[UPDATE] Zerocopy BETA 1, against 2.4.2-pre4

From: David S. Miller (davem@redhat.com)
Date: Sun Feb 18 2001 - 19:20:00 EST

I'm calling this "BETA 1" because I currently feel that all
performance and other issues have been addressed and that the
patch is up for serious consideration for inclusion into a
future 2.4.x release:


Besides merging to 2.4.2-pre4 the main change in this release is
a totally revamped paged-SKB sendmsg implementation by Alexey.
I truly believe now that bandwidth/latency is back to where we
were before the zerocopy patches, and preliminary testing done
by Andrew Morton supports this. (actually, in my own testing,
latency over loopback seems to have improved)

Some verbose TCP debugging is enabled in this release, most of
the messages are harmless %99 of the time. If these messages
bother you just set "FASTRETRANS_DEBUG" back to "1" in


David S. Miller
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This archive was generated by hypermail 2b29 : Fri Feb 23 2001 - 21:00:18 EST