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extend the whole_pieces_threshold setting to also request contiguous pieces from fast peers

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arvidn 2019-03-28 14:28:15 +01:00 committed by Arvid Norberg
parent 6fbeb93d50
commit 9da041a24d
2 changed files with 18 additions and 5 deletions
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1
ChangeLog
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@ -1,3 +1,4 @@
* pick contiguous pieces from peers with high download rate
* fix error handling of moving storage to a drive letter that isn't mounted
* fix HTTP Host header when using proxy

22
src/request_blocks.cpp
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@ -116,12 +116,24 @@ namespace libtorrent {
&& !time_critical_mode
&& t.settings().get_int(settings_pack::whole_pieces_threshold) > 0)
{
// if our download rate lets us download a whole piece in
// "whole_pieces_threshold" seconds, we prefer to pick an entire piece.
// If we can download multiple whole pieces, we prefer to download that
// many contiguous pieces.
// download_rate times the whole piece threshold (seconds) gives the
// number of bytes downloaded in one window of that threshold, divided
// by the piece size give us the number of (whole) pieces downloaded
// in the window.
int const contiguous_pieces =
std::min(c.statistics().download_payload_rate()
* t.settings().get_int(settings_pack::whole_pieces_threshold)
, 8 * 1024 * 1024)
/ t.torrent_file().piece_length();
int const blocks_per_piece = t.torrent_file().piece_length() / t.block_size();
prefer_contiguous_blocks
= (c.statistics().download_payload_rate()
> t.torrent_file().piece_length()
/ t.settings().get_int(settings_pack::whole_pieces_threshold))
? blocks_per_piece : 0;
prefer_contiguous_blocks = contiguous_pieces * blocks_per_piece;
}
// if we prefer whole pieces, the piece picker will pick at least