now or in the future? A TOD clock that does
_not_
On Thu, Sep 11, 2008 at 7:09 PM, Mark Post [EMAIL PROTECTED] wrote:
While this discussion has been going on, I've been wondering if hwclock
--hctosys might not be the lowest impact method available. The problem
being that hwclock currently isn't included in the util-linux RPM for SLES,
the
clock during boot and run ntpd -q via cron once a day (but not all at
the same time since that makes things worse). Fortunately all System z
clocks that I have seen run a bit too slow, so once the clock is
right, the scheduled ntpd -q will not step it back.
Rob
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On Wed, Sep 10, 2008 at 5:22 PM, Fargusson.Alan
[EMAIL PROTECTED] wrote:
How do you get z/VM to coordinate with the rest of the world?
We also played with VTOD support. When you make one virtual machine
pick up the proper time after IPL, the other virtual machines can pick
up that first
and adjust the skew in the kernel. Normally
this is not a serious factor, and will not cause a lot of wake-up. But
because init scripts are written for a Linux PC with different TOD
architecture, ntpd gets confused and assumes incorrectly that there is
a large drift that must be corrected.
Rob
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I expect the problem is using 'dd' for the copying may not get the
magic signatures that makes the disk a CDL format, so the driver ends
up seeing it as LDL and gets things misaligned. But you should be able
to notice that when the new system is booting.
Have you considered using DDR or such to
On Thu, Aug 14, 2008 at 5:36 PM, Fargusson.Alan
[EMAIL PROTECTED] wrote:
There have been several times when people have posted to this list asking for
help recovering when a LVM containing the root filesystem has gone bad. It
may be that when using VM you have more of a chance of messing
On Thu, Aug 14, 2008 at 5:30 PM, Fargusson.Alan
[EMAIL PROTECTED] wrote:
It is not the case the /boot is the issue. As soon as the kernel starts it
mounts the root. If mounting the root fails then the kernel gives up, and
you have to recover the root filesystem.
The motivation to split
On Wed, Aug 13, 2008 at 2:44 PM, RPN01 [EMAIL PROTECTED] wrote:
Our problem with this scenario comes from cloning and LVM: If the penguin is
a clone, its LVM volume groups are likely to have the same names as the
rescue penguin, in which case, you likely won't get them mounted properly.
On Wed, Aug 13, 2008 at 3:55 PM, McKown, John
[EMAIL PROTECTED] wrote:
Just out of curiousity, why a special machine? Wouldn't it be possible
for every Linux guest account to have a RR link to the required rescue
volume(s)? Every Linux guest would LINK those at some standard, HIGH
address.
On Wed, Aug 13, 2008 at 5:50 PM, RPN01 [EMAIL PROTECTED] wrote:
Current standard here is to have /boot as a physical volume, root, var, tmp
and some swap (yes, we're moving to v-disk swap) in LVM vg_system on one
3390 mod 9 and /home and /opt in LVM vg_local on a second 3390 mod 9. There
are
On Wed, Aug 13, 2008 at 7:41 PM, RPN01 [EMAIL PROTECTED] wrote:
The other bad thing about avoiding LVM is that you are then limited by the
size of your largest physical disk. If all you have are 3390 mod 27's, then
you avoid your users when they need more than 22gig in a filesystem. We have
On Tue, Aug 12, 2008 at 9:18 PM, RPN01 [EMAIL PROTECTED] wrote:
The linemode console is much more versatile, and the only time you'll
actually sit at it is when you're in trouble; at any other time, you'll just
walk away from it and use a ssh or telnet (not advised) connection.
Learn a bit
On Fri, Aug 8, 2008 at 7:54 PM, McKown, John
[EMAIL PROTECTED] wrote:
Regardless of the license on x3270, you can look at the code to reverse
engineer / document the protocol. If you write your code from the
ground up, then you can license it however you want. It's only if you
borrow code
to it, and understand whether
the server is too large or too small. You lose some of that when using
DCSS.
Rob
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On Wed, Aug 6, 2008 at 6:19 PM, Bauer, Bobby (NIH/CIT) [E]
[EMAIL PROTECTED] wrote:
dasd(eckd): 0.0.0201: 3390/0A(CU:3990/01) Cyl:3338 Head:15 Sec:224
The 3338 cylinders suggests that you have (wisely) given the Linux
guest a mini disk starting at cylinder 1, so cylinder 0 is for CP to
do its
On Mon, Aug 4, 2008 at 2:53 PM, John Summerfield
[EMAIL PROTECTED] wrote:
What do you think needs the protection of AV software? (I'm not having a
shot at you, your answer goes to define the kind of information you
need: my choice of motor vehicle is a little unusual, and it's probably
not
On Thu, Jul 17, 2008 at 6:33 PM, Peter 1 Oberparleiter
[EMAIL PROTECTED] wrote:
There are technical requirements(*) that need to be met by a lv setup
to be supported without completely redoing the current disk IPL
mechanism used for Linux on System z. The aim of any zipl enhancement
into that
On Wed, Jul 16, 2008 at 11:53 AM, Robin Atwood [EMAIL PROTECTED] wrote:
Should I try to mount the actual partitions under boot sequentially? I am new
to RAID and am not sure how to proceed.
If you want to make another disk bootable you must specify the right
directory (and that must be on the
On Wed, Jul 16, 2008 at 12:32 PM, Robin Atwood [EMAIL PROTECTED] wrote:
I think the problem is that my target device is /dev/md1 which is not a real
disk, it's a pseudo-device manufactured by the mdadm command from two real
partitions.
That sure is a problem. But since you don't write to the
On Wed, Jul 16, 2008 at 12:58 PM, Robin Atwood [EMAIL PROTECTED] wrote:
That's what I am beginning to think. :( I was hoping someone on the list has
tried this and has a definitive answer.
Yes, zipl uses specific ioctl() calls of the eckd driver to write the
IPL record etc.
-Rob
On Tue, Jul 15, 2008 at 6:22 AM, Alan Altmark [EMAIL PROTECTED] wrote:
You're missing our point, Erik. Making a change, whether Good or Ill,
eliminates the support that our employers have PAID FOR. That means no
support for the rest of the kernel that remained UNchanged.
Not only the kernel
On Mon, Jul 14, 2008 at 12:49 AM, Erik N Johnson [EMAIL PROTECTED] wrote:
for your needs. There's a whole community out there that can pick up
the slack. That's the point. Not whether anybody should be hastily
changing the format of enterprise file systems.
Most certainly. But just the
On Mon, Jul 14, 2008 at 10:04 AM, Mark Perry [EMAIL PROTECTED] wrote:
Rob van der Heij wrote:
On Mon, Jul 14, 2008 at 12:49 AM, Erik N Johnson [EMAIL PROTECTED]
wrote:
(and I believe that is one of the reasons Red Hat is less eager
to take s390 patches from IBM under the counter).
What
On Mon, Jul 14, 2008 at 11:25 AM, Mark Perry [EMAIL PROTECTED] wrote:
I just think it is unfair to imply that IBM is doing anything under the
counter. If you watch the LKML you will frequently see contributions
from IBM developers.
I did not mean that unfair and should have searched for
On Sat, Jul 12, 2008 at 10:58 AM, John Summerfield
[EMAIL PROTECTED] wrote:
I generally agree with those sentiments, but I would also consider
vendor support now and in the future.
I consider ReiserFS still a bit niche development. If it is not
carried by the masses, some of the open source
. It may be that the YaST installer tempted you
into that. I see that more as a convenience to end-users, and expect
that it rarely plays a role in servers. Most things in servers are
done through FQN or just the host name in one single domain.
Rob
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http
to double check the directory
entry. When you use dedicated volumes, it may be the volume was missed
in the restore (or shifted by 1 cylinder).
Rob
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user. If not, then we'd be happy to look at
raw data from the z/VM 3.1 guest if you can capture that (we can talk
off-line to discuss how to transfer the data).
Rob
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On Thu, Jun 19, 2008 at 5:11 PM, Malcolm Beattie [EMAIL PROTECTED] wrote:
I wrote writetrack and readtrack kernel modules for Linux 5 years
ago which implement ioctls to do that along with simplistic userland
utilities and they worked OK for me to transfer various VM and z/OS
disks as images
On Wed, Jun 18, 2008 at 2:51 AM, Scott Rohling [EMAIL PROTECTED] wrote:
- Use PIPEDDR to write to a file and FTP this file to your Linux server
I'm tempted to think that using temporary files to hold a copy of the
raw tracks is a royal PITA (though if you squish or even compress the
tracks, it
is probably significant.
With the later kernel releases that use the virtual cpu accounting
(recognized by the reporting of steal percentage) the basis is virtual
time rather than total time. So anything done by CP on behalf of this
Linux virtual machine is reported by Linux as unused.
Rob
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On Thu, May 29, 2008 at 8:10 PM, David Boyes [EMAIL PROTECTED] wrote:
Key phrases: if asked to do so and data it collects. GIGO.
I believe you have not even tried... Performance Toolkit only
maintains history information for a limited set of system-wide
metrics. That's all. And yes, if you can
On 5/27/08, McKown, John [EMAIL PROTECTED] wrote:
I have a friend with EMC who is very excited about the new SSD
subsystems which are beginning to appear. They sound very nice. Being
green and all.
The challenge is lifetime. You can't rewrite flash that often and the
various vendors
On Fri, May 23, 2008 at 6:20 AM, John Summerfield
[EMAIL PROTECTED] wrote:
If I created a self-signed certificate for example.com, it would not be
to provide my identity to the public at large, but for use within a
small group. Not everyone needs _that_ level of security.
Sure, context. If
On Fri, May 23, 2008 at 3:24 PM, David Boyes [EMAIL PROTECTED] wrote:
I suspect its success depends on the near universal penetration
of mobile phones in Finland.
Right. When you visit Finland for vacation, make sure to go to the
restrooms before you leave home.
On Thu, May 22, 2008 at 2:36 AM, John Summerfield
[EMAIL PROTECTED] wrote:
Huegel, Thomas wrote:
Well, yes I can (did) make a SELF-SIGNED certificate and it works fine.
But my auditor doesn't like it.
Why?
Isn't it like when the cops pull you over and you show them a
hand-written piece of
I've suggested before that the resource efficiency of applications is
reverse proportional with the percentage of people able to program on
the platform... It appears I can use this table ... ;-)
Rob
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On Mon, May 19, 2008 at 3:47 PM, Adam Thornton [EMAIL PROTECTED] wrote:
You can get the Rexx alternate exec processor from the VM downloads
site at vm.ibm.com. It's free. It's basically a module that is
enough like the compiled Rexx runtime that you can run compiled rexx
programs.
Not
for accounting purposes as well.
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On Thu, May 15, 2008 at 3:35 PM, Thomas Kern [EMAIL PROTECTED] wrote:
It you would do charge back you could have budget to buy stuff ;-)
I have accounting cards and rexx and pipelines and wanted to see if
there were any use of NEW tools in LINUX for processing this data.
Apparently no one has
On Tue, May 13, 2008 at 10:51 PM, Fargusson.Alan
[EMAIL PROTECTED] wrote:
vmlink esamon 198
DMSVML2067E Unknown disk nickname (ESAMON)
Try VMLINK .dir ESAMON.D198
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On Mon, May 12, 2008 at 2:48 AM, Lee Stewart
[EMAIL PROTECTED] wrote:
Is there anything in the rescue kernel that is NOT in the regular
kernel? (Any reason to use the rescue kernel as opposed to just
linking to the penguin with a problem from on that is happy?)
I have always avoided the
2GB because
some things in live need to happen under the Bar (like channel
programs). So when all is under the Bar (vmsize 2G) you just have
one zone.
Rob
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Could it be you're following x86 tuning guidelines rather than Linux on z/VM ?
If so, then getting an error because vm.heap-stack-gap does not exist
is the least of your problems.
Rob
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On Thu, Apr 17, 2008 at 3:02 PM, Grasso, M. - SPLXM [EMAIL PROTECTED] wrote:
However, my management would like to see money saving arguments before
allowing an investigation.
That's going to be a tough one. CMS is highly efficient for the
typical systems management tasks that people do with
n Wed, Apr 16, 2008 at 11:51 AM, Hubert Kleinmanns [EMAIL PROTECTED] wrote:
thanks for the explanation of the phrase I used. You are right, I meant Can
you be more specific about the issue you found with MQ and SUSE? and was
slightly surprised about the answers.
:-) Such things can be
On Tue, Apr 15, 2008 at 12:34 AM, John Summerfield
[EMAIL PROTECTED] wrote:
Until the vendors change their approach, administrators are going to be
working that way.
But isn't that why folks bother to hang out on mailing lists and learn
how to improve their way of working?
I consider the
convenient IMHO is to have another running Linux server reach out
to the disks of the dead server and mount them. That way you have all
the tools you need to fix things (though it may be that current
LVM-tools have a strong one-system mindset).
Rob
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On Tue, Apr 15, 2008 at 3:56 PM, RPN01 [EMAIL PROTECTED] wrote:
RedHat and SuSE expect administrators to use the root account because It's
always been done that way. But, when you have more than one administrator,
and especially if you have more than a hand-full, like six to fifteen, then
On Mon, Apr 14, 2008 at 2:43 PM, Evans, Kevin R [EMAIL PROTECTED] wrote:
We don't have a problem...I was only replying to an inquiry from Robert Nix
where he asked what distro people used and why. What I was saying was some
backup to why we use RHEL.
We see that Red Hat is more strict than
On Tue, Apr 1, 2008 at 11:52 AM, Mark Perry [EMAIL PROTECTED] wrote:
I will not be viewing this because I use Linux on my PC and Windows is
required, ironic huh?
But then you don't need this anymore. Only the users of that other
operating system have problems to solve ;-)
Rob
their own life boats. With Linux on z/VM you
have a lot of material to build such a (remotely operated) life boat.
Rob
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systems) the scheme gets
very neat. It also saves you on disk resources and backup
requirements.
Rob
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though there is a cost involved in extra virtual
machines and communication overhead, the advantages normally make up
for that.
Rob
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applicable servers for everyone who needed it. I found it a very
interesting approach to push that ratio.
Rob
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Linux on z/VM configuration.
That's why we claim you need to see both sides of the equation.
Rob
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requirements for disk space. Or you might be
able to mount the data via NFS and maybe avoid the duplication of
data.
Rob
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.
I'd not share /tmp with other systems.
I did not mean to suggest you could share /tmp with others. But if you
use /tmp to hold a copy of a package that you FTP into each server,
they may be more attractive options.
Rob
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) in the command line
and use PF2 instead of Enter. Without the SUBSTITU you could set a
PF-key to do ^c entirely. Or you could leave out the IMM and type PF2
c Enter.
Rob
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it (since you will make CP emulate it, which
increases your CPU usage).
Rob
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need things
indexed like that. Running something as background process to maintain
such indexes is likely to be a bad thing for scalability. I also
switched off the things that build a cache for the find command.
Rob
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interface
will get you pretty close to what you're looking for.
Rob
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to the same Linux server? I recall the default
setup is pretty stubborn in doing a firewall for no good reason...
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/ccwgroup/devices/0.0./fake_ll )
Rob
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From the knitpicking gallery: rather than best practice I would call
it common practice
I see some similarity with a recent discussion about allocation of
cylinder 0 as page. We know that CP does not mind and there should be
no issue. Still, for several good reasons people tend to avoid doing
level
until we know more.
Rob
PS It would also be interesting to hear which configurations were
compared in the measurements that IBM published. If CMMA was disabled
with the evil kernel option, then we may be comparing different
things.
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On Wed, Feb 27, 2008 at 2:20 PM, Heiko Carstens
[EMAIL PROTECTED] wrote:
I have no idea what's possible with an undocumented instruction ;-)
If nothing else, we can get a CP PTF to only enable it on the 2nd ESSA
instruction...
Ah no... we can fix that. If you like to patch your kernel
looked up the macro, and better
first find a source to apply the patch to before I dare to comment on
the longer code path and where that would occur.
Rob
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often see CP take pages
that are paged out already, which is not good. If the cmma stuff does
not change the z/VM demand scan then I think it's a missed
opportunity.
Rob
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the
feature, installations could just disable it on system level rather
than depend on what the virtual machine decides. Unless it is the code
in Linux SP1 that requires we don't use it...
Rob
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by
default. I would want to know why, and under what circumstances it is
appropriate to override that default and use it...
Rob
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On Feb 20, 2008 10:20 AM, Mark Post [EMAIL PROTECTED] wrote:
I'm not betting on it. It hasn't happened so far, and it's been about 7 or 8
years.
So how many different names did we have in 8 years.. and I would not
even be surprised if IBM now would start to use a product name that we
already
On Feb 11, 2008 2:31 PM, Bruce [EMAIL PROTECTED] wrote:
I'm trying to rpmbuild Bacula under SLES 10 SP1, I'm getting this error
what does it mean, Any ideas
Bruce,
I believe you asked the same question 8 days ago, and several people
responded with suggestions to explain it and on how to fix
On Feb 17, 2008 4:25 PM, Edmund R. MacKenty
[EMAIL PROTECTED] wrote:
I didn't catch which distro it was, but they probably replaced all the init
scripts with custom work anyway.
And slashdot had a link that Singapore Airlines offers a personal Red
Hat Linux desktop in every seat with USB plug.
earlier this week about the same subject.
Rob
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On Fri, Feb 15, 2008 at 10:04 AM, Jose Raul Baron [EMAIL PROTECTED] wrote:
Why is it that there's the same problem everywhere ?
Life would be much easier and problems could be solved faster and better
with just some more DASD but it seems like the management guys must create
the dasd
lab environment with only one virtual machine and an
infinite number of real IFLs installed.
Rob
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On Feb 12, 2008 5:51 PM, Brad Hinson [EMAIL PROTECTED] wrote:
You caught me. I agree, it is much better to patch it correctly. But
at ~2500 lines, the bacula spec file is a beast to edit, and I thought
that would scare off any newcomers to rpmbuild. :)
And rpm-wise, would a separate
requirements. Takes
measurements and active tuning.
That's the techniques I used to run 100 Linux servers with apache on a
P/390 with 128M memory (and find CPU was more limiting than memory).
Rob
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in a virtual
machine for testing, training and development purposes. Being able to
run more z/OS images is a big plus in such cases. The distinction
between production and development depends a lot on your perspective
and expectations.
Rob
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On Feb 1, 2008 2:52 PM, Mark Perry [EMAIL PROTECTED] wrote:
Gee, I really want to comment, can I, dare I ?
In der Beschränkung zeigt sich erst der Meister
-Rob ;-)
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performance is not available via command, but is in the data stream
fed to a performance monitor.
And if you don't think you have the skills to evaluate the reports
yourself, you might want one where tuning assistance is included with
the support for the product.
Rob
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On Feb 1, 2008 11:36 PM, John Summerfield [EMAIL PROTECTED] wrote:
Rob van der Heij wrote:
On Feb 1, 2008 2:52 PM, Mark Perry [EMAIL PROTECTED] wrote:
Gee, I really want to comment, can I, dare I ?
In der Beschr�nkung zeigt sich erst der Meister
My eyes got parity errors, they can't
On Jan 30, 2008 12:28 AM, John Summerfield
[EMAIL PROTECTED] wrote:
I can understand that some (many) value certification, but does everyone
require it?
I believe that when running commercial middleware on a distribution
that is not certified, it means that the vendor will not provide
support
On Jan 30, 2008 3:50 PM, Jose Raul Baron [EMAIL PROTECTED] wrote:
don't know if that was due to good luck or the result of our prayers... ;-)
That sounds like a pray requirement that IBM should put in the PSP
bucket :-)
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