Messages in this thread | | | Date | Sat, 14 Jun 2003 15:52:35 +1000 | From | Lincoln Dale <> | Subject | Re: e1000 performance hack for ppc64 (Power4) |
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At 10:41 PM 13/06/2003 -0700, David S. Miller wrote: > From: Lincoln Dale <ltd@cisco.com> > Date: Sat, 14 Jun 2003 11:52:53 +1000 > > unless i misunderstand the problem, you can certainly pad the TCP > options with NOPs ... > >You may not mangle packet if it is not your's alone. > >And every TCP packet is shared with TCP retransmit >queue and therefore would need to be copied before >being mangled.
ok, so lets take this a step further.
can we have the TCP retransmit side take a performance hit if it needs to realign buffers?
once again, for a "high performance app" requiring gigabit-type speeds, its probably fair to say that this is mostly in the realm of applications on a LAN rather than across a WAN or internet. on a switched LAN, i'd expect TCP retransmissions to be far fewer ...
cheers,
lincoln.
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