**************> QUESTION level 1 --> level 2 SPECIALIST <**************
My customer demands to know some kernel parameters of AIX V4.1.
He wants to compare some general UNIX kernel parameters between
AIX and other UNIX.
I can't find corresponding parameters on AIX to the followings.
Could you tell me what values are set in AIX kernel and how
I can change them ?
NQUEUE - The number of STREAMS queues that the system will
support. Typical value is 96.
NSTREAM - The maximum number of STREAMS that can be open at
any time. Typical value is 32.
Thanks in advance.
************** ANSWER level 2 -- level 1 SPECIALIST **************
==== THIS TEXT HAS BEEN ENTERED BY IBM IN USA
==== RESP: AIXOPSYS AT WTSCPOK ================= DATE:960930
TIME:1046
Response:
NQUEUE
AIX does not have options which are equivalent to the parameters that
you described. A no option "nstrpush" is defined as "Specifies the
maximum number (should be at least 8) of modules that you can push
onto a single Stream. Each module uses a pair of ques. There is no
system parameter for directly limiting the number of ques for all
streams.
NSTREAM
AIX has another no option called "strthresh" which is defined as
"Specifies the maximum number of bytes Streams are normally
allowed to allocate. When the threshold is passed, does not allow
users without the appropriate privilege to open Streams, push modules,
or write to Streams devices, and returns ENOSR. The threshold applies
only to output side and does not affect data coming into the system`
(e.g. console continues to work properly). A value of zero means that
there is no threshold.
The strthresh attribute represents a percentage of the thewall
attribute
and you can set its value from 0 to 100. The thewall attribute
indicates
the maximum number of bytes that can be allocated by Streams and
Sockets
using the net_malloc() call. When you change thewall attribute, the
threshold gets updated accordingly."
Thank you for using AIX Support Family Services.
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