From: Paf7172@aol.com
Date: Mon Jun 03 2002 - 08:07:29 EDT
Thanks everyone.
http://www.samag.com/documents/s=1323/sam0110e/0110e.htm
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http://www.rvs.uni-hannover.de/people/voeckler/tune/EN/tune.html
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Try a netstat -i to see if you have any interface errors. Check to see if
there are errors or a duplex speed mismatch by checking these settings on
the switch that you are connected to. The error your getting is a TCP error
but if the lower levels of networking aren't configured proeprly it could
cause timeots and a hit on performance. By correcting speed/duplex
mismatches on my switch i got our sites down from 5 second pageloads to 1.25
and collectively they get more than 1 million hits a month.
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There are some tuning hints for websphere on Solaris at:
http://www-3.ibm.com/software/webservers/appserv/doc/v30/se/as3stmsb.html#Head
er_67
I would definitely consider exploring setting your device to hard-coded 100
full-duplex if possible. Talk with your network administrator to make sure
you are plugged into a switch which is capable of full-duplex mode, then run
through the following:
# ndd -set /dev/hme adv_10fdx_cap 0 <-- don't use 10 full
duplex
# ndd -set /dev/hme adv_10hdx_cap 0 <-- don't use 10 half
duplex
# ndd -set /dev/hme adv_100hdx_cap 0 <-- don't use 100 half duplex
# ndd -set /dev/hme adv_100fdx_cap 1 <-- DO use 100 full duplex
# ndd -set /dev/hme adv_autoneg_cap 0 <-- don't use auto-negotiation
Note that the last ndd above will cause the hme interface to reset, causing a
temporary network outage. You'll also want to make sure that the interface
on the switch is hard-set to 100/full as well, auto-negotiation is bad on
either end.
Also, did you make sure to set the tcp_conn_req_max_q on system startup?
Parameters set with ndd will not persist across reboot, they must be set on
startup every time (typically via an initialization script under /etc/rc*.d).
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