XMing is also freely available on Windows and seems to work well enough as long
as you check the no access control check box. I've used it while running
Java applications with GUIs on z/OS. Notably for installing SAS but also for
running open source Java applications as well. I was surprised
We're just finishing up migration from a B20 Peer to Peer solution to a
7720-7720-7740 three-way grid solution. Performance has been much better, no
surprise there. I'd say we've been pretty happy, but we're currently tracking
down a cache management issue that cropped up with one of the
Is the requirement no RMF or no authorized calls or both?
If RMF is available, start the Distributed Data server and you can fetch RMF
III data with simply HTTP requests that return XML. There's other RMF
interfaces as well, I don't believe all of them require authorization.
And of course once you add in ISVs, it's even less than 2%.
The other thing that I think is interesting is to compare the cost between
4,000 MSUs and 350. Over 10x more (potential) workload for ~4x cost increase.
There's probably a number of interesting things one can say about that.
assume it assumes some reasonable normal
maximum.
Scott Chapman
On Fri, 10 Feb 2012 11:15:08 -0700, Mark Post mp...@novell.com wrote:
On 2/10/2012 at 12:37 PM, Jose Correa Saldeñojcor...@evertecinc.com
wrote:
Effective AVG MIPS/CP on a Multiprocessor z10
An z10 E26 model 701 AVG MIPS/CP
Did your total IBM software bill decline or increase during that period?
I didn't get deeply involved in software costs until c. 2008, so it took some
digging, but I did find our then current MLC costs c. 2005 when we were on
z900s and looking to go to z9s. In short, today, on z10s with vWLC,
.
Scott Chapman
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Answer: When you are using FICON.
I took a quick look at a semi-random sample of my data and saw the same thing.
So I went to the SMF manual and found this for SMF30AIC:
DASD I/O connect time, in 128-microsecond units, for address
space plus dependent enclaves. Note that the value of RqsvAIC
the
consistent workloads and then does the before/after comparisons for those
workloads. Or something like that -- remember I have no experience actually
using the product.)
Scott Chapman
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Scott Chapman
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interested, I wrote up that experience for one of my What I
Learned This Month columns for MeasureIT:
http://www.cmg.org/measureit/issues/mit80/m_80_5.pdf
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HC
alerts, and add our own in that standard facility and just consolidate them in
a different interface. Should be fairly simple to implement, but my work on
the next version of our dashboard has been pushed back by more pressing
matters.
Scott Chapman
I had an idea but I didn't perform\test
on the application and the hardware
configuration, best is to test and understand the implications of both.
Scott Chapman
On Wed, 3 Aug 2011 15:28:04 +, Pudukotai, Nagaraj S
nagaraj.s.puduko...@jpmorgan.com wrote:
Hi
The set up in our environment is that applications running in Websphere
Application
is not indicative of future gains.
Scott Chapman
Thanks. these are small datasets. I don't know why they were compressed
with Data Accelerator. We greatly overused that product. Management at
the time said: Great! Compress everything and we don't need to get any
more DASD! Management today says: Use SMS
to bespin/skywriter/ace. But this is idle
musing: I haven't explored the idea in detail, it just seems reasonable to
believe it would be possible with relatively little code. At least for the
base functionality.
Scott Chapman
On Wed, 27 Jul 2011 19:03:03 -0500, John McKown joa
At the risk of taking this thread too far afield:
Well there's always room for personal opinion for which tools you use. Some
people may prefer a Bosch driver over a Makita and others will happily pay for
the Festool. Any of them will put screws in boards. But some hands will
prefer
As somebody else stated, I wouldn't draw any conclusions from just running java
-version. A couple thoughts though:
1) Java 1.4 is really pretty old. Java 6 came out in something like 2006 or
2007, IIRC. I believe Java 7 is due soon. It's unfortunate that Java doesn't
do as good a job of
According to what support told me, workloads do not accumulate specialty engine
SUs towards the resource caps. The SUs on the specialty engines count towards
period aging, but not towards the resource group caps or minimums. Which seems
inconsistent, but probably makes some sense. But the
Why not simply quiesce it? This is readily available from SDSF.
In short, RQ does not seem to stop DDF threads from consuming
resources. At least in my quick test here.
To be honest, I think I'd never tried it because I didn't have a test case
to try it on in my sandbox and I'd only try
AFAIK, there's nothing available within z/OS itself to cancel an
individual enclave, although I certainly have wanted that capability
sometimes. This makes sense when you think about what enclaves
are: they're really sub-tasks from an address space more so than
being their own address space.
I agree with what somebody else said: DDS resource consumption has
been relatively minor for us. You only need one per sysplex and
looking at my biggest sysplex right now, over the past almost 2
months since the last IPL, DDS has consumed less than half of what
RMF + RMFGAT have consumed per
As others have pointed out, you can do similar things with USS pipes,
even from batch jobs, if you're creative/tricky. I've played with that a
little bit but haven't put anything in production with it.
If I had BatchPipes, I'd probably play with it. But for the applications I
work with
Funny you should ask. I'm working on a CMG paper about Java on
z/OS right now. The overhead is not nearly as bad as it used to be,
and on modern hardware, especially with zAAPs (or zAAP on zIIP to
forestall that point), probably immaterial for a lot of things. But you
specifically said that
expect your mileage to vary.
Find it by searching for PRS268 on the IBM tech docs if this link doesn't
come through correctly:
http://www-
03.ibm.com/support/techdocs/atsmastr.nsf/WebIndex/PRS268
Scott Chapman
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The one thing that I think is decidedly true is that the plethora of IBM
pricing metrics makes it very difficult for customers to understand and
optimize their costs. Of course that may be intentional--IBM needs to
have their revenue stream of course.
On the other hand, at least IBM is fairly
Data Portal leverages that and you can relatively easily
write your own code to do something similar.
But as I said, I haven't seen CMF so perhaps they have the same
capability. If they don't, put that as item #1 on my list for reasons to
use RMF instead.
Scott Chapman
I use JZOS. But we don't have a zAAP. Java is CPU intensive.
There's no doubt that if you don't have a specialty engine, it's much
harder to make the case for running Java on the mainframe. But I've
been playing around with it recently and the performance isn't as
abysmal as it used to be.
I'm looking at what it might be useful for.
Scott Chapman
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You can of course write C/C++ for the mainframe no problem.
There is a Perl port available, I'm not sure how up to date it is at the
moment.
You can apparently run Python within CICS, but I have no experience
with that.
I have no experience with either Ruby or CL either. Google implies
once you have the data in some structure within Java.
Scott Chapman
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As others have pointed out, the DB2 governor will let you kill threads
that have exceeded some arbitrary amount of CPU time. There's
obviously pluses and minuses to that.
Using WLM you can age those long-running queries so they drop to a
low enough importance that they don't substantially
It's not clear to me exactly what you mean, but I presume you mean
you use On/Off Capacity on Demand to upgrade the processor and
then some ISV (3rd party) software notices the processor change and
stops working because it's not licensed for that processor.
There's no way of limiting the
I'm not familiar with any variability issues that may arise out of
running under z/VM but I would guess that guest systems might find
more CPU variability than when running just under PR/SM. But that's
just a guess.
My experience has been that when we moved from z900 to z9s we
saw an
I'm not sure about Android (being a WebOS person), but if you're
worried about the Terms of Service, Verizon dropped the price of the
Palm Pre/Pixi mobile hotspot to $0. Previously they charged for it.
See:
http://www.engadget.com/2010/04/01/verizon-mobile-hotspot-on-
webos-devices-now-free/
I realize I'm late to this discussion, but if you're on the fence, why not
set yourself up so you can do both? You now readily can do so with
the z10s.
I take it you're waffling between a G04 and (perhaps) an L02. From
my chart, an L02 is very slightly more capacity than a G02. So
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Scott Chapman sachap...@aep.com
Subject
Re: 2 versus 4 processors
I'm just curious. What does that do for your software bill for the month?
Do they bill you at the highest level you use, or does that use the
highest rolling 4 hour average, or what? If you adjusted it 5 times
. First one that I can remember in a long, long time
though.
Scott Chapman
sy...@hotmail.com wrote:
I had a tape error just last week. Tapes and drives are about 5
years old.
10079 08:52:11.45 STC06292 0080 IOS000I
0121,2C,IOE,01,0600,,**,A00298,EXHPDM 504
One other advantage of having the separate LPARs is that by using
the
LPAR weights I can give preference to the total production LPAR over
what is running is development or the sysprog sandbox. In the
instances
where the total CEC is near its max (month end processing), I would
prefer that
I agree with pretty much everything Phil said--except I don't use
Outlook. I'm still using Pegasus at home.
It's not that HTML email is inherently evil, it's just that you have to be
as careful as you would surfing the web. And few people would
suggest you should completely stop using the
because
it's not clear that we have that as a user requirement. We can easily
re-transform back to a MF flat file though.
So rolling your own is possible, but not without some work.
Scott Chapman
AEP
I think there are commercial product to do this, but with the HTTP
Server and REXX SPOOL
That's exactly what my notes from a few years ago when I was trying
to figure this all out indicate. I found the source for the soft and hard
limits were handled differently for telnet users compared to every
other scenario I tested, including TSO OMVS, BPXBATCH SH, etc. But
for telnet
Been there, done that, wrote the paper. My method was presented at
CMG '07 as a late breaking paper. It seems that it's not in the
proceedings, at least I can't find it searching the CMG archives, which
is kind of annoying--presumably something to do with being a late
breaking paper. It was
A couple of releases ago, I measured an increase in CPU time for some
benchmark-type tasks that used ZFS vs. HFS when both were caching
equally. That pattern was later confirmed with one or two real
workloads. According to IBM this is not really unexpected because ZFS
does more (journaling,
Small blocksize maybe? Just a guess.
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Agreed--or at least periodically check to see if the timezone has
changed. Or even better, listen for the ENF that indicates that the
local timezone offset changed. Of course applications may still have
local time issues, but system-level things shouldn't.
Surely there is a good reason why
those resources to another system at a convenient
time.
I hope that helps.
Scott Chapman
Can you set up a sysplex so that both machines have everything
running on
each CPU in the plex, and when one system crashes the other will
automatically take over everything? Say you have SYSA and SYSB
, about a week apart for the
sysplex that has dev/test and production on the same systems.
Scott Chapman
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Right! Or applying maintenance to individual subsystems.
Looking at my IPL history, I see 6 IPLs for most of our systems in the
past 12 months, but that may be slightly high since over that time
period we've done 2 DASD replacements, changed on out the CPUs
and upgraded z/OS. It looks like
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