Benchmarks...


Jumbo frames (9k for TCP, 4k for STP)

test		bandwidth	rcvcpu	sndcpu
write()		75 MB/s		55%	48%
+MSG_TRUNC	99 MB/s		35%	55%
sendfile()	74 MB/s		55%	12%
+MSG_TRUNC	99 MB/s		31%	19%
STP		98 MB/s		8%	17%

Standard frames (1500 bytes for TCP, 1k for STP)

test		bandwidth	rcvcpu	sndcpu
write()		52 MB/s		55%	50%
+MSG_TRUNC	70 MB/s		52%	70%
sendfile()	45 MB/s		50%	12%
+MSG_TRUNC	70 MB/s		52%	39%
STP		53 MB/s		8%	17%