floating point operations
jhealy at swin.edu.au
Wed Oct 31 17:31:42 PDT 2007
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We've been making experimental changes to FreeBSD's TCP congestion
control code, and we used a few floating point operations initially in
We've since gone back and converted all but one of the operations to
fixed point maths in following the no-flops-in-kernel mantra.
The remaining op is not easily converted to fixed point math, and we're
wondering what impact a single flop on the receipt of each ACK will
have. We don't have a strong understanding of the amount of overhead
involved in executing a flop instead of an int op on modern hardware.
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