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| author | Stephen Hemminger <shemminger@osdl.org> | 2006-10-25 23:04:12 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2006-10-25 23:04:12 -0700 |
| commit | 22119240b1c8f64eebb6ffb368c927b2f8be4136 (patch) | |
| tree | 0cdd861c612941b11ff24d4726cda11fb3e785b1 /net/ipv4/tcp_htcp.c | |
| parent | 291b58d663862c3d42d2e8092f8b0dd3f15a94f8 (diff) | |
| download | linux-22119240b1c8f64eebb6ffb368c927b2f8be4136.tar.gz | |
[TCP] cubic: scaling error
Doug Leith observed a discrepancy between the version of CUBIC described
in the papers and the version in 2.6.18. A math error related to scaling
causes Cubic to grow too slowly.
Patch is from "Sangtae Ha" <sha2@ncsu.edu>. I validated that
it does fix the problems.
See the following to show behavior over 500ms 100 Mbit link.
Sender (2.6.19-rc3) --- Bridge (2.6.18-rt7) ------- Receiver (2.6.19-rc3)
1G [netem] 100M
http://developer.osdl.org/shemminger/tcp/2.6.19-rc3/cubic-orig.png
http://developer.osdl.org/shemminger/tcp/2.6.19-rc3/cubic-fix.png
Signed-off-by: Stephen Hemminger <shemminger@osdl.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4/tcp_htcp.c')
0 files changed, 0 insertions, 0 deletions