Looking at the source, there is no programmatic interface for modifying
this value. In fact, the only interface seems to be /etc/system (which
requires a reboot).
Furthermore, poking values directly using mdb bypasses the sanity
checking done in lgrp_main_init() which is presumably there for a reason.
If you dig out the Solaris Tunable Parameters Reference Manual (
http://docs.sun.com/app/docs/doc/817-0404/6mg74vsg1?a=view ) it lists
this tunable as "Dynamic? No". This is normally done because it has no
effect when changed dynamically, or it is dangerous to do so.
I would advise sticking with /etc/system to modify this value (and the
above document lists the acceptable values, at least for Solaris 10).
Regards,
Brian
Kishore Kumar Pusukuri wrote:
Hi,
I know how to change memory placement policies using mdb.
For example, the following is the usage to apply Round Robin policy instead of
the default First-Touch policy:
$ pfexec mdb -kw
...
lgrp_mem_default_policy/W 5
.....
However, could you tell me how to do the same through a C program, please?
Thank you
--
Brian Ruthven
Solaris Network RPE (Sustaining)
Oracle UK
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