topic Re: FTP put very slow in Operating System - HP-UX

FTP put very slow

Omar Alvi_1 — Mon, 26 Jul 2004 09:49:37 GMT

Hi,

I have a case where when I compare a few servers on the same subnet, ftp get takes 60 seconds for one server while taking only 0.12 seconds on the rest.

If this is a unix networking issue, where should I look. The setting of the lan cards is full duplex manual.

Any hints?

Regards,

-Alvi

Re: FTP put very slow

A. Clay Stephenson — Mon, 26 Jul 2004 09:53:38 GMT

Eventhough the setting of the LAN cards is hard-set; I suspect that those settings do not match on the corresponding switch ports. Your symptoms are very common for LAN Port / Ethernet Switch Port mismatches; often, the mismatches work well enough that problems are not at all obvious with telnet sessions but become apparent with more traffic such as FTP.

Re: FTP put very slow

Rick Garland — Mon, 26 Jul 2004 09:54:10 GMT

Check the speed and duplex settings. Can use the lanadmin command.

1st use lanscan to get the proper ID of the specific NIC you are looking at, use that value in lanadmin

lanadmin -x (NMID#)

This will tell speed and duplex

Re: FTP put very slow

Oved — Mon, 26 Jul 2004 12:40:26 GMT

You can switch the suspected server from FD to HD, and then check if it runs faster. If so then the problem is the configuration in the port in the switch.

configuration change for the card is done using: lanadmin -X100HD lanX.

Hope it helps.
Oved

Re: FTP put very slow

Omar Alvi_1 — Tue, 27 Jul 2004 09:39:24 GMT

Hi,

Thanks all for the help.

Still in the investigation process.

On changing to half duplex the transfer speed for 500K file decreased tenfold, from 60 to 6 seconds. This meant a port mismatch. However, on setting the port to full duiplex, the response time increased for (both port and OS full duplex) from 60 to 120 seconds and (for OS half duplex) to 9 seconds.

Something's strange.

Really appreciate your help.

Regards,

-Alvi