AIX 6.1 reach the threshold of stream(no -a|grep strthresh) Post: 302770905

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Operating Systems AIX AIX 6.1 reach the threshold of stream(no -a|grep strthresh) Post 302770905 by MichaelFelt on Tuesday 19th of February 2013 02:31:39 AM

02-19-2013

Registered User

Quote:

and now i suspect the problem is network issue but i don't know how to affirm that.

I have been approaching this as an AIX configuration issue because changing a setting has helped it "go away". Needed: better definition of what you mean by "network issue".

Some data during/after the problem (during - repeating commands to look for deltas helps pin-point what the system is trying to say).

Sort of: no Pain, no Gain.

In any case - real data values - during a backup are needed to know if we are looking at this properly.

FYI: not sure what the limits are these days. Back when CHRP (Common Hardware Reference Platform) first came out IP buffers were limited to 4x 256MB memory, or 1G - up to 50% of memory (so, when more than 2G of memory, maximum was 1G)
no -o thewall tells us the HW limit (1k value) - so roughly, drop 6 digits, and you get the GByte value - on my system with 9G - that makes it near 50% still.

Your number: thewall = 47448064 goes down to 47.
I do not see this as being your limiting factor - unless it is conflicting with something else. However, there is a second variable to set a limit under thewall.

Quote:

You can also use the maxmbuf tunable to lower the thewall limit. You can view the maxmbuf tunable value by running the lsattr -E -l sys0 command . If the maxmbuf value is greater than 0 , the maxmbuf value is used regardless of the value of thewall tunable.
The default value for the maxmbuf tunable is 0. A value of 0 for the maxmbuf tunable indicates that the thewall tunable is used. You can change the maxmbuf tunable value by using the chdev or smitty commands.

Hope this helps moving forward!

MichaelFelt

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LEARN ABOUT BSD

ching

CHING(6)							   Games Manual 							  CHING(6)

NAME

       ching - the book of changes and other cookies

SYNOPSIS

       /usr/games/ching [ hexagram ]

DESCRIPTION

       The I Ching or Book of Changes is an ancient Chinese oracle that has been in use for centuries as a source of wisdom and advice.

       The  text  of  the  oracle  (as it is sometimes known) consists of sixty-four hexagrams, each symbolized by a particular arrangement of six
       straight (---) and broken (- -) lines.  These lines have values ranging from six through nine, with the even values indicating  the  broken
       lines.

       Each  hexagram  consists  of  two major sections.  The Judgement relates specifically to the matter at hand (E.g., "It furthers one to have
       somewhere to go.") while the Image describes the general attributes of the hexagram and how they apply to one's own life ("Thus	the  supe-
       rior man makes himself strong and untiring.").

       When  any  of  the lines have the values six or nine, they are moving lines; for each there is an appended judgement which becomes signifi-
       cant.  Furthermore, the moving lines are inherently unstable and change into their opposites; a second hexagram	(and  thus  an	additional
       judgement) is formed.

       Normally,  one  consults  the  oracle  by  fixing  the  desired	question  firmly  in  mind and then casting a set of changes (lines) using
       yarrow-stalks or tossed coins.  The resulting hexagram will be the answer to the question.

       Using an algorithm suggested by S. C. Johnson, the UNIX oracle simply reads a question from the standard input (up to an  EOF)  and  hashes
       the  individual	characters in combination with the time of day, process id and any other magic numbers which happen to be lying around the
       system.	The resulting value is used as the seed of a random number generator which drives a simulated coin-toss divination.  The answer is
       then piped through nroff for formatting and will appear on the standard output.

       For  those  who wish to remain steadfast in the old traditions, the oracle will also accept the results of a personal divination using, for
       example, coins.	To do this, cast the change and then type the resulting line values as an argument.

       The impatient modern may prefer to settle for Chinese cookies; try fortune(6).

SEE ALSO

       It furthers one to see the great man.

DIAGNOSTICS

       The great prince issues commands,
       Founds states, vests families with fiefs.
       Inferior people should not be employed.

BUGS

       Waiting in the mud
       Brings about the arrival of the enemy.

       If one is not extremely careful,
       Somebody may come up from behind and strike him.
       Misfortune.

7th Edition							   May 20, 1985 							  CHING(6)