Messages in this thread | | | Date | Tue, 30 Jan 2001 20:45:59 -0500 (EST) | From | jamal <> | Subject | Re: Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing to dowith ECN) |
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On Tue, 30 Jan 2001, Rick Jones wrote:
> > ** I reported that there was also an oddity in throughput values, > > unfortunately since no one (other than me) seems to have access > > to a gige cards in the ZC list, nobody can confirm or disprove > > what i posted. Here again as a reminder: > > > > Kernel | tput | sender-CPU | receiver-CPU | > > ------------------------------------------------- > > 2.4.0-pre3 | 99MB/s | 87% | 23% | > > NSF | | | | > > ------------------------------------------------- > > 2.4.0-pre3 | 86MB/s | 100% | 17% | > > SF | | | | > > ------------------------------------------------- > > 2.4.0-pre3 | 66.2 | 60% | 11% | > > +ZC | MB/s | | | > > ------------------------------------------------- > > 2.4.0-pre3 | 68 | 8% | 8% | > > +ZC SF | MB/s | | | > > ------------------------------------------------- > > > > Just ignore the CPU readings, focus on throughput. And could someone plese > > post results? > > In the spirit of the socratic method :)
;->
> > Is your gige card based on Alteon?
Yes, sir, it is. To be precise:
** Sender: SMP-PII-450Mhz, ASUS m/board; 3com version of acenic - 1M version ** receiver: same hardware; acenic alteon card - 1M version
> How does ZC/SG change the nature of the packets presented to the NIC?
what do you mean? I am _sure_ you know how SG/ZC work. So i am suspecting more than socratic view on life here. Could be influence from Aristotle;->
> How well does the NIC do with that changed nature? >
Hard question to answer ;-> I havent done any analysis at that level
cheers, jamal
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