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Fix periodic latency spikes on Windows with WiFi connections. Closes #4209.

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sledgehammer999 2016-03-27 22:53:40 +03:00
parent c474810294
commit c2b6e1ce1a
1 changed files with 15 additions and 0 deletions
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15
src/app/main.cpp
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@ -215,6 +215,21 @@ int main(int argc, char *argv[])
return EXIT_SUCCESS; return EXIT_SUCCESS;
} }
#if defined(Q_OS_WIN) && defined(QBT_USES_QT5)
// This affects only Windows apparently and Qt5.
// When QNetworkAccessManager is instantiated it regularly starts polling
// the network interfaces to see what's available and their status.
// This polling creates jitter and high ping with wifi interfaces.
// So here we disable it for lack of better measure.
// It will also spew this message in the console: QObject::startTimer: Timers cannot have negative intervals
// For more info see:
// 1. https://github.com/qbittorrent/qBittorrent/issues/4209
// 2. https://bugreports.qt.io/browse/QTBUG-40332
// 3. https://bugreports.qt.io/browse/QTBUG-46015
qputenv("QT_BEARER_POLL_TIMEOUT", QByteArray::number(-1));
#endif
#ifndef DISABLE_GUI #ifndef DISABLE_GUI
if (!upgrade()) return EXIT_FAILURE; if (!upgrade()) return EXIT_FAILURE;
#else #else