Testing network throughput

[johnwright007]

Hi,

I've recently changed the TCP Send receive buffers on a couple of our Oracle servers in the hope it will improve performance. I've increased the send and receive settings from 16384 and 24576 to 279600 and 279600 respectively.

To test the new/old settings I started five file transfers (using FTP) at roughly the same time with each transfer sending a file of about 622Mb in size.

The results I got were that with the larger buffers the throughput was slower!

What am I doing wrong or is there another way to test this?

Thanks.

John

 

[tuka]

There is a ttcp (test tcp)test which will test the network interfaces
on Solaris. This ttcp should be available on the web (search Google). If you can't find a copy I can get one Monday and forward it to you. It is a copy I got from Sun.

If you can't find a copy let me know and I will email you a copy Monday.

 

[daFranze]

does ttcp run on newer Solaris Versions, such as Sol9?

Best Regards, Franz
--
Solaris System Manager from Munich, Germany
I used to work for Sun Microsystems Support (EMEA) for 5 years

 

[tuka]

Have only ran on Solaris 8.

It is ELF 32-bit MSB Excutable Sparc Version 1 dynamically
linked, not stripped

 

[tuka]

I saw on google where a person was using ttcp on solaris 9.

 

[daFranze]

some month ago I tried to get ttcp for Solaris 9 but I/it ran into problems, that's why I'm asking...

Best Regards, Franz
--
Solaris System Manager from Munich, Germany
I used to work for Sun Microsystems Support (EMEA) for 5 years