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Arvid Norberg
2004-11-30 11:17:32 +00:00
parent 705e40fda6
commit bc774ff491
9 changed files with 39 additions and 29 deletions
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17
src/policy.cpp
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@@ -64,7 +64,7 @@ namespace
enum
{
// the limits of the download queue size
max_request_queue = 16,
max_request_queue = 100,
min_request_queue = 2,
// the amount of free upload allowed before
@@ -84,13 +84,14 @@ namespace
, std::vector<peer_connection*> ignore = std::vector<peer_connection*>())
{
// this will make the number of requests linearly dependent
// on the rate in which we download from the peer. 2.5kB/s and
// less will make the desired queue size 2 and at about 70 kB/s
// it will reach the maximum of 16 requests.
// matlab expression to plot:
// x = 1:100:100000; plot(x, round(min(max(x ./ 5000 + 1.5, 4), 16)));
// on the rate in which we download from the peer.
// we want the queue to represent:
const int queue_time = 5; // seconds
// (if the latency is more than this, the download will stall)
// so, the queue size is 5 * down_rate / 16 kiB (16 kB is the size of each request)
// the minimum request size is 2 and the maximum is 100
int desired_queue_size = static_cast<int>(c.statistics().download_rate() / 5000.f + 1.5f);
int desired_queue_size = static_cast<int>(5.f * c.statistics().download_rate() / (16 * 1024));
if (desired_queue_size > max_request_queue) desired_queue_size = max_request_queue;
if (desired_queue_size < min_request_queue) desired_queue_size = min_request_queue;
@@ -571,6 +572,8 @@ namespace libtorrent
void policy::pulse()
{
if (m_torrent->is_paused()) return;
using namespace boost::posix_time;
// TODO: we must also remove peers that