Re: Buffer pool storage
Denis,
I'm sorry but I don't quite understand. When you refer to "...delay the
number of swap in pageset.", are you talking about log switches, or
contention for bufferspace when messages are read from a queue?
"Blondiaux Denis
(DBB)" To: [EMAIL PROTECTED]
Subject: Re: Buffer pool storage
Sent by:
MQSeries List
<[EMAIL PROTECTED]
en.AC.AT>
05/12/2004 03:13
AM
Please respond
to MQSeries List
Rick,
It concern a qmgr with a lot of pagesets and a lot of queues.
We increase size of buffer pool for delay the number of swap in pageset.
(the original reason of this intervention is some hardware problem on
random space volumes).
But you have right, this large size is not really required.
After increasing the size of the bufferpools (we reach than at least 1,5
Gb), applications using the qmgr began to have security access problem
(Abend 878-00C DURING RACINIT PROCESSING - There is not enough virtual
local system queue area (LSQA)).
After investigation, we see that there is a lot of multiple getmain without
freemain in extended private area. So the conclusion was that these getmain
overide the memory where was cached the RACF informations.
The global conclusion was that we have to consider that the total size of
bufferpool can not reached more than 1,5gb, otherwise, you can expect this
kind of problem. We don't find any recommendation from IBM about this
before.
Posted here for information...
-Original Message-
From: MQSeries List [mailto:[EMAIL PROTECTED] Behalf Of Rick
Tsujimoto
Sent: mardi 11 mai 2004 17:09
To: [EMAIL PROTECTED]
Subject: Re: Buffer pool storage
Denis,
Out of curiosity, why are you using so much bufferpool space, and not
letting most of the data flow to disk?
"Blondiaux Denis
(DBB)" To:
[EMAIL PROTECTED]
Subject: Re: Buffer pool
storage
Sent by:
MQSeries List
<[EMAIL PROTECTED]
en.AC.AT>
05/11/2004 01:22
AM
Please respond
to MQSeries List
Hi,
About this point, does anyone know if IBM has planned to implement
bufferpool in dataspace, like in DB2 ?
A few month ago, we had memory problem after increasing bufferpool because
we already take at least 1,6Gb in extended private area.
Denis
-Original Message-
From: MQSeries List [mailto:[EMAIL PROTECTED] Behalf Of John M
Hammond
Sent: mardi 11 mai 2004 6:35
To: [EMAIL PROTECTED]
Subject: Re: Buffer pool storage
Yes, it's in the MSTR and it's above the line private storage. There
should be plenty of that to go around :)
John M Hammond
Data Center - Middleware
(630) 521-4339
Ronald Weinger
<[EMAIL PROTECTED] To:
[EMAIL PROTECTED]
> cc:
Sent by: MQSeries Subject: Buffer pool
storage
List
<[EMAIL PROTECTED]
.AT>
05/10/2004 09:45 AM
Please respond to
MQSeries List
Does anyone know where in z/OS the bufferpool storage is allocated? Is is
within the MQ Master address space?
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Re: Buffer pool storage
Rick,
It concern a qmgr with a lot of pagesets and a lot of queues.
We increase size of buffer pool for delay the number of swap in pageset.
(the original reason of this intervention is some hardware problem on random space
volumes).
But you have right, this large size is not really required.
After increasing the size of the bufferpools (we reach than at least 1,5Gb),
applications using the qmgr began to have security access problem (Abend 878-00C
DURING RACINIT PROCESSING - There is not enough virtual local system queue area
(LSQA)).
After investigation, we see that there is a lot of multiple getmain without freemain
in extended private area. So the conclusion was that these getmain overide the memory
where was cached the RACF informations.
The global conclusion was that we have to consider that the total size of bufferpool
can not reached more than 1,5gb, otherwise, you can expect this kind of problem. We
don't find any recommendation from IBM about this before.
Posted here for information...
-Original Message-
From: MQSeries List [mailto:[EMAIL PROTECTED] Behalf Of Rick
Tsujimoto
Sent: mardi 11 mai 2004 17:09
To: [EMAIL PROTECTED]
Subject: Re: Buffer pool storage
Denis,
Out of curiosity, why are you using so much bufferpool space, and not
letting most of the data flow to disk?
"Blondiaux Denis
(DBB)" To: [EMAIL PROTECTED]
Subject: Re: Buffer pool storage
Sent by:
MQSeries List
<[EMAIL PROTECTED]
en.AC.AT>
05/11/2004 01:22
AM
Please respond
to MQSeries List
Hi,
About this point, does anyone know if IBM has planned to implement
bufferpool in dataspace, like in DB2 ?
A few month ago, we had memory problem after increasing bufferpool because
we already take at least 1,6Gb in extended private area.
Denis
-Original Message-
From: MQSeries List [mailto:[EMAIL PROTECTED] Behalf Of John M
Hammond
Sent: mardi 11 mai 2004 6:35
To: [EMAIL PROTECTED]
Subject: Re: Buffer pool storage
Yes, it's in the MSTR and it's above the line private storage. There
should be plenty of that to go around :)
John M Hammond
Data Center - Middleware
(630) 521-4339
Ronald Weinger
<[EMAIL PROTECTED] To:
[EMAIL PROTECTED]
> cc:
Sent by: MQSeries Subject: Buffer pool
storage
List
<[EMAIL PROTECTED]
.AT>
05/10/2004 09:45 AM
Please respond to
MQSeries List
Does anyone know where in z/OS the bufferpool storage is allocated? Is is
within the MQ Master address space?
The information contained in this message may be CONFIDENTIAL and is for
the intended addressee only. Any unauthorized use, dissemination of the
information, or copying of this message is prohibited. If you are not the
intended addressee, please notify the sender immediately and delete this
message.
Instructions for managing your mailing list subscription are provided in
the Listserv General Users Guide available at http://www.lsoft.com
Archive: http://vm.akh-wien.ac.at/MQSeries.archive
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Re: Buffer pool storage
Denis, Out of curiosity, why are you using so much bufferpool space, and not letting most of the data flow to disk? "Blondiaux Denis (DBB)" To: [EMAIL PROTECTED] Subject: Re: Buffer pool storage Sent by: MQSeries List <[EMAIL PROTECTED] en.AC.AT> 05/11/2004 01:22 AM Please respond to MQSeries List Hi, About this point, does anyone know if IBM has planned to implement bufferpool in dataspace, like in DB2 ? A few month ago, we had memory problem after increasing bufferpool because we already take at least 1,6Gb in extended private area. Denis -Original Message- From: MQSeries List [mailto:[EMAIL PROTECTED] Behalf Of John M Hammond Sent: mardi 11 mai 2004 6:35 To: [EMAIL PROTECTED] Subject: Re: Buffer pool storage Yes, it's in the MSTR and it's above the line private storage. There should be plenty of that to go around :) John M Hammond Data Center - Middleware (630) 521-4339 Ronald Weinger <[EMAIL PROTECTED] To: [EMAIL PROTECTED] > cc: Sent by: MQSeries Subject: Buffer pool storage List <[EMAIL PROTECTED] .AT> 05/10/2004 09:45 AM Please respond to MQSeries List Does anyone know where in z/OS the bufferpool storage is allocated? Is is within the MQ Master address space? The information contained in this message may be CONFIDENTIAL and is for the intended addressee only. Any unauthorized use, dissemination of the information, or copying of this message is prohibited. If you are not the intended addressee, please notify the sender immediately and delete this message. Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive -- Dexia Bank disclaimer : http://www.dexia.be/maildisclaimer.htm -- Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
Re: Buffer pool storage
Hi, About this point, does anyone know if IBM has planned to implement bufferpool in dataspace, like in DB2 ? A few month ago, we had memory problem after increasing bufferpool because we already take at least 1,6Gb in extended private area. Denis -Original Message- From: MQSeries List [mailto:[EMAIL PROTECTED] Behalf Of John M Hammond Sent: mardi 11 mai 2004 6:35 To: [EMAIL PROTECTED] Subject: Re: Buffer pool storage Yes, it's in the MSTR and it's above the line private storage. There should be plenty of that to go around :) John M Hammond Data Center - Middleware (630) 521-4339 Ronald Weinger <[EMAIL PROTECTED] To:[EMAIL PROTECTED] > cc: Sent by: MQSeries Subject: Buffer pool storage List <[EMAIL PROTECTED] .AT> 05/10/2004 09:45 AM Please respond to MQSeries List Does anyone know where in z/OS the bufferpool storage is allocated? Is is within the MQ Master address space? The information contained in this message may be CONFIDENTIAL and is for the intended addressee only. Any unauthorized use, dissemination of the information, or copying of this message is prohibited. If you are not the intended addressee, please notify the sender immediately and delete this message. Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive -- Dexia Bank disclaimer : http://www.dexia.be/maildisclaimer.htm -- Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
Re: Buffer pool storage
Yes, it's in the MSTR and it's above the line private storage. There should be plenty of that to go around :) John M Hammond Data Center - Middleware (630) 521-4339 Ronald Weinger <[EMAIL PROTECTED] To:[EMAIL PROTECTED] > cc: Sent by: MQSeries Subject: Buffer pool storage List <[EMAIL PROTECTED] .AT> 05/10/2004 09:45 AM Please respond to MQSeries List Does anyone know where in z/OS the bufferpool storage is allocated? Is is within the MQ Master address space? The information contained in this message may be CONFIDENTIAL and is for the intended addressee only. Any unauthorized use, dissemination of the information, or copying of this message is prohibited. If you are not the intended addressee, please notify the sender immediately and delete this message. Instructions for managing your mailing list subscription are provided in the Listserv General Users Guide available at http://www.lsoft.com Archive: http://vm.akh-wien.ac.at/MQSeries.archive
Buffer pool storage
Does anyone know where in z/OS the bufferpool storage is allocated? Is is within the MQ Master address space? The information contained in this message may be CONFIDENTIAL and is for the intended addressee only. Any unauthorized use, dissemination of the information, or copying of this message is prohibited. If you are not the intended addressee, please notify the sender immediately and delete this message.
