ISPs started blocking the most common ports used for torrent sharing a long time ago, but because there is truly such a huge pool of ports available, many ISPS seem to have stopped trying to block torrent ports. While many torrent speed guides recommend opening ports in your router, it hardly seems to matter in 2020, depending on your ISP, router model, and overall firewall configuration. The subject of ports and torrent software is a strange one filled with occultic wizardry. OpenDNS is a popular alternative, and Cloudflare offers the fastest DNS available, particularly if you live in Asia.Ĭhanging your DNS will not make you download faster, but it can help you connect to trackers and more peers, especially if your ISP blocks torrents at the DNS level. If you are using your ISP’s default DNS address, or Google’s (8.8.8.8), consider experimenting with other DNS providers out there. There is no magic bullet for increasing torrent speeds aside from having proper settings. Torrents are a wonderful method of downloading legal content, and there are numerous websites that host 100% legal, public domain torrents.Īlso, numerous programs out there claim to “speed up” your torrent downloads while running in the background – these are absolutely false and typically contain adware/spyware or even worse, such as keyloggers. Note: Appual’s does not condone illegal piracy.

This Appual’s guide will walk you through configuring the QBittorrent client itself to achieve maximum possible download speeds. Of course, many torrent users are not aware of how to maximize their download speeds when using a torrent client. QBittorrent is one of the most popular torrent clients, as it is entirely free, lightweight, and available for all platforms. So max_open_files() started returning INT_MAX and we ran into the integer overflow bug.Note: This article has been updated with the latest tweaks as of June 2020. Starting with Big Sur that changed, setrlimit can now set RLIMIT_NOFILES to RLIM_INFINITY, I believe it's still capped at the kernel level to kern.maxfilesperproc, but subsequent calls to getrlimit will report current limit as infinity. Because the cap wasn't raised, max_open_files() returned a sensible number and things kept on working.

These limits are not reported by getrlimit, instead it reports the hard cap as RLIM_INFINITY, but setrlimit did not permit you to raise current cap to infinity - it would fail. Prior to Big Sur, attempting to raise these limits past the kernel caps via setrlimit would either silently fail or return EINVAL. It turns out system resource limits, including the maximum number of open file descriptors, are capped at the kernel level by various sysctl kernel variables. I did some investigating on why this bug only manifests on Big Sur.

Utorrent download slow