Green-Sky/solanaceae_ngc_ft1
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limit the amount it can send in a single tick (speed boost :D)

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Green Sky 2023-12-13 17:56:56 +01:00
parent 0a53a76eb3
commit b0e2cab17a
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2 changed files with 18 additions and 2 deletions
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12
solanaceae/ngc_ft1/cubic.cpp
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@ -76,11 +76,21 @@ int64_t CUBIC::canSend(void) {
return 0u; return 0u;
} }
const int64_t cspace_bytes = getCWnD() - _in_flight_bytes; const auto window = getCWnD();
int64_t cspace_bytes = window - _in_flight_bytes;
if (cspace_bytes < MAXIMUM_SEGMENT_DATA_SIZE) { if (cspace_bytes < MAXIMUM_SEGMENT_DATA_SIZE) {
return 0u; return 0u;
} }
// also limit to max sendrate per tick, which is usually smaller than window
// this is mostly to prevent spikes on empty windows
// assuming at most 20ms tick interval
// TODO: pass down actual tick interval
const auto rate = window / getCurrentDelay();
// we dont want this limit to fall below atleast 1 segment
const int64_t max_bytes_per_tick = std::max<int64_t>(rate * 0.02f + 0.5f, MAXIMUM_SEGMENT_SIZE);
cspace_bytes = std::min<int64_t>(cspace_bytes, max_bytes_per_tick);
// limit to whole packets // limit to whole packets
int64_t cspace_pkgs = (cspace_bytes / MAXIMUM_SEGMENT_DATA_SIZE) * MAXIMUM_SEGMENT_DATA_SIZE; int64_t cspace_pkgs = (cspace_bytes / MAXIMUM_SEGMENT_DATA_SIZE) * MAXIMUM_SEGMENT_DATA_SIZE;

8
solanaceae/ngc_ft1/flow_only.cpp
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@ -41,11 +41,17 @@ int64_t FlowOnly::canSend(void) {
updateWindow(); updateWindow();
const int64_t fspace = _fwnd - _in_flight_bytes; int64_t fspace = _fwnd - _in_flight_bytes;
if (fspace < MAXIMUM_SEGMENT_DATA_SIZE) { if (fspace < MAXIMUM_SEGMENT_DATA_SIZE) {
return 0u; return 0u;
} }
// also limit to max sendrate per tick, which is usually smaller than window
// this is mostly to prevent spikes on empty windows
// assuming at most 20ms tick interval
// TODO: pass down actual tick interval
fspace = std::min<int64_t>(fspace, max_byterate_allowed * 0.02f + 0.5f);
// limit to whole packets // limit to whole packets
return (fspace / MAXIMUM_SEGMENT_DATA_SIZE) * MAXIMUM_SEGMENT_DATA_SIZE; return (fspace / MAXIMUM_SEGMENT_DATA_SIZE) * MAXIMUM_SEGMENT_DATA_SIZE;
} }