Re: Early SPECWeb99 results on 2.5.33 with TSO on e1000

Quoting jamal [off-list ref]:

So if i understood correctly (looking at the intel site) the main
value add of this feature is probably in having the CPU avoid
reassembling and retransmitting. I am willing to bet that the real

Er, even just assembling and transmitting? I'm thinking of the
reduction in things like separate memory allocation calls and looking
up the route, etc..??

value in your results is in saving on retransmits; I would think
shoving the data down the NIC and avoid the fragmentation shouldnt
give you that much significant CPU savings. Do you have any stats

Why do say that? Wouldnt the fact that youre now reducing the
number of calls down the stack by a significant number provide
a significant saving? 

from the hardware that could show retransmits etc; have you tested
this with zero copy as well (sendfile) again, if i am right you
shouldnt see much benefit from that either?

thanks,
Nivedita