Over the years I’ve written emails with data collection requirements dozens of times, with varying degrees of clarity. It would be better, wouldn’t it, to write it once. I don’t think I can get out of the business of writing such emails entirely but here’s a goodly chunk of it. Another thing that struck me is that the value of some types of data has increased enormously... [More]
Tags:
dfsort
z/os
smf101
rmf
smf
smf30
wlm
batch
db2
terse
ftp
mq
cics
|
It’s possible I’ve written something about this before:
My blog is so extensive now it’s hard to find out exactly what I’ve written about (and I’m going to have to do something about that). I say “written something ” because I know for sure I haven’t written about the SMF record field I want to introduce you to now. Previously If when you send me... [More]
Tags:
wlm
ddf
service_class
r723plsc
smf30
smf72-3
smf72
report_class
rmf
|
You wouldn’t put all your eggs in one basket, CICSwise, would you?
A naive reading of the CICS TS 5.1 announcement materials might lead you to suppose you could .
This post is about thinking about your CICS region portfolio in the light of this announcement. While every CICS release introduces capabilities that makes it worthwhile to review your region portfolio,
5.1 majors on... [More]
Tags:
smf
smf110
db2
smf30
mq
cics
smf42-6
|
As you will’ve seen in
WLM Response Time Distribution Reporting With RMF I’ve been thinking about WLM Response Time goals quite a bit recently.
And this post continues the train of thought. It’s very easy to think of WLM Service Classes as being self contained.
For many that’s true - and only their own performance numbers need to be considered for us to understand their... [More]
Tags:
omvs
was
mq
ims
db2
ddf
rmf
smf30
cics
smf72–3
smf
smf101
wlm
|
It's been almost four years since I wrote DB2 Data Sharing and XCF Job Name .
It mostly stands the test of time but there are a couple of things I want to bring up. I was in the DB2 Development lab a couple of days ago, talking with a couple of developer friends about DB2 Data Sharing and XCF.
They know DB2 Data Sharing and IRLM much better than I do but XCF not so much.
(It's probable that XCF... [More]
Tags:
rmf
cpu
smf30
irlm
smf
xcf
db2
|
I seem to be obsessed with finding patterns in data, don't I?
And, to my mind, I'm insufficiently obsessed to bring it all to a thunderous conclusion. Pardon the self-flagellation here: This stuff is technically difficult.
But just yesterday I think I made a breakthrough.
I think it's worth sharing it with you.
But first some motivation and some prerequisite knowledge. Motivation In one of my... [More]
Tags:
mpr
php
regular
expressions
smf30
regexps
ims
|
Once in a while there comes along a simple coding enhancement that really kicks the story forwards.
This post is about just such a simple thing, as I think customer Performance people would benefit from it. Consider the following perfectly ordinary graph heading (and ignore the grottiness of the font if you can). I'd like to draw your attention to the portion if it in the brown box.
That's the... [More]
Tags:
space
address
smf30
graphing
service
data
wlm
class
|
Hackday X was good clean fun yesterday - though I think it deserves more than one kiss. Seriously, for once I think I have a hack that actually worked - at least up to a point. I called my entry "z/OS Batch Analytics Baby Steps" and I think that's about right.
My purpose in taking part in successive Hackdays has been more to participate rather than to win any prizes, and to wave the flag a little... [More]
Tags:
smf
gantt
batch
hackday
z/os
hackdayx
analytics
smf30
|
Round about now you'd be expecting posts to be geared towards the recent zEC12 announcement, or perhaps CICS TS 5.1 or the DB2 11 Preview, or IDAA V3.
So what this post is about will probably have slipped by unnoticed.
After all you don't spend all your time looking for obscure New Function APARs, do you? But I think some of you will find this one of value, or at least quite interesting. (I... [More]
Tags:
smf
db2
smf30
tcb
mq
qr
zec12
ukcmg
qrtcb
cics
|
This was originally going to be a different post about VSAM's SMF
64 record, based on a customer situation. But it's morphed into
something else: A round up of "recent" enhancements to the SMF 64
record. "Recent"
is a nice euphemism: Some of these enhancements are 15 years old. But let's start the story at (or at any rate nearer to) the beginning... Back
in the early... [More]
Tags:
batchlsr
vsam
smf62
ca-reclaim
ca
smf
system-managed-buffering
smb
ci
smf64
smf30
blsr
lsr
|
I've written extensively in the past about what you can glean about batch suites from SMF, most notably SMF Type 30. While I don't believe SMF alone can give you the full dependency network (complete with validation) I've just added some analysis to my code that gets me a little closer. As you're probably never going to run my code the bit that would be interesting is the kind of inferences it's... [More]
Tags:
dependency
smf
smf62
vsam
non-vsam
batch
smf30
smf14
smf64
smf15
db2
|
This post is about unusual ways of using the SMF 30 Usage Data information, some of which you're certain to want if you're managing z/OS systems' performance. A long time ago I noticed character strings in SMF 30 records that looked like product names. (As is my wont I was looking at the raw Type 30 records for a different purpose and spotted them.) Some time later I figured out these were Usage... [More]
Tags:
cics
mq
ims
usage
db2
smf30
z/os
was
chargeback
smf
websphere
|
I can tell when a CICS region came up - without looking at CICS-specific instrumentation. What's more I can repeat the "trick" for any of MQ, DB2, IMS, etc - and so can you . I've just started work on a new piece of reporting. I'll call it "raddrspc" as that's the name of the REXX EXEC that I'm writing. It's about address spaces - most notably long-running ones. In the... [More]
Tags:
db2
uptime
addressspace
job
dossier
interval
cics
mq
smf30
ims
smf
|
As previously discussed I'm often in a situation of trying to make sense of a set of job-related SMF data. Even though it may be your own installation's data, you're probably confronted with what I like to call “a journey of discovery” occasionally, too. I'm always looking for what I can discern from the data. 1 And, when confronted with a set of data about batch jobs, I go into overdrive. This... [More]
Tags:
smf
db2
smf101
smf30
clones
batch
|
You'd think it would be pretty simple to draw a line. Right? This post discusses an enhancement I'd like to make to my current reporting - and I'm pretty sure that technically I can do it. The question is whether I should . Consider my current "Memory by address space within Service Class" graph. Here's a sample: And here's what I think I might like it to look like: Obviously the line's... [More]
Tags:
memory
cics
smf72
cpu
smf30
rmf
smf
mxg
interval
slr
smf72-3
gddm
excp
db2
rexx
|
20
0
X
