topic Re: network speed in Operating System - HP-UX

network speed

navin — Mon, 16 Apr 2007 11:40:25 GMT

Hello ,
I have server running hpux 11.23 OS . There is a slowness found which is not due to network ...auto off on both sides(server + network switch ) and hard coded to 1000 in network switch. Please advice what else could be the problem for the slowness ...login is slow..ftp prompt is slow, not able to use reflection - connection times out. Please advice, thanks in advance

Re: network speed

Jeff_Traigle — Mon, 16 Apr 2007 11:45:00 GMT

1Gbps requires autonegotiate. (The 1Gbps NICs in our servers won't even allow turning off autonegotiation at that speed.)

Re: network speed

navin — Mon, 16 Apr 2007 11:49:28 GMT

But it was fine so far until th eproblem noticed.
Thanks anyway for the reply.

Re: network speed

James R. Ferguson — Mon, 16 Apr 2007 11:51:11 GMT

Hi Navin:

> login is slow..ftp prompt is slow...

Do you perceive a difference if you use an IP Address versus a hostname? If so, this could mean that DNS reverse lookups were the cause of the delay.

Regards!

...JRF...

Re: network speed

navin — Mon, 16 Apr 2007 11:55:47 GMT

Thank you for the input - yes i have tried ip .And it remains same.
Thanks

Re: network speed

A. Clay Stephenson — Mon, 16 Apr 2007 12:05:27 GMT

I don't care if you have been working for a long time; you were working by accident. If you expect Gigabit to work, you must enable auto-negotiate on both ends of the connection. Until this is done, everyone should ignore your requests.

Re: network speed

navin — Mon, 16 Apr 2007 15:28:01 GMT

Hi,
The changes have been done on autoneg - but still the same issue , does it require reboot of the server.
Thanks

Re: network speed

A. Clay Stephenson — Mon, 16 Apr 2007 15:35:27 GMT

A reboot would be the surest although a lanadmin would do it. I assume that you have made the changes to the configuration files on your HP-UX box.

It is not clear that you have a network problem per se; you may have an extremely busy machine. Use glance or top to see how busy your box is. Use swapinfo -tam to see if swap is in use and then use glance or vmstat to examine the pageout rate.

Re: network speed

Sandman! — Mon, 16 Apr 2007 15:35:35 GMT

Any messages indicative of slowness in the syslog.log file?

Re: network speed

navin — Mon, 16 Apr 2007 16:57:27 GMT

Thanks so much for the replies, it turned out that there is a invalid entry in a resolv.conf file - corrected it , which fixed ftp and telnet slowness .but still could not connect through reflection ,getting xdmcp timed out.
please advice

Re: network speed

navin — Mon, 16 Apr 2007 17:06:54 GMT

I have looked at the /var/dt/Xerrors - it said that could not lock Xpid since another dtlogin is running, MT'd the Xpid file and restarted the dtlogin.then refecltion ,seems working fine.

Thank you very much everyone .....for the response.

Re: network speed

A. Clay Stephenson — Mon, 16 Apr 2007 17:10:09 GMT

What type of XDMCP connection are you attempting? Broadcast? Direct? Are you able to start Reflection X then telnet to the HP-UX box and export DISPLAY and then run an X program such as xclock?

Under Advanced XDMCP settings on your ReflectionX software there is an XDMCP timeout setting that defaults to 15 seconds. It may need to be increased.

Re: network speed

navin — Mon, 16 Apr 2007 17:18:16 GMT

Yes , i'm running the direct XDMCP connection. Will increase the connection time out more than 15 sec ,it should help in the future.
Thanks Again

Re: network speed

Bill Hassell — Mon, 16 Apr 2007 19:19:02 GMT

Now that networking is better, bypass all that xdmcp stuff and simply start an xterm (just start Reflection/X, don't connect to the CDE desktop). If xterm pops up quickly then basic networking is working. Now you work on the CDE configs - which are tightly coupled to your DNS configs. To eliminate DNS, rename the resolv.conf file and put the IP address of your PC into /etc/hosts. Now try connecting to the CDE desktop. If this works, you've still got DNS problems (very common with Windows boxes providing DNS services). You can bypass DNS problems by changing your nsswitch.conf file to resolve with hosts first, then DNS.