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Tune prefetch, squish bugs.

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Konstantin Seiler 2019-11-08 08:58:17 +11:00
parent 6422dcef78
commit c4e0f15eb3
3 changed files with 11 additions and 17 deletions
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9
audio/src/fetch.rs
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@ -541,7 +541,7 @@ impl Future for AudioFileFetchDataReceiver {
if 0.001 * (duration.as_millis() as f64) > MAXIMUM_ASSUMED_PING_TIME_SECONDS { if 0.001 * (duration.as_millis() as f64) > MAXIMUM_ASSUMED_PING_TIME_SECONDS {
duration_ms = (MAXIMUM_ASSUMED_PING_TIME_SECONDS * 1000.0) as u64; duration_ms = (MAXIMUM_ASSUMED_PING_TIME_SECONDS * 1000.0) as u64;
} else { } else {
duration_ms = duration.as_secs() * 1000 + duration.subsec_millis() as u64; duration_ms = duration.as_millis() as u64;
} }
let _ = self.file_data_tx.unbounded_send(ReceivedData::ResponseTimeMs(duration_ms as usize)); let _ = self.file_data_tx.unbounded_send(ReceivedData::ResponseTimeMs(duration_ms as usize));
self.measure_ping_time = false; self.measure_ping_time = false;
@ -896,15 +896,16 @@ impl Future for AudioFileFetch {
download_status.requested.minus(&download_status.downloaded).len() download_status.requested.minus(&download_status.downloaded).len()
}; };
let ping_time_seconds = 0.0001 * self.shared.ping_time_ms.load(atomic::Ordering::Relaxed) as f64; let ping_time_seconds = 0.001 * self.shared.ping_time_ms.load(atomic::Ordering::Relaxed) as f64;
let download_rate = self.session.channel().get_download_rate_estimate();
let desired_pending_bytes = max( let desired_pending_bytes = max(
(PREFETCH_THRESHOLD_FACTOR * ping_time_seconds * self.shared.stream_data_rate as f64) as usize, (PREFETCH_THRESHOLD_FACTOR * ping_time_seconds * self.shared.stream_data_rate as f64) as usize,
(FAST_PREFETCH_THRESHOLD_FACTOR * ping_time_seconds * self.session.channel().get_download_rate_estimate() as f64) as usize (FAST_PREFETCH_THRESHOLD_FACTOR * ping_time_seconds * download_rate as f64) as usize
); );
if bytes_pending < desired_pending_bytes { if bytes_pending < desired_pending_bytes {
trace!("Prefetching more data. pending bytes({}) < {}",bytes_pending, desired_pending_bytes); trace!("Prefetching more data. pending: {}, desired: {}, ping: {}, rate: {}", bytes_pending, desired_pending_bytes, ping_time_seconds, download_rate);
self.pre_fetch_more_data(desired_pending_bytes - bytes_pending); self.pre_fetch_more_data(desired_pending_bytes - bytes_pending);
} }
} }

2
audio/src/range_set.rs
View file

@ -186,6 +186,7 @@ impl RangeSet {
} }
if index < self.ranges.len() && self.ranges[index].start < range.end() { if index < self.ranges.len() && self.ranges[index].start < range.end() {
self.ranges[index].length -= range.end() - self.ranges[index].start;
self.ranges[index].start = range.end(); self.ranges[index].start = range.end();
} }
@ -199,6 +200,7 @@ impl RangeSet {
length: range.start - self.ranges[index].start, length: range.start - self.ranges[index].start,
}; };
self.ranges[index].length -= range.end() - self.ranges[index].start;
self.ranges[index].start = range.end(); self.ranges[index].start = range.end();
self.ranges.insert(index, first_range); self.ranges.insert(index, first_range);

17
core/src/channel.rs
View file

@ -14,7 +14,6 @@ component! {
download_rate_estimate: usize = 0, download_rate_estimate: usize = 0,
download_measurement_start: Option<Instant> = None, download_measurement_start: Option<Instant> = None,
download_measurement_bytes: usize = 0, download_measurement_bytes: usize = 0,
download_measurement_last_received: Option<Instant> = None,
} }
} }
@ -72,23 +71,15 @@ impl ChannelManager {
let current_time = Instant::now(); let current_time = Instant::now();
if let Some(download_measurement_start) = inner.download_measurement_start { if let Some(download_measurement_start) = inner.download_measurement_start {
if let Some(download_measurement_last_received) = inner.download_measurement_last_received { if (current_time - download_measurement_start).as_millis() > 1000 {
if (current_time - download_measurement_start).as_millis() > 1000 { inner.download_rate_estimate = 1000 * inner.download_measurement_bytes / (current_time - download_measurement_start).as_millis() as usize;
if (current_time - download_measurement_last_received).as_millis() <= 500 { inner.download_measurement_start = Some(current_time);
inner.download_rate_estimate = 1000 * inner.download_measurement_bytes / (current_time - download_measurement_start).as_millis() as usize; inner.download_measurement_bytes = 0;
} else {
inner.download_rate_estimate = 1000 * inner.download_measurement_bytes / (500+(download_measurement_last_received - download_measurement_start).as_millis() as usize);
}
inner.download_measurement_start = Some(current_time);
inner.download_measurement_bytes = 0;
}
} }
} else { } else {
inner.download_measurement_start = Some(current_time); inner.download_measurement_start = Some(current_time);
} }
inner.download_measurement_last_received = Some(current_time);
inner.download_measurement_bytes += data.len(); inner.download_measurement_bytes += data.len();
if let Entry::Occupied(entry) = inner.channels.entry(id) { if let Entry::Occupied(entry) = inner.channels.entry(id) {