TIP: Speeding up deluge - Global bandwidth usage

[Scorminerd]

Hi All,

I'm hoping that this isn't a duplicate post, but some Googling didn't find this information -- I'm hoping that by posting here, now it will.

I had previously been using uTorrent on a WinXP machine that was exclusively for downloading. I decided to trade that in for a CentOS instance in VirtualBox, and installed Deluge.

I tweaked my upload settings similarly to those of uTorrent, with a global upload speed of 20KiB/s (I know, I'm a terrible person for this, but I use my connection for serving web/email/DNS, and so have very limited spare upstream capacity). With uTorrent I'd regularly get aggregate download speeds of 5 MB/s and up, but with Deluge I was only pulling in about 300KiB/s.

After banging my head against the wall for a bit, I saw that "Protocol Traffic Download / Upload" was sitting at just under 20KiB/s. Because that was very similar to my upload limit, I thought that "Global Bandwidth Usage" might also regulate BitTorrent protocol traffic (I guess logically so, but AFAIK uTorrent has similar option which limits bandwidth for torrent payload traffic across all torrents, and so I thought that this was similar).

I changed "Maximum Upload Speed" in the global section to -1, the per-torrent upload speed to 10KiB/s, and almost immediately saw my DL speed increase. After a few minutes it was at 6.2MiB/s!

Just thought I'd share this because amongst all the other advice I found for increasing Deluge's speed, this was not addressed. (Shame on me of course for changing settings in the first place without fully understanding them).

If I'm incorrect about the global bandwidth usage, please let me know.

Scott

[DonP]

Hi Scott,
Thank you for the tip
But -1 is a convention that means unlimited, not only with Deluge.
Example :Each time you want unlimited memory with FireFox settings you put -1 , unlimited disk cache is -1 etc...

Same thing with water : if you want ice set your fridge to -1 (Celsius)
Cordially
DonP
Running LinuxMint 15 FFox 23 Toshiba Pentium Ram 4 Meg

[Scorminerd]

Hi Don,

Quite right about -1. I've also used zero in cases where zero would have no useful meaning, particularly when it's preferable to store the value as an unsigned integer.

But my tip was specifically that the global upload speed seems to also effect the protocol traffic; setting to a higher value (or the lowest value of -1) then seems to speed up the download payload data rate as well. I felt that was counterintuitive at first.

Regards,

Scott