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Transmission 2.42 Performance Problem
I have a strange performance problem that I can't make heads and tails of. Maybe anybody have any ideas,?
What I see is that shortly after I start Transmission I get decent DL speed and UL speeds, approx 1Mb+ cs 80-90 kb/sec. After a few hours or after the first files have completed to DL the DL speed drops to 20-50 kb/s and the UL speed drops to 2-6 kbits/s. Stopping Transmission and restarting it usually but not always brings the speed up again.
Som facts:
- I've got a NV+ with 1Gb RAM, RAIDiator 4.1.8 and Transmission 2.42. I've got plenty of space available on the NAS, even on the hdc1.
- My Internet connection is a 24/1 Mbit xDSL line and I've checked so I know I get at least 13/1 which would allow me to DL with roughly 1.3-1.4 Mb/sec but atleast 1Mb/sec.
- I do not have any speedlimitations set
- The NAS is connected to a WNDR3800 thru a 1Gbit/s Netgear switch so I have plenty of speed avaialble there
- I've even done tests with only the NAS and my laptop connected (ie. disconnected the AppleTV 2:nd Gen, the PS3, the AirportExpress, my Server, our TV, the HD-box, my wifes laptop and my daughters laptop).
- I've gone thru the motions with changing the settings.json parameters for cache, peers, not using the default BT ports, etc. so I'm quite sure this is not the problem, although if someone can share their settings I'm interested.
- I have tried different versions of Transmission but either they have the same problem or they have other worse issues, like crashing.
- I've tried the built in BT client which provides much better speed but much less functionality so I'm pretty sure it's not my ISP or the NAS that is the limitation and I'd rather run Transmission if I can since it is more feature rich.
Does anybody have any ideas?
What I see is that shortly after I start Transmission I get decent DL speed and UL speeds, approx 1Mb+ cs 80-90 kb/sec. After a few hours or after the first files have completed to DL the DL speed drops to 20-50 kb/s and the UL speed drops to 2-6 kbits/s. Stopping Transmission and restarting it usually but not always brings the speed up again.
Som facts:
- I've got a NV+ with 1Gb RAM, RAIDiator 4.1.8 and Transmission 2.42. I've got plenty of space available on the NAS, even on the hdc1.
- My Internet connection is a 24/1 Mbit xDSL line and I've checked so I know I get at least 13/1 which would allow me to DL with roughly 1.3-1.4 Mb/sec but atleast 1Mb/sec.
- I do not have any speedlimitations set
- The NAS is connected to a WNDR3800 thru a 1Gbit/s Netgear switch so I have plenty of speed avaialble there
- I've even done tests with only the NAS and my laptop connected (ie. disconnected the AppleTV 2:nd Gen, the PS3, the AirportExpress, my Server, our TV, the HD-box, my wifes laptop and my daughters laptop).
- I've gone thru the motions with changing the settings.json parameters for cache, peers, not using the default BT ports, etc. so I'm quite sure this is not the problem, although if someone can share their settings I'm interested.
- I have tried different versions of Transmission but either they have the same problem or they have other worse issues, like crashing.
- I've tried the built in BT client which provides much better speed but much less functionality so I'm pretty sure it's not my ISP or the NAS that is the limitation and I'd rather run Transmission if I can since it is more feature rich.
Does anybody have any ideas?
12 Replies
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- For those who see this I have now found a useful link: http://www.demonoid.me/faq.php#dut_25
I gave me a few ideas:
1. Find a good balance of the number of Torrents in Transmission. Still working on that but it seems like Transmission and the ReadyNAS NV+ is at best below 20-30 concurrent Torrents, including the ones you are seeding.
2. Have the ReadeyNAS drop connections faster. This is a bit tricky so does anybody have any suggestions? - I think the problem is found. The main problem is that I had some 400+ torrent Active in Transmission, that is to many. Pausing some 300+ torrent made it better, but not good.
The other problem I think was that I had a UL limit set to approx 80% of my DL, per recommendation to make things faster. I removed this limit and things started to DL at reasonable speed.
However I still was not having a lot of luck connection but when connection I get good DL so then i limited the number of active torrent based on the number of available seed and when I kept the number of active seeds to under approx 2000 seeders for all Active Torrent, things are faster again. Not as fast as expected but faster.
So I'm left to think that I have reached the limitation of the ReadyNAS NV+. Anybody got any input on that?
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