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Changing speed limits drops speeds to 0kbps


2mg

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Hi,

beforehand, I have speed limit checked for UTP and transport overhead.

Problem: When I limit the uTorrent speed, be it DL or UL, everything goes to a halt (around 0kbps), even though the torrent in process isn't stopped or paused - just stuck at 0kbps. I have to restart uTorrent each time for limits to take effect AND to continue UL/DL again.

 

Unchecking limit for overhead fixes this, but I need uTorrent to limit the overhead too. Also, this isn't noticeable for the first time you enable overhead limiting and try to limit uTorrent's speeds.

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  • 1 month later...
On 9/20/2017 at 2:33 AM, PiusX said:

Screen shot of what you did? Did this happen before what you did the changes? What version are we talking about?

v3.5 44090. I use Overhead Limit+Utp Limit. Whenever I change my Upload limit, uploads drop to few kBps. Example: I'm using all my upload bandwidth unlimited, I throttle it to 150kBps, everything grinds to a halt because upload speed becomes bare minimum of a few kBps. It works if I restart uTorrent with that specific limit though. Without Overhead limit (but with Utp), limiter works just fine, but I really need to get Overhead in check.

On 9/21/2017 at 9:37 AM, rafi said:

Seems fine here. What  limits you are trying to set?

I usually try to find something comfortable for gaming and using torrents without impact on ping. ~100kBps works, but I can't switch on the fly. See my answer above.

PS: Sorry for the late response.

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3 hours ago, 2mg said:

Without Overhead limit (but with Utp), limiter works just fine, but I really need to get Overhead in check.

Overhead limit can cap/cripple  your traffic more then you think, but blocking acks. You should try and live w/o this limit. Since it is proportional to the traffic (usually  ~5%) and will be limited when the traffic is, why do you need to include it under the limit limit it specifically?

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5 hours ago, rafi said:

Overhead limit can cap/cripple  your traffic more then you think, but blocking acks. You should try and live w/o this limit. Since it is proportional to the traffic (usually  ~5%) and will be limited when the traffic is, why do you need to include it under the limit limit it specifically?

Because I have low tier net service here with quite big DL and low UL speeds, and I really need to fine tune both of them if I want to DL and UL while gaming or similar. I just don't understand why Overhead limiter doesn't function properly though. I can post configs if necessary, but this is a fresh Win7 installation, and the last uTorrent version gave me same troubles.

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Just try tuning your DL and UL limits separately per your connection bandwidth, w/o limiting overhead.  As I've tried to explain - this limit chokes your speeds, usually - sets the DL to the to the UL limit.... It is expected due to TCP behavior.

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10 hours ago, rafi said:

Just try tuning your DL and UL limits separately per your connection bandwidth, w/o limiting overhead.  As I've tried to explain - this limit chokes your speeds, usually - sets the DL to the to the UL limit.... It is expected due to TCP behavior.

I tried limiting UL only, but I have to go to like 5-10kBps, which often doesn't help much as the DL creates *much* more Overhead for my comfort zone. And yes, I do limit my DL accordingly, but it's just iffy sometimes, with UL/DL spikes.

Still doesn't answer why limiters behave that way?

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17 hours ago, rafi said:

As I've tried to explain - this limit chokes your speeds, usually - sets the DL speed to the UL limit.... It is expected due to TCP behavior.

 

Quote

Overhead limit can cap/cripple  your traffic more then you think, by blocking acks.

 

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  • 2 weeks later...
On 11/1/2017 at 6:52 PM, rafi said:

You are welcome to try with my setting file (@sig), to isolate if there is another bad setting in play in yours.

Hi, I've tried your settings. I set UL to Unlimited (from your 75K), went to Options and turned on Limit Overhead, and restarted the program.

I then set UL limit to 150K, it worked as expected. Set to Unlimited again, and restarted the program.

I then set 50K and it throttled UL down to ~5kBps (which choked DL).

I don't understand this behavior at all...

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