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тАО12-30-2009 04:26 AM
тАО12-30-2009 04:26 AM
I am looking for a way to know if the Recv-Q shown at the netstat -a command is discaring or not.
I have seen that the queue increments as traffic arrives heavily from "outside" the server.
Because of some issues at the aplication that retrieves the data, i am suspicious that there may be discards at a queue for a particular udp port (1813 to be precise).
So i would like to know how can i check for discards.
Platforms checked are DS-10 standalone, and DS-25 cluster, running TRU-64 5.1B PK4.
Thanks in advance,
Martin.
Solved! Go to Solution.
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тАО01-11-2010 10:44 AM
тАО01-11-2010 10:44 AM
Re: Check for discards at udp Recv-Q netstat -a
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тАО01-11-2010 11:33 AM
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тАО01-12-2010 01:26 PM
тАО01-12-2010 01:26 PM
Re: Check for discards at udp Recv-Q netstat -a
Using netstat -s, i see now that discards at udp due to "full sockets" are probably the cause of the application issue i am having.
Is there a way to know the size of the UDP buffer, and a way to increase the buffer size?
Thank you very much in advance again,
Martin.
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тАО01-12-2010 04:09 PM
тАО01-12-2010 04:09 PM
Re: Check for discards at udp Recv-Q netstat -a
#man UDP
Rgds,
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тАО01-12-2010 04:34 PM
тАО01-12-2010 04:34 PM
Re: Check for discards at udp Recv-Q netstat -a
You might find answers here:
http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/V51B_HTML/ARH9UETE/DLPPNDXX.HTM#buf-size
Rgds,
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тАО01-12-2010 04:58 PM
тАО01-12-2010 04:58 PM
Re: Check for discards at udp Recv-Q netstat -a
This may be what you're looking for:
http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/V51B_HTML/ARH9GCTE/TNRCLXXX.HTM#udp-recvspace
http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/V40F_HTML/AQ0R3GTE/CHNTXXXX.HTM
http://h30097.www3.hp.com/docs/base_doc/DOCUMENTATION/V40F_HTML/AQ0R3GTE/CHNTXXXX.HTM#net-qlimit
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тАО01-13-2010 04:05 AM
тАО01-13-2010 04:05 AM
Re: Check for discards at udp Recv-Q netstat -a
I will have a look at those docs now,
Kr,
Martin.
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тАО01-13-2010 11:41 AM
тАО01-13-2010 11:41 AM
Re: Check for discards at udp Recv-Q netstat -a
To see the size of the udp send and receive buffers:
sysconfig -q inet udp_recvspace
sysconfig -q inet udp_sendspace
To see the buffer size limits:
sysconfig -Q inet udp_recvspace
sysconfig -Q inet udp_sendspace
To change the size permanently:
sysconfigdb -a -f stanza_file inet
Where stanza file is like this:
inet:
udp_recvspace = 1024000
udp_sendspace = 1024000
This change is applied at the next reboot,
but using
# sysconfig -r inet udp_recvspace=1024000
udp_recvspace: reconfigured
you can reconfigure the attribute on the fly so you do not have to wait to reboot to get the change done.
Thank you very much for pointing me to those docs!!!!
Kind regards,
Martin.
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тАО01-13-2010 01:57 PM
тАО01-13-2010 01:57 PM
Re: Check for discards at udp Recv-Q netstat -a
Best Regards,
cnb