diff options
| author | andre <andre@FreeBSD.org> | 2006-11-02 17:45:28 +0000 |
|---|---|---|
| committer | andre <andre@FreeBSD.org> | 2006-11-02 17:45:28 +0000 |
| commit | 429c8e9145f0770e3a0312e2c26c2f004816e89c (patch) | |
| tree | 7c753b15081f29f1a7d07842d299a23adc48711a /sys/boot/common/load_elf.c | |
| parent | d1cc5b22d78b6226d2469a4044e415f618ab894a (diff) | |
| download | FreeBSD-src-429c8e9145f0770e3a0312e2c26c2f004816e89c.zip FreeBSD-src-429c8e9145f0770e3a0312e2c26c2f004816e89c.tar.gz | |
Use the improved m_uiotombuf() function instead of home grown sosend_copyin()
to do the userland to kernel copying in sosend_generic() and sosend_dgram().
sosend_copyin() is retained for ZERO_COPY_SOCKETS which are not yet supported
by m_uiotombuf().
Benchmaring shows significant improvements (95% confidence):
66% less cpu (or 2.9 times better) with new sosend vs. old sosend (non-TSO)
65% less cpu (or 2.8 times better) with new sosend vs. old sosend (TSO)
(Sender AMD Opteron 852 (2.6GHz) with em(4) PCI-X-133 interface and receiver
DELL Poweredge SC1425 P-IV Xeon 3.2GHz with em(4) LOM connected back to back
at 1000Base-TX full duplex.)
Sponsored by: TCP/IP Optimization Fundraise 2005
MFC after: 3 month
Diffstat (limited to 'sys/boot/common/load_elf.c')
0 files changed, 0 insertions, 0 deletions
