[netperf-talk] RE: netperf reporting 0 bytes/s

[Srinivasan S]

Hi Rick,

I replaced in  send_tcp_stream() and in send_tcp_maerts() the following line 

          bytes_sent  = ntohd(tcp_stream_result->bytes_received);

with 

          bytes_sent  = tcp_stream_result->bytes_received; //removed ntohd

with this I am able to get what appears to be correct values. Just want a 
confirmation, that the calculation would be theoritically correct.

Thank you so much Rick.

-Srini

-----Original Message-----
From: Rick Jones [mailto:rick.jones2 at hp.com]
Sent: Monday, December 19, 2005 11:33 PM
To: Srinivasan S; netperf-talk at netperf.org
Subject: netperf reporting 0 bytes/s 


Srinivasan S wrote:
> Hi Rick,
> after adding few prints in netperf I observer some value in bytes_received
> and in thruput. when printing in %llx format, but in %f it is all zeros. Is
> it got to do any thing with endian and network to host conversions?

Likely as not differences in the format of floatingpoint numbers.  Sadly, 
netperf echanges floating point numbers because "way back when" there wasn't 
much support for 64-bit integers.  Fixing your problem may require changing 
netperf to move 64-bit integers around.

Short-term you can hack around the problem for the TCP tests at least - but NOT 
the UDP tests - by using the netperf side stats rather than the netserver side 
stats.

rick

I'm going to cc this to netperf-talk because it would be useful for that to be 
in the record and perhaps it will help find someone willing and able to add the 
64-bit integer stuff to the messaging over the holidays :)