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Where is the same TCP parameters in AIX?

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Operating Systems AIX Where is the same TCP parameters in AIX?
# 1  
Old 03-23-2012
Question Where is the same TCP parameters in AIX?
I am try to tuning a parameter in AIX 5L and 6 (for performance issue.)

I find a link(https://forums.oracle.com/forums/thr...hreadID=886358)

The thread mention two parameter below, I can use "ndd" command to tuning.
tcp_deferred_ack_interval = 2
tcp_deferred_ack_max = 2

but I can't find ndd command on AIX system.

Can any one guide me to tuning the parameter on AIX system?

Thanks.
# 2  
Old 03-23-2012
I guess what you are searching for are tcp_nodelay or tcp_nagle_limit and
tcp_nodelayack

you can change the values with no -p -o tunablename=newvalue

Regards
zxmaus
# 3  
Old 03-23-2012
Dear zxmaus

Thanks for your help!

You are right, the parameter tcp_deferred_ack_interval may equal to tcp_nodelayack.

but I am not sure tcp_deferred_ack_max is equal to tcp_nagle_limit

because I find a Solaris document(tcp_deferred_acks_max) ,
that has "tcp_deferred_ack_max" parameter's description:
(I compare it with AIX no man page.)
Quote:
Species the maximum number of TCP segmentsreceived from
remote destinations(not directly connected) before an acknowledgment(ACK)is generated.
TCP segments are measured in units of maximum segmentsize(MSS) for individual connections.

If set to 0 or 1,no ACKs are delayed,assuming all segments are 1 MSS long.
The actual number is dynamically calculated for each connection.
The value is the default maximum.
Quote:
tcp_nagle_limit
Purpose:
This is the Nagle Algorithm threshold in bytes which can be used to disable Nagle.
Tuning:
The default is Nagle turned on. To disable Nagle, set this value to 0 or 1. TCP disables Nagle for data segments larger than or equal to this threshold value.
Any suggestion ?
# 4  
Old 03-23-2012
For tuning AIX I recommend you read the AIX documentation not Solaris documentation...
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