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тАО07-07-2009 10:37 PM
тАО07-07-2009 10:37 PM
How many Share memory can bu used by 32 bit application in IA64
I have one 32-bit application install IA 64 11.23, now i want to know home many share memory can be used by application
2 REPLIES 2
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тАО07-07-2009 11:05 PM
тАО07-07-2009 11:05 PM
Re: How many Share memory can bu used by 32 bit application in IA64
you mean how many shared memory segments?
that would be goverened by the kernel parameter shmseg
You can check what it is currently set to using:
kctune shmseg
HTH
Duncan
I am an HPE Employee
that would be goverened by the kernel parameter shmseg
You can check what it is currently set to using:
kctune shmseg
HTH
Duncan
I am an HPE Employee
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тАО07-08-2009 12:01 AM
тАО07-08-2009 12:01 AM
Re: How many Share memory can bu used by 32 bit application in IA64
Shalom,
I think you mean how much shared memory can your 32 bit application use.
kctune -l | grep shmmax
That is your current setting.
On page 234 of HP-UUX tuning and performance, the authors robert f sauers chris p eummler and peter s weygant indicate the maximum memory mapped file size is 1 GB.
The combined total for shared mapped files, all shared memory and all shared libraries without shared memory windows is 1.75 GB.
This is probably the hard limit for shmmax total on a 32 bit application.
On page 212 of the same book, the authors indicate the maximum memory available for all shared objects using SHMEM_MAGIC memory windows is 2.75 GB on PA-RISC and 3 GB on IPF.
Want more than that for a 32 bit application, you will need to store it in a file on disk or make it into a 64 bit application.
SEP
I think you mean how much shared memory can your 32 bit application use.
kctune -l | grep shmmax
That is your current setting.
On page 234 of HP-UUX tuning and performance, the authors robert f sauers chris p eummler and peter s weygant indicate the maximum memory mapped file size is 1 GB.
The combined total for shared mapped files, all shared memory and all shared libraries without shared memory windows is 1.75 GB.
This is probably the hard limit for shmmax total on a 32 bit application.
On page 212 of the same book, the authors indicate the maximum memory available for all shared objects using SHMEM_MAGIC memory windows is 2.75 GB on PA-RISC and 3 GB on IPF.
Want more than that for a 32 bit application, you will need to store it in a file on disk or make it into a 64 bit application.
SEP
Steven E Protter
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
Owner of ISN Corporation
http://isnamerica.com
http://hpuxconsulting.com
Sponsor: http://hpux.ws
Twitter: http://twitter.com/hpuxlinux
Founder http://newdatacloud.com
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