Optimizing transmission for low power MIPS

[mlaan]

FWIW, having the same issue on a A.C. Ryan PlayonHD with encryption set to 0, DHT & PEX on. Works fine at first, then becomes slower & slower until I have to unplug the power because nothing responds anymore. Version 1.76 (9395).

[rb07]

I've been using encryption for about a month now in a relatively low power NAS and have to report that there are no problems with CPU usage.

I'm not talking about the exact same kind of system you guys are using, my NAS is arm not mips, it runs at 500 MHz and its only 'low power' because it only has 128 MB of RAM (a crappy design decision by Marvel, it could have 2 GB but the arse---- decided to put 1/16th of that, plus non-removable).

Other things to take into consideration:

• Number of active torrents. In average I have around 6 enabled, but only 3 or 4 are really active.
• Kind of tracker. Public trackers mean my torrents use PEX and DHT, private trackers means none of that; lately I'm using mostly private ones.
• Number of connections. I moved the limit up actually, 480 total, left the default 60 per torrent (so I have enough connections for full use of 480/60 = 8 live torrents); in real operation the full number of connections is only used while downloading, under seeding only a small fraction is used. Also, unlike some other reports, the number of active connections does reach close to the number of total connections.
• Also about a month ago my ISP duplicated my bandwidth (actually double download and triple upload)... that made a big difference, I'm not sure if it affects somehow the CPU use.

Some practical advise: telnet/ssh into your device and start looking at the numbers, how many processes, which ones use the most CPU, same for RAM usage, is the system swapping? or worse, trashing?