topic Re: kernel parmeter - madsiz value in Operating System - HP-UX

kernel parmeter - madsiz value

william_39 — Mon, 15 Jul 2002 10:24:44 GMT

Dear all,
i have doubt about madsiz parameter value ...
in what unit it should be , i mean in
pages/bytes ??

if i say,

maxdsiz 262144

what does it means ??

Thanks in advance
william.

Re: kernel parmeter - madsiz value

Pete Randall — Mon, 15 Jul 2002 10:43:12 GMT

William,

This is from SAM's help page on configurable kernel parameters:
Specify the maximum data segment size, in bytes, for an executing
process.
Acceptable Values:
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)

Hope this helps,
Pete

Re: kernel parmeter - madsiz value

V. V. Ravi Kumar_1 — Mon, 15 Jul 2002 11:35:49 GMT

hi,

maxdsiz 262144
indicates u are allocating a maximum of 262144 bytes data segment size for a process under execution.

regds

Re: kernel parmeter - madsiz value

william_39 — Mon, 15 Jul 2002 11:56:14 GMT

Thanks a lot,
i have got it, in /stand/system file u have to specify maxdsize parameter in bytes, where as when we say "sysdef" it shows this value in no. of pages.

Hope iam correct, if not pl. correct me.

Cheers
william.

Re: kernel parmeter - madsiz value

James R. Ferguson — Mon, 15 Jul 2002 12:12:39 GMT

Hi William:

That is correct. If you look at the heading in 'sysdef' you will see that the units are "pages".

If you are running 11.0 or later, you should use 'kmtune -q 'name>' or 'kmtune -l -q for a detailed report of the ed parameter. 'sysdef' is deprecated on 11.x and may not provide as reliable information as 'kmtune'.

Regards!

...JRF...