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max value for maxdsiz

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max value for maxdsiz

How to find out what is the maximum value for maxdsiz.
jp
7 REPLIES
Santosh Nair_1
Honored Contributor

Re: max value for maxdsiz

maxdsiz

default value: 0x04000000 (67108864 decimal)
max value: 0x010000000 (268435456 decimal)

On an 11.0 machine, you can use kmtune to tell you the default, present and maximum value of any kernel parameter. Just do a ktune -l.

-Santosh
Life is what's happening while you're busy making other plans
Stefan Farrelly
Honored Contributor

Re: max value for maxdsiz


On a 32-bit system you can only address 1.75GB so its pointless setting it higher than that, although you probably could. On a 64-bit system the maximum is into the hundreds of Gigabytes - or at least the size of physical RAM.
Im from Palmerston North, New Zealand, but somehow ended up in London...
James R. Ferguson
Acclaimed Contributor

Re: max value for maxdsiz

Hi:

maxdsiz for 32-bit processors:

Minimum = 0x400000 (4 Mbytes)
Maximum = 0x7B03A000 (approx 2 Gbytes)
Default = 0x4000000 (64 Mbytes)

maxdsiz_64bit for 64-bit processors:

Minimum = 0x400000 (4 Mbytes)
Maximum = 4396972769279
Default = 0x4000000 (64 Mbytes)

Regards!

...JRF...

Re: max value for maxdsiz

Hi JRF
please tell me the command to find out the maximum value of maxdsiz and maximum value for all parameters
jp
James R. Ferguson
Acclaimed Contributor
Solution

Re: max value for maxdsiz

Hi:

I think you will find this document useful:

http://docs.hp.com/hpux/onlinedocs/os/KCparams.OverviewAll.html

If you are running 10.x you can also use 'sysdef'. If you are running 11.x, then 'kmtune' is what you need. Have a look at the man pages for each.

Regards!

...JRF...

Santosh Nair_1
Honored Contributor

Re: max value for maxdsiz

Opps...sorry about the mistake...I was looking at the value that was set on our machine instead of the max value. That's what you get for trying to answer questions at 5:00 in the morning....

The various kernel parameters are listed on the HP documentation web page (docs.hp.com) as well as in the file /usr/conf/master.d/core-hpux.

-Santosh
Life is what's happening while you're busy making other plans
Sanjay_6
Honored Contributor

Re: max value for maxdsiz

Hi Jay,

Look at the thread below for the max value os "maxdsiz" you are looking for.

http://docs.hp.com//hpux/onlinedocs/os/11i/kcparams/KCparam.MaxDsiz.html

Hope this helps.

Thanks