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| author | Stephen Hemminger <stephen.hemminger@vyatta.com> | 2009-05-22 15:19:01 -0700 |
|---|---|---|
| committer | Stephen Hemminger <stephen.hemminger@vyatta.com> | 2009-05-22 15:19:01 -0700 |
| commit | a7ec99d913b0169b987a4ebdf2d26a36670b20bb (patch) | |
| tree | 2d3163146d662a3b778a8cb67962c032a465a420 /lib/Vyatta/Qos/Util.pm | |
| parent | d226558aab489fd5d5abf7ead370d713beb80656 (diff) | |
| download | vyatta-cfg-qos-a7ec99d913b0169b987a4ebdf2d26a36670b20bb.tar.gz vyatta-cfg-qos-a7ec99d913b0169b987a4ebdf2d26a36670b20bb.zip | |
Use better RED parameters
Use recommendations from Sally Floyd.
Diffstat (limited to 'lib/Vyatta/Qos/Util.pm')
| -rw-r--r-- | lib/Vyatta/Qos/Util.pm | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/lib/Vyatta/Qos/Util.pm b/lib/Vyatta/Qos/Util.pm index afd5c78..ee1b722 100644 --- a/lib/Vyatta/Qos/Util.pm +++ b/lib/Vyatta/Qos/Util.pm @@ -329,13 +329,16 @@ sub ethtoolRate { # Avpkt = Average Packet Length # Burst = ( 2 * MinThreshold + MaxThreshold) / ( 3 * Avpkt ) # Limit = 4 * MaxThreshold +# +# These are based on Sally Floyd's recommendations: +# http://www.icir.org/floyd/REDparameters.txt sub RedParam { my ( $bandwidth, $latency, $avgpkt ) = @_; my $qmax = ( $bandwidth * $latency ) / 8000000; my $qmin = $qmax / 3; my $burst = ( 2 * $qmin + $qmax ) / ( 3 * $avgpkt ); - return ($qmin, $qmax, $burst); + return ($qmin, $qmax, $burst, 0.1); } 1; |