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author | Gerrit Renker <gerrit@erg.abdn.ac.uk> | 2008-06-11 11:19:10 +0100 |
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committer | Gerrit Renker <gerrit@erg.abdn.ac.uk> | 2008-06-11 11:19:10 +0100 |
commit | 1e8a287c79f64226541f5c44aa52d4698bb84cf5 (patch) | |
tree | a280516dae548981cd9c9f981cc7bd8ec879baf2 /net/dccp/ccids/lib/tfrc.h | |
parent | 65907a433ac0ca450c4408080f24c6e4743386b2 (diff) | |
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dccp ccid-3: TFRC reverse-lookup Bug-Fix
This fixes a bug in the reverse lookup of p: given a value f(p), instead of p,
the function returned the smallest tabulated value f(p).
The smallest tabulated value of
10^6 * f(p) = sqrt(2*p/3) + 12 * sqrt(3*p/8) * (32 * p^3 + p)
for p=0.0001 is 8172.
Since this value is scaled by 10^6, the outcome of this bug is that a loss
of 8172/10^6 = 0.8172% was reported whenever the input was below the table
resolution of 0.01%.
This means that the value was over 80 times too high, resulting in large spikes
of the initial loss interval, thus unnecessarily reducing the throughput.
Also corrected the printk format (%u for u32).
Signed-off-by: Gerrit Renker <gerrit@erg.abdn.ac.uk>
Diffstat (limited to 'net/dccp/ccids/lib/tfrc.h')
0 files changed, 0 insertions, 0 deletions