TCP DELAY
Hi,
While transfering a 42MB file, there seem to be a TCP delay between the kernels 2.4.7 and 2.4.18.
Here are some data :-
In 2.4.7 kernel :
43843584B in 4.486s = 9.77342e+06B/s = 9544.36KB/s = 9.32066MB/s
In 2.4.18 kernel :
43843584B in 3.711s = 1.18145e+07B/s = 11537.6KB/s =
11.2672MB/s
I am looking at the reason behind the delay in 2.4.7 kernel. Any comments on this?
PS: Please CC me with reply, as i am not subscribed to the list.
thanks,
latha
__________________________________________________
Do you Yahoo!?
Y! Web Hosting - Let the expert host your web site
http://webhosting.yahoo.com/
Quoted 4 lines · Latha B lingaiah
Hi,
While transfering a 42MB file, there seem to be a TCP delay between the kernels 2.4.7 and 2.4.18.
Don't do such short measurements, 4.5 seconds is no way to do statistics. TCP/IP does not start out at full speed but takes some time to find the right speed.
Regards,
bert
Signature · 2 lines
http://www.PowerDNS.com Versatile DNS Software & Services http://lartc.org Linux Advanced Routing & Traffic Control HOWTO
Quoted 9 lines · bert hubert
Quoted 4 lines · Latha B lingaiah
Hi,
While transfering a 42MB file, there seem to be a TCP delay between the kernels 2.4.7 and 2.4.18.
Don't do such short measurements, 4.5 seconds is no way to do statistics. TCP/IP does not start out at full speed but takes some time to find the right speed.
If all you do is repeatedly transfer small files of only 42Mb, the difference of 18% between 3.7 and 4.4 seconds is quite measureable.
But you should measure the difference more than once, but I suspect that this was indeed done.....
Roger.
Signature · 5 lines
** [email protected] ** http://www.BitWizard.nl/ ** +31-15-2600998 ** *-- BitWizard writes Linux device drivers for any device you may have! --* * The Worlds Ecosystem is a stable system. Stable systems may experience * * excursions from the stable situation. We are currently in such an * * excursion: The stable situation does not include humans. ***************