Re: Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing todowith ECN)

2001-02-05 Thread Rick Jones
> > As time marches on, the orders of magnitude of the constants may change, > > but basic concepts still remain, and the "lessons" learned in the past > > by one generation tend to get relearned in the next :) for example - > > there is no such a thing as a free lunch... :) > > ;-> > BTW, i am

Re: Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing todowith ECN)

2001-02-05 Thread Rick Jones
As time marches on, the orders of magnitude of the constants may change, but basic concepts still remain, and the "lessons" learned in the past by one generation tend to get relearned in the next :) for example - there is no such a thing as a free lunch... :) ;- BTW, i am reading one

Re: Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing todowith ECN)

2001-02-04 Thread David S. Miller
jamal writes: > > So, now you have to ask how well any given NIC follows chains of > > buffers. At what number of buffers is the overhead in the NIC of > > following the chains enough to keep it from achieving link-rate? > > > > hmmm... not sure how you would enforce this today or why you

Re: Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing todowith ECN)

2001-02-04 Thread jamal
On Tue, 30 Jan 2001, Rick Jones wrote: > > > 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;-> > > Well, I don't

Re: Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing todowith ECN)

2001-02-04 Thread jamal
On Tue, 30 Jan 2001, Rick Jones wrote: 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;- Well, I don't know the

Re: Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing todowith ECN)

2001-02-04 Thread David S. Miller
jamal writes: So, now you have to ask how well any given NIC follows chains of buffers. At what number of buffers is the overhead in the NIC of following the chains enough to keep it from achieving link-rate? hmmm... not sure how you would enforce this today or why you would

Re: Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing todowith ECN)

2001-01-30 Thread Rick Jones
> > 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;-> Well, I don't know the specifics of Linux, but I gather from what

Re: Still not sexy! (Re: sendfile+zerocopy: fairly sexy (nothing todowith ECN)

2001-01-30 Thread Rick Jones
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;- Well, I don't know the specifics of Linux, but I gather from what I've