Re: Java memory limit
Please note the 31-bit Java variant offers something less than 2 GB of memory per Java Virtual Machine to programs. The 64-bit release is required if you want more. - - - - - - - - - - Timothy Sipples I.T. Architect Executive Digital Asset & Other Industry Solutions IBM Z & LinuxONE - - - - - - - - - - E-Mail: sipp...@sg.ibm.com -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Java memory limit
I am trying to under if java memory utilisation hits the general CPU or zIIP ? Does the memory capping of java is determined by java version or zOS hardware or the product which uses it ? On Fri, 17 Jul, 2020, 8:46 pm Lizette Koehler, wrote: > I think the answer is it depends. > > How much memory is available - as I recall JAVA can take it all > > In OMVS - Ua -limit > > core file 8192b > cpu time 85835 > data size unlimited > file size unlimited > stack size unlimited > file descriptors 64000 > address space 1657832k > memory above bar 2048m > > > from MVS Console - D OMVS,LIMIT > > OMVS 0011 ACTIVE OMVS=(00) > SYSTEM WIDE LIMITS: LIMMSG=NONE > CURRENT HIGHWATER SYSTEM > USAGE USAGE LIMIT > MAXPROCSYS 200 259 2100 > MAXUIDS 26 31 500 > MAXPTYS 0 1 800 > MAXMMAPAREA 8428 8428 40960 > MAXSHAREPAGES 47918 254576 32768000 > IPCMSGNIDS 17 20 500 > IPCSEMNIDS 11 21 2000 > IPCSHMNIDS 3 6 500 > IPCSHMSPAGES 0 26 786432 > IPCMSGQBYTES --- 7812 2147483647 > IPCMSGQMNUM --- 2 1 > IPCSHMMPAGES --- 256 12800 > SHRLIBRGNSIZE 49056 49056 444596224 > SHRLIBMAXPAGES 0 0 65536 > MAXUSERMOUNTSYS 0 0 0 > MAXUSERMOUNTUSER 0 0 0 > MAXPIPES 59 170 15360 > > > So depending on how many processes you are going to run, what type of code > - simple or complex > > JAVA could take as much as you can give it > > Do you have a specific issue you are trying to resolve? > > Lizette > > > -Original Message----- > From: IBM Mainframe Discussion List On Behalf > Of Peter > Sent: Friday, July 17, 2020 9:30 AM > To: IBM-MAIN@LISTSERV.UA.EDU > Subject: Java memory limit > > Hello > > We are running IBM RDZ on zOS 2.3 with java 6. What's the maximum memory > limit for java ? Is it based on Java version or zOS version ? > > Peter > > -- > For IBM-MAIN subscribe / signoff / archive access instructions, send email > to mailto:lists...@listserv.ua.edu with the message: INFO IBM-MAIN > > -- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Java memory limit
IIRC, Z/OS address space constraints may come into play: MEMLIMIT, in JCL, or system via SMFPRMXX “is the limit on the use of virtual storage above 2 gigabytes for a single address space“ Your site’s SMF exits, IEFUSI and the like, can (silently) muck things up. Ken On Fri, Jul 17, 2020at 12:59 PM Lizette Koehler wrote: > Fixed formatting > > > > D OMVS,LIMIT > > > > OMVS 0011 ACTIVE OMVS=(00) > > SYSTEM WIDE LIMITS: LIMMSG=NONE > > CURRENT HIGHWATER SYSTEM > > USAGE USAGE LIMIT > > MAXPROCSYS 200 259 2100 > > MAXUIDS 26 31 500 > > MAXPTYS 0 1 800 > > MAXMMAPAREA 8428 8428 40960 > > MAXSHAREPAGES 47918 254576 32768000 > > IPCMSGNIDS 17 20 500 > > IPCSEMNIDS 11 21 2000 > > IPCSHMNIDS 3 6 500 > > IPCSHMSPAGES 0 26 786432 > > IPCMSGQBYTES --- 7812 2147483647 > > IPCMSGQMNUM --- 2 1 > > IPCSHMMPAGES --- 256 12800 > > SHRLIBRGNSIZE 49056 49056 444596224 > > SHRLIBMAXPAGES 0 0 65536 > > MAXUSERMOUNTSYS 0 0 0 > > MAXUSERMOUNTUSER 0 0 0 > > MAXPIPES 59 170 15360 > > > > Lizette > > > > > > -Original Message- > From: Lizette Koehler > Sent: Friday, July 17, 2020 9:46 AM > To: 'IBM Mainframe Discussion List' > Subject: RE: Java memory limit > > > > I think the answer is it depends. > > > > How much memory is available - as I recall JAVA can take it all > > > > In OMVS - Ua -limit > > > > core file 8192b > > cpu time 85835 > > data size unlimited > > file size unlimited > > stack size unlimited > > file descriptors 64000 > > address space 1657832k > > memory above bar 2048m > > > > > > from MVS Console - D OMVS,LIMIT > > > > OMVS 0011 ACTIVE OMVS=(00) > > SYSTEM WIDE LIMITS: LIMMSG=NONE > > CURRENT HIGHWATER SYSTEM > > USAGE USAGE LIMIT > > MAXPROCSYS 200 259 2100 > > MAXUIDS 26 31 500 > > MAXPTYS 0 1 800 > > MAXMMAPAREA 8428 8428 40960 > > MAXSHAREPAGES 47918 254576 32768000 > > IPCMSGNIDS 17 20 500 > > IPCSEMNIDS 11 21 2000 > > IPCSHMNIDS 3 6 500 > > IPCSHMSPAGES 0 26 786432 > > IPCMSGQBYTES --- 7812 2147483647 > > IPCMSGQMNUM --- 2 1 > > IPCSHMMPAGES --- 256 12800 > > SHRLIBRGNSIZE 49056 49056 444596224 SHRLIBMAXPAGES 0 0 65536 > MAXUSERMOUNTSYS 0 0 0 MAXUSERMOUNTUSER 0 0 0 MAXPIPES 59 170 15360 > > > > > > So depending on how many processes you are going to run, what type of code > - simple or complex > > > > JAVA could take as much as you can give it > > > > Do you have a specific issue you are trying to resolve? > > > > Lizette > > > > > > -Original Message- > > From: IBM Mainframe Discussion List < <mailto:IBM-MAIN@LISTSERV.UA.EDU> > IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Peter > > Sent: Friday, July 17, 2020 9:30 AM > > To: <mailto:IBM-MAIN@LISTSERV.UA.EDU> IBM-MAIN@LISTSERV.UA.EDU > > Subject: Java memory limit > > > > Hello > > > > We are running IBM RDZ on zOS 2.3 with java 6. What's the maximum memory > limit for java ? Is it based on Java version or zOS version ? > > > > Peter > > > > -- > > For IBM-MAIN subscribe / signoff / archive access instructions, send email > to <mailto:lists...@listserv.ua.edu> mailto:lists...@listserv.ua.edu > with the message: INFO IBM-MAIN > > > -- > For IBM-MAIN subscribe / signoff / archive access instructions, > send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN > -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: EXTERNAL EMAIL: Re: Java memory limit
The formatting didn’t come out right Each export starts a new line export IBM_JAVA_OPTIONS=-Xms8m export IBM_JAVA_OPTIONS="-Xmx96m "$IBM_JAVA_OPTIONS export IJO=-Xms8m export IJO="-Xmx96m "$IJO" Jerry Whitteridge jerry.whitteri...@albertsons.com Manager Mainframe Systems & HP Non-Stop Albertsons Companies -Original Message- From: IBM Mainframe Discussion List On Behalf Of Jerry Whitteridge Sent: Friday, July 17, 2020 10:08 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Re: EXTERNAL EMAIL: Re: Java memory limit You may want to look at your Java memory settings and defaults. For example in my .profile for OMVS I have the following statements export IBM_JAVA_OPTIONS=-Xms8m export IBM_JAVA_OPTIONS="-Xmx96m "$IBM_JAVA_OPTIONS export IJO=-Xms8m export IJO="-Xmx96m "$IJO Jerry Whitteridge jerry.whitteri...@albertsons.com Manager Mainframe Systems & HP Non-Stop Albertsons Companies -Original Message- From: IBM Mainframe Discussion List On Behalf Of Lizette Koehler Sent: Friday, July 17, 2020 9:59 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: EXTERNAL EMAIL: Re: Java memory limit Fixed formatting D OMVS,LIMIT OMVS 0011 ACTIVE OMVS=(00) SYSTEM WIDE LIMITS: LIMMSG=NONE CURRENT HIGHWATER SYSTEM USAGE USAGE LIMIT MAXPROCSYS 200 259 2100 MAXUIDS 26 31 500 MAXPTYS 0 1 800 MAXMMAPAREA 8428 8428 40960 MAXSHAREPAGES 47918 254576 32768000 IPCMSGNIDS 17 20 500 IPCSEMNIDS 11 21 2000 IPCSHMNIDS 3 6 500 IPCSHMSPAGES 0 26 786432 IPCMSGQBYTES --- 7812 2147483647 IPCMSGQMNUM --- 2 1 IPCSHMMPAGES --- 256 12800 SHRLIBRGNSIZE 49056 49056 444596224 SHRLIBMAXPAGES 0 0 65536 MAXUSERMOUNTSYS 0 0 0 MAXUSERMOUNTUSER 0 0 0 MAXPIPES 59 170 15360 Lizette -Original Message- From: Lizette Koehler Sent: Friday, July 17, 2020 9:46 AM To: 'IBM Mainframe Discussion List' Subject: RE: Java memory limit I think the answer is it depends. How much memory is available - as I recall JAVA can take it all In OMVS - Ua -limit core file 8192b cpu time 85835 data size unlimited file size unlimited stack size unlimited file descriptors 64000 address space 1657832k memory above bar 2048m from MVS Console - D OMVS,LIMIT OMVS 0011 ACTIVE OMVS=(00) SYSTEM WIDE LIMITS: LIMMSG=NONE CURRENT HIGHWATER SYSTEM USAGE USAGE LIMIT MAXPROCSYS 200 259 2100 MAXUIDS 26 31 500 MAXPTYS 0 1 800 MAXMMAPAREA 8428 8428 40960 MAXSHAREPAGES 47918 254576 32768000 IPCMSGNIDS 17 20 500 IPCSEMNIDS 11 21 2000 IPCSHMNIDS 3 6 500 IPCSHMSPAGES 0 26 786432 IPCMSGQBYTES --- 7812 2147483647 IPCMSGQMNUM --- 2 1 IPCSHMMPAGES --- 256 12800 SHRLIBRGNSIZE 49056 49056 444596224 SHRLIBMAXPAGES 0 0 65536 MAXUSERMOUNTSYS 0 0 0 MAXUSERMOUNTUSER 0 0 0 MAXPIPES 59 170 15360 So depending on how many processes you are going to run, what type of code - simple or complex JAVA could take as much as you can give it Do you have a specific issue you are trying to resolve? Lizette -Original Message- From: IBM Mainframe Discussion List < <mailto:IBM-MAIN@LISTSERV.UA.EDU> IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Peter Sent: Friday, July 17, 2020 9:30 AM To: <mailto:IBM-MAIN@LISTSERV.UA.EDU> IBM-MAIN@LISTSERV.UA.EDU Subject: Java memory limit Hello We are running IBM RDZ on zOS 2.3 with java 6. What's the maximum memory limit for java ? Is it based on Java version or zOS version ? Peter -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to <mailto:lists...@listserv.ua.edu> mailto:lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Warning: All e-mail sent to this address will be received by the corporate e-mail system, and is subject to archival and review by someone other than the recipient. This e-mail may contain proprietary information and is intended only for the use of the intended recipient(s). If the reader of this message is not the intended recipient(s), you are notified that you have received this message in error and that any review, dissemination, distribution or copying of this message is strictly prohibited. If you have received this message in error, please notify the sender immediately. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Warning: All e-mail sent to this address will be received by the corporate e-mail system, and is subject to archival and review by someo
Re: EXTERNAL EMAIL: Re: Java memory limit
You may want to look at your Java memory settings and defaults. For example in my .profile for OMVS I have the following statements export IBM_JAVA_OPTIONS=-Xms8m export IBM_JAVA_OPTIONS="-Xmx96m "$IBM_JAVA_OPTIONS export IJO=-Xms8m export IJO="-Xmx96m "$IJO Jerry Whitteridge jerry.whitteri...@albertsons.com Manager Mainframe Systems & HP Non-Stop Albertsons Companies -Original Message- From: IBM Mainframe Discussion List On Behalf Of Lizette Koehler Sent: Friday, July 17, 2020 9:59 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: EXTERNAL EMAIL: Re: Java memory limit Fixed formatting D OMVS,LIMIT OMVS 0011 ACTIVE OMVS=(00) SYSTEM WIDE LIMITS: LIMMSG=NONE CURRENT HIGHWATER SYSTEM USAGE USAGE LIMIT MAXPROCSYS 200 259 2100 MAXUIDS 26 31 500 MAXPTYS 0 1 800 MAXMMAPAREA 8428 8428 40960 MAXSHAREPAGES 47918 254576 32768000 IPCMSGNIDS 17 20 500 IPCSEMNIDS 11 21 2000 IPCSHMNIDS 3 6 500 IPCSHMSPAGES 0 26 786432 IPCMSGQBYTES --- 7812 2147483647 IPCMSGQMNUM --- 2 1 IPCSHMMPAGES --- 256 12800 SHRLIBRGNSIZE 49056 49056 444596224 SHRLIBMAXPAGES 0 0 65536 MAXUSERMOUNTSYS 0 0 0 MAXUSERMOUNTUSER 0 0 0 MAXPIPES 59 170 15360 Lizette -Original Message- From: Lizette Koehler Sent: Friday, July 17, 2020 9:46 AM To: 'IBM Mainframe Discussion List' Subject: RE: Java memory limit I think the answer is it depends. How much memory is available - as I recall JAVA can take it all In OMVS - Ua -limit core file 8192b cpu time 85835 data size unlimited file size unlimited stack size unlimited file descriptors 64000 address space 1657832k memory above bar 2048m from MVS Console - D OMVS,LIMIT OMVS 0011 ACTIVE OMVS=(00) SYSTEM WIDE LIMITS: LIMMSG=NONE CURRENT HIGHWATER SYSTEM USAGE USAGE LIMIT MAXPROCSYS 200 259 2100 MAXUIDS 26 31 500 MAXPTYS 0 1 800 MAXMMAPAREA 8428 8428 40960 MAXSHAREPAGES 47918 254576 32768000 IPCMSGNIDS 17 20 500 IPCSEMNIDS 11 21 2000 IPCSHMNIDS 3 6 500 IPCSHMSPAGES 0 26 786432 IPCMSGQBYTES --- 7812 2147483647 IPCMSGQMNUM --- 2 1 IPCSHMMPAGES --- 256 12800 SHRLIBRGNSIZE 49056 49056 444596224 SHRLIBMAXPAGES 0 0 65536 MAXUSERMOUNTSYS 0 0 0 MAXUSERMOUNTUSER 0 0 0 MAXPIPES 59 170 15360 So depending on how many processes you are going to run, what type of code - simple or complex JAVA could take as much as you can give it Do you have a specific issue you are trying to resolve? Lizette -Original Message- From: IBM Mainframe Discussion List < <mailto:IBM-MAIN@LISTSERV.UA.EDU> IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Peter Sent: Friday, July 17, 2020 9:30 AM To: <mailto:IBM-MAIN@LISTSERV.UA.EDU> IBM-MAIN@LISTSERV.UA.EDU Subject: Java memory limit Hello We are running IBM RDZ on zOS 2.3 with java 6. What's the maximum memory limit for java ? Is it based on Java version or zOS version ? Peter -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to <mailto:lists...@listserv.ua.edu> mailto:lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN Warning: All e-mail sent to this address will be received by the corporate e-mail system, and is subject to archival and review by someone other than the recipient. This e-mail may contain proprietary information and is intended only for the use of the intended recipient(s). If the reader of this message is not the intended recipient(s), you are notified that you have received this message in error and that any review, dissemination, distribution or copying of this message is strictly prohibited. If you have received this message in error, please notify the sender immediately. -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Java memory limit
Fixed formatting D OMVS,LIMIT OMVS 0011 ACTIVE OMVS=(00) SYSTEM WIDE LIMITS: LIMMSG=NONE CURRENT HIGHWATER SYSTEM USAGE USAGE LIMIT MAXPROCSYS 200 259 2100 MAXUIDS 26 31 500 MAXPTYS 0 1 800 MAXMMAPAREA 8428 8428 40960 MAXSHAREPAGES 47918 254576 32768000 IPCMSGNIDS 17 20 500 IPCSEMNIDS 11 21 2000 IPCSHMNIDS 3 6 500 IPCSHMSPAGES 0 26 786432 IPCMSGQBYTES --- 7812 2147483647 IPCMSGQMNUM --- 2 1 IPCSHMMPAGES --- 256 12800 SHRLIBRGNSIZE 49056 49056 444596224 SHRLIBMAXPAGES 0 0 65536 MAXUSERMOUNTSYS 0 0 0 MAXUSERMOUNTUSER 0 0 0 MAXPIPES 59 170 15360 Lizette -Original Message- From: Lizette Koehler Sent: Friday, July 17, 2020 9:46 AM To: 'IBM Mainframe Discussion List' Subject: RE: Java memory limit I think the answer is it depends. How much memory is available - as I recall JAVA can take it all In OMVS - Ua -limit core file 8192b cpu time 85835 data size unlimited file size unlimited stack size unlimited file descriptors 64000 address space 1657832k memory above bar 2048m from MVS Console - D OMVS,LIMIT OMVS 0011 ACTIVE OMVS=(00) SYSTEM WIDE LIMITS: LIMMSG=NONE CURRENT HIGHWATER SYSTEM USAGE USAGE LIMIT MAXPROCSYS 200 259 2100 MAXUIDS 26 31 500 MAXPTYS 0 1 800 MAXMMAPAREA 8428 8428 40960 MAXSHAREPAGES 47918 254576 32768000 IPCMSGNIDS 17 20 500 IPCSEMNIDS 11 21 2000 IPCSHMNIDS 3 6 500 IPCSHMSPAGES 0 26 786432 IPCMSGQBYTES --- 7812 2147483647 IPCMSGQMNUM --- 2 1 IPCSHMMPAGES --- 256 12800 SHRLIBRGNSIZE 49056 49056 444596224 SHRLIBMAXPAGES 0 0 65536 MAXUSERMOUNTSYS 0 0 0 MAXUSERMOUNTUSER 0 0 0 MAXPIPES 59 170 15360 So depending on how many processes you are going to run, what type of code - simple or complex JAVA could take as much as you can give it Do you have a specific issue you are trying to resolve? Lizette -Original Message- From: IBM Mainframe Discussion List < <mailto:IBM-MAIN@LISTSERV.UA.EDU> IBM-MAIN@LISTSERV.UA.EDU> On Behalf Of Peter Sent: Friday, July 17, 2020 9:30 AM To: <mailto:IBM-MAIN@LISTSERV.UA.EDU> IBM-MAIN@LISTSERV.UA.EDU Subject: Java memory limit Hello We are running IBM RDZ on zOS 2.3 with java 6. What's the maximum memory limit for java ? Is it based on Java version or zOS version ? Peter -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to <mailto:lists...@listserv.ua.edu> mailto:lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Re: Java memory limit
I think the answer is it depends. How much memory is available - as I recall JAVA can take it all In OMVS - Ua -limit core file 8192b cpu time 85835 data size unlimited file size unlimited stack size unlimited file descriptors 64000 address space 1657832k memory above bar 2048m from MVS Console - D OMVS,LIMIT OMVS 0011 ACTIVE OMVS=(00) SYSTEM WIDE LIMITS: LIMMSG=NONE CURRENT HIGHWATER SYSTEM USAGE USAGE LIMIT MAXPROCSYS 200 259 2100 MAXUIDS 26 31 500 MAXPTYS 0 1 800 MAXMMAPAREA 8428 8428 40960 MAXSHAREPAGES 47918 254576 32768000 IPCMSGNIDS 17 20 500 IPCSEMNIDS 11 21 2000 IPCSHMNIDS 3 6 500 IPCSHMSPAGES 0 26 786432 IPCMSGQBYTES --- 7812 2147483647 IPCMSGQMNUM --- 2 1 IPCSHMMPAGES --- 256 12800 SHRLIBRGNSIZE 49056 49056 444596224 SHRLIBMAXPAGES 0 0 65536 MAXUSERMOUNTSYS 0 0 0 MAXUSERMOUNTUSER 0 0 0 MAXPIPES 59 170 15360 So depending on how many processes you are going to run, what type of code - simple or complex JAVA could take as much as you can give it Do you have a specific issue you are trying to resolve? Lizette -Original Message- From: IBM Mainframe Discussion List On Behalf Of Peter Sent: Friday, July 17, 2020 9:30 AM To: IBM-MAIN@LISTSERV.UA.EDU Subject: Java memory limit Hello We are running IBM RDZ on zOS 2.3 with java 6. What's the maximum memory limit for java ? Is it based on Java version or zOS version ? Peter -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to mailto:lists...@listserv.ua.edu with the message: INFO IBM-MAIN -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
Java memory limit
Hello We are running IBM RDZ on zOS 2.3 with java 6. What's the maximum memory limit for java ? Is it based on Java version or zOS version ? Peter -- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@listserv.ua.edu with the message: INFO IBM-MAIN
