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Messages - Switeck

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Generic / Re: Connections limits
« on: Today at 04:35:56 AM »
Increase the max upload speed to 1500 KiB/sec and test some more.

Also increase global max upload slots to about 75-150.
Max active torrents (though I don't recommend using torrent queueing) can be about 25-35.

Keep everything else the same.

Windows / Re: Queue Downloads Only
« on: Today at 04:33:07 AM »
There seems to be bugs with enabling torrent queues in general, and especially bad results if there's lots of torrents.

Sadly, you're better off as of qBT v4.1.5 with torrent queueing disabled and manually starting and stopping messy as that can be with 2000+ torrents.

Windows / Re: Deleted 300 torrents by accident
« on: Today at 04:23:18 AM »
You've probably lost the .torrent files, but hopefully not the contents of the torrents too.

As for where+how qBT stores its settings:,2826.msg13292/topicseen.html#msg13292      Backup qBT settings!

Generic / Re: Connections limits
« on: April 23, 2019, 09:34:18 AM »
A lot of speed increases by ISPs tend to increase burst speeds but don't let you run those speeds for very long -- minutes to maybe an hour or 2 before congestion (contention with other users) probably occurs.

So how fast can you now upload and download at consistently? (This tends to be way lower than speed tests apps show!)

Windows / Re: Low Download/Upload Speed.
« on: April 18, 2019, 10:01:02 PM »
Maxing out upload speed is probably only possible if there's not a lot of other seeds uploading to the "hungry" peers.
When seeds outnumber peers, then you probably can't upload quickly to peers because everyone else is trying to as well!

Windows / Re: Low Download/Upload Speed.
« on: April 18, 2019, 06:51:11 PM »
Hopefully you're running qBitTorrent v4.1.5 and update when the next version comes out. qBT v3.3.16 was reasonably stable as well, but lacks a few features (like disk coalescing) that improve speeds.

In BitTorrent settings...
If you're only doing private torrents, you can disable DHT, PEX, and LPD...but PEX is good to leave enabled if you sometimes use public torrents.
DHT uses far more connections and is also useful on public torrents that have dead trackers.
Local Peer Discovery is unlikely to find peers/seeds on the same ip range subnet as you (as though they're on the same LAN as you)...and those it does find are probably available through tracker updates, DHT, and PEX anyway.

Torrent Queueing has a few bugs that probably makes it better to stay disabled.

In Connection settings...
Disable uTP on busy torrents, because TCP speeds are much more reliable and faster. (qBT/libtorrent's uTP handling is buggy.) On torrents with few peers/seeds, you'll need uTP.
Disable UPnP/NAT-PMP -- if you're using a VPN or proxy, those are harmful because they forward the wrong network interface. (No need/point in forwarding qBT's listening port on your router if using a VPN or router.)
If not using a VPN or proxy, a manual port forward on your router/gateway is more reliable anyway.

In Advanced settings...
Disable "Resolve peer host names" -- these are often garbage and even sometimes faked to look like something else. It requires making additional connections to do as well.
Disable "Resolve peer countries (GeoIP)" -- these are sometimes wrong and not terribly helpful if you want more speed. It requires making additional connections to do as well.
Disable "Download tracker's favicon" -- this puts additional load on every tracker, which is especially bad if you are adding 20+ trackers to every torrent.

CORRECTION, NOT NECESSARY -> No need to disable "Send upload piece suggestions"
(I retested "Send upload piece suggestions" with qBitTorrent v4.1.5 and didn't experience the slowdowns I did in the past.)

Do NOT set cache size larger than about 1100 MB for qBT 32bit version! It can cause an out-of-memory crash. (32bit apps cannot use more than 2 GB normally.)
Set "Disk cache expiry interval" to 600 seconds (max allowed) to prevent the cache needlessly throwing away data -- it may help more than making the cache size larger than 500 MB.

Make sure "Always announce to all tiers" is checked and remove dead/irrelevant trackers from public torrents. (An irrelevant tracker is one arbitrarily added that is extremely unlikely to find other peers/seeds.)
Disable "Always announce to all trackers in a tier" -- that can actually get you banned from trackers, because you'd otherwise be announcing on their HTTP, HTTPS, and udp trackers all at the same time.

Windows / Re: Low Download/Upload Speed.
« on: April 18, 2019, 02:20:54 AM »
As I've previously stated in my...
EXTREME Speed Tests of various BitTorrent Apps,3956.0.html

...reaching 100 MB/sec using qBitTorrent is extremely hard even under perfect conditions.
I had to use a ramdrive capable of >1 GB/sec speeds to do the tests!
I used TCP instead of uTP -- since uTP seems to struggle to break 1 MB/sec when using 1 seed and 1 peer.

On top of all that, maybe the peers/seeds you're connecting to are slow?

Windows / Re: Ratios got reset
« on: April 17, 2019, 09:37:01 AM »
Private trackers check running totals from the client for current runs, but not past history.
So anything you download and upload while running over the last day goes on their record...they don't forget that when you reset your BT client.

Otherwise, everyone would risk being banned when they change BT clients or even reinstall their client from scratch.

Windows / Re: Window7 And Network Question
« on: April 16, 2019, 10:26:22 PM »
Once again, just like telephones, it doesn't matter who calls who both parties can talk once the phonecall connects.

So the firewalled peer (yours) calls the unfirewalled seed and then once the connection is made they can upload to you.

A NAT firewall doesn't prevent you from connecting to websites on the internet -- this is the same way.

STUN is something pretty incredible:
It uses UDP hole-punching: bypass the NAT firewalls on both ends.

It's like 2 phones that never ring calling each other in the exact same second, so both see the connection as live.
Described in more detail here:

It does require an initial 3rd party (in BitTorrent's case, another peer or seed that both firewalled peers are connected to) to introduce each other and time their outgoing connections to each other.
But once the connection is made, the initial 3rd party peer is no longer needed and costs it no extra it's not acting as a proxy or VPN.

Windows / Re: Ratios got reset
« on: April 16, 2019, 03:08:15 PM »
The private trackers with ratio requirements are internally tracking your ratios separate from what qBitTorrent displays...after all, cheating BitTorrent clients could fake their ratios if they were only self-reported.

So the pain here is only that qBitTorrent isn't showing your real ratios to you anymore, which is annoying enough.

Windows / Re: Window7 And Network Question
« on: April 16, 2019, 06:57:46 AM »
Other BitTorrent clients try to connect to yours incoming on the port 8999 you set as qBT's listening port.
Except your home network's NAT (probably a router) gets in the way, and they all fail.
But...if you have Universal Plug-and-Play (UPnP) enabled in qBT, qBT might auto-forward the listening port on the router/gateway and incoming connections on port 8999 can reach qBT!

Incoming connections can also arrive via uTP STUN, but they have a much tougher time doing it. (It's pretty much only possible on busy public torrents and then only if you have PEX enabled.)

However even a hopelessly firewalled BitTorrent client can still upload/download with other BitTorrent clients if it can connect outgoing to them. This means the destination peers/seeds cannot be firewalled. (They'll have to have their port forwarded on their router.)

It's a little like telephones -- a firewalled peer or seed is like a telephone that never rings but can still call other phone numbers.
It all quits working when nobody answers their phone.

Windows / Re: Doubts about the temporary folder
« on: April 16, 2019, 06:52:08 AM »
Possibly bufferbloat (when high DL speeds cause UL speeds to drop) and/or disk I/O overload (when copying from SSDs to to HDDs.)

Generic / Re: Sawtooth shaped download speed.
« on: April 16, 2019, 06:48:51 AM »
Disabling uTP may allow the latest qBitTorrent to hold closer to a steady speed, but max speeds are likely to be reduced unless on a very busy torrent.

Generic / Re: Connections limits
« on: April 14, 2019, 10:59:52 PM »
If you only use private trackers definitely disable DHT.
PEX you can leave enabled because it won't do any harm if private tracker torrents are properly marked as private torrents.

Windows / Re: #metoo
« on: April 14, 2019, 10:48:00 PM »
But a torrent with thousands of seeds/peers I get bupkis
Sounds like the VPN has started blocking tracker updates and other parts of the BitTorrent protocol...but can't always catch the encrypted connections.

Check the tracker error messages.

As for the other posters, are you also using a VPN or proxy?

Warning: If you're using a VPN or proxy...,5085.0.html

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