On Fri, 14 Apr 2023 07:02:29 -0500, Jantje. wrote:
>Dear Listers,
>
>After having wade through the last 5 years worth of posts in this list where
>the word zHPF is mentioned I am now tending to my headache. And I still have
>no real answer to my questions...
>
>I
/pks/lookup?op=get=markjac...@protonmail.com
--- Original Message ---
On Monday, April 17th, 2023 at 11:31 AM, Jantje.
<033acf17e42f-dmarc-requ...@listserv.ua.edu> wrote:
> On Fri, 14 Apr 2023 14:48:28 +, Mark Jacobs markjac...@protonmail.com
> wrote:
>
> >
Q: " Does one activate zHPF one LPAR at a time or in a big bang for all LPARs
in the sysplex?"
A: An installation can do it either way, there is no requirement to activate on
all LPARs in a sysplex at once.
Q: Do I have to tell DB2 that zHPF has been activated for it to take
On Fri, 14 Apr 2023 14:48:28 +, Mark Jacobs
wrote:
>We've been using zHPF for many years, no problems. We also just recently
>enabled VTOC_USE_ZHPF in DEVSUPxx, also no problems. I'd check for any missing
>maintenance both for z/OS and DB2 that mention zHP
We've been using zHPF for many years, no problems. We also just recently
enabled VTOC_USE_ZHPF in DEVSUPxx, also no problems. I'd check for any missing
maintenance both for z/OS and DB2 that mention zHPF. FIXCAT
IBM.Function.zHighPerformanceFICON would be something to check.
Mark Jacobs
> - Do I have to tell DB2 that zHPF has been activated for it to take advantage
> of it?
I would doubt it, but of course you should consult Db2 docs. Db2 wouldn't
have "to be told" that zHPF is available because there is a macro (IOSZHPF)
that can be issued to determine
On Fri, 14 Apr 2023 13:49:38 +, Martin Packer
wrote:
>Not to answer the question but to note you can see zHPF effectiveness in SMF
>73 Channel Path Activity data.
>
Dear Martin,
Yes, I have read that. But there, the problem is that SMF73 comes after the
fact. I will have to
Not to answer the question but to note you can see zHPF effectiveness in SMF 73
Channel Path Activity data.
Cheers, Martin
From: IBM Mainframe Discussion List on behalf of
Jantje. <033acf17e42f-dmarc-requ...@listserv.ua.edu>
Date: Friday, 14 April 2023 at 13:02
To: IB
Dear Listers,
After having wade through the last 5 years worth of posts in this list where
the word zHPF is mentioned I am now tending to my headache. And I still have no
real answer to my questions...
I am all but a storage administrator, let that be clear.
- Are there any gotcha's
For zHPF, have you looked at the documentation of EXCP(VR)? That plus PoOps
should be all that you need.
For EAV, what do you need that is not in Advanced Services or Data Areas?
AFAIK, every relevant service is FMT(8|9) aware.
--
Shmuel (Seymour J.) Metz
http://mason.gmu.edu/~smetz3
While I may not aware of any documentation for extended format data sets, the
Principles of Operations manual documents zHPF, although it doesn't use the
term. Similarly, the DFSMSdfp Advanced Services manual documents EAV and zHPF
from a software perspective.
--
Shmuel (Seymour J.) Metz
http
Sean Gleann wrote:
>2. I was not specific enough in my original query. You say that zHPF
should
>work automagically with BSAM, etc. Apologies for my oversight here, but
>what we're looking for is information on creating a channel program that
>uses TCWs as opposed to CCWs (our softwa
There is a Redbook for EAV:
https://www.redbooks.ibm.com/abstracts/redp5364.html?Open
--
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
STSERV.UA.EDU] on behalf of
Timothy Sipples [sipp...@sg.ibm.com]
Sent: Tuesday, October 26, 2021 2:31 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: EAV and zHPF documentation, anyone?
Sean Gleann wrote:
>Also detailed documentation for z/HPF is evading all our searches
>(because it is a chargeable
On 10/26/2021 3:34 AM, Sean Gleann wrote:
what we're looking for is information on creating a channel program that
uses TCWs as opposed to CCWs (our software generates its own channel
programs).
Someone at IBM decided HPF IP created an opportunity to squeeze some
extra money from mainframe
Hi Timothy
Thanks for your response - it highlights two things for us
1. We were woefully ignorant about the history and current 'packaging' of
zHPF - thank you for your explanation
2. I was not specific enough in my original query. You say that zHPF should
work automagically with BSAM, etc
Sean Gleann wrote:
>Also detailed documentation for z/HPF is evading all our searches
>(because it is a chargeable extra, perhaps?)
I have a partial answer, to start
To my knowledge zHPF is no longer a separately chargeable extra, not for
several years with IBM gear. My recoll
We are trying to improve our software product by including provision for
files in cylinder-managed space on EAV disks, and with using z/HPF to
access them.
'DFSMSdpf Advanced Services' (SC23-6861) helps somewhat for FTM8/9 labels,
but it does not go far enough, we feel.
Also detailed
Subject: [EXTERNAL] Re: zHPF related links
I have sent both these docs to you. A word of caution, both are very old.
Parwez Hamid
--
For IBM-MAIN subscribe / signoff / archive access instructions, send email to
lists
I have sent both these docs to you. A word of caution, both are very old.
Parwez Hamid
--
For IBM-MAIN subscribe / signoff / archive access instructions,
send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Hello All,
These links seem to be broken now.
Can anyone share a copy of these files if they have it please..
IBM zEnterprise 196 and IBM zEnterprise 114 I/O and FICON Express8S Channel
Performance (Cathy Cronin, Version 2, November 2011) (ZSW03196USEN01)
*
[mailto:IBM-MAIN@LISTSERV.UA.EDU]
On Behalf Of gsg
Sent: Tuesday, August 27, 2013 9:02 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: [IBM-MAIN] zHPF
Is there a way to benchmark zHPF? Are there reports you can run that would
show management a nice before and after picture? Can anyone explain
exactly
Is there a way to benchmark zHPF? Are there reports you can run that would
show management a nice before and after picture? Can anyone explain exactly
what zHPF is in simple terms?
--
For IBM-MAIN subscribe / signoff
of no statistical information on zHPF processes.
Lizette
-Original Message-
From: IBM Mainframe Discussion List [mailto:IBM-MAIN@LISTSERV.UA.EDU] On Behalf
Of gsg
Sent: Tuesday, August 27, 2013 9:02 AM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: zHPF
Is there a way to benchmark zHPF? Are there reports
gsg wrote:
Is there a way to benchmark zHPF? Are there reports you can run that would
show management a nice before and after picture? Can anyone explain exactly
what zHPF is in simple terms?
For what it is, see the presentation by Lou Ricci from SHARE 116: High
Performance Ficon
-MAIN] zHPF
On 8/6/2013 12:35 PM, gsg wrote:
Would like to turn on zHPF. Is there a way to benchmark this to see what
we're getting out of it? Would like to do this in test and then again in
production.
The main advantage to zHPF is more (overlapped) I/Os per second, not faster
per-I/O
Would like to turn on zHPF. Is there a way to benchmark this to see what we're
getting out of it? Would like to do this in test and then again in production.
--
For IBM-MAIN subscribe / signoff / archive access instructions
On 8/6/2013 12:35 PM, gsg wrote:
Would like to turn on zHPF. Is there a way to benchmark this to see what we're
getting out of it? Would like to do this in test and then again in production.
The main advantage to zHPF is more (overlapped) I/Os per second, not
faster per-I/O speed
Subject: Re: zHPF
On 8/6/2013 12:35 PM, gsg wrote:
Would like to turn on zHPF. Is there a way to benchmark this to see what
we're getting out of it? Would like to do this in test and then again in
production.
The main advantage to zHPF is more (overlapped) I/Os per second, not faster
per-I/O
It will also depend on what hardware vendor you are using as to what level of
support there is for zHPF
Lizette
-Original Message-
From: Norman.Hollander norman.hollan...@desertwiz.biz
Sent: Aug 6, 2013 1:44 PM
To: IBM-MAIN@LISTSERV.UA.EDU
Subject: Re: zHPF
While the feature is part
Hi all,
I was talking with a coworker about zHPF and I want to hear your opinion
about it.
If you turned it on, did you actually measure the benefits ?
If so, did you use RMF reports or any other tool ?
TIA
Atenciosamente / Regards / Saludos
Ituriel do Nascimento Neto
BANCO BRADESCO S.A.
4254
W dniu 2012-06-22 16:47, Thomas Conley pisze:
I'd like to take a private survey to determine which sites have
enabled both MIDAW and zHPF, or if you haven't enabled either or
both, why. It's come to my attention that some sites may not have
enabled these options. In the case of MIDAW, you have
On Fri, 22 Jun 2012 09:47:32 -0500, Thomas Conley pinnc...@rochester.rr.com
wrote:
I'd like to take a private survey to determine which sites have enabled both
MIDAW and zHPF, or if you haven't enabled either or both, why. It's come to
my attention that some sites may not have enabled
33 matches
Mail list logo
