Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[Bowdon]

I know that G.INP can improve the sync speed of a line. But can it also boost the attainable rate too?

[gazaai]

In my case G.INP improved both my sync rate and attainable rate by arround 5mb when I had it.

[William Grimsley]

Yes, though the difference will be greater the higher the original sync rate is.

[Interceptor121]

My understanding is that if your line takes G.INP and by doing so drops Reed Solomon correction your effective speed will increase as G.INP overhead is only 3.3% versus 8% of RS error correction
However if your line maintains RS error correction and takes also G.INP then overall the speed and the sync rate will drop

[ejs]

Please stop plucking arbitrary percentages out of the air! The overhead of the RS data could be higher or lower than 8%, and I very much doubt the overhead of G.INP is 3.3%.

The actual and max attainable net data rates will be affected by the same things, if something improves one it will improve both. Unless you were considering the max attainable rate reported with high levels of interleaving, which don't really match the actual rate.

[Interceptor121]

G.INP itself has no overhead as it is based on retransmissions however the fact that you need to allow another bearer and also have a fall back in case this does not retransmit quick enough means that on average your IP profile is around 3.3% lower. On non G.INP your IP profile is much lower.
I had IP profiles of 36.8 moving to 38.6 when G.INP was enabled with the same 40000 sync speed.
The amount of redundancy applied reduces.
Max attainable rate however does not change only the real download speed is affected the connection syncs at the same speed.

[William Grimsley]

Seriously, how much longer do we have to keep going on about overheads? Interceptor121, I think ejs has made it clear what it is.

[Interceptor121]

Seriously, how much longer do we have to keep going on about overheads? Interceptor121, I think ejs has made it clear what it is.

They are two different things being discussed if you are able to read
attainable rate has no relationship with anything
real throughput instead has to do with current sync rate and overhead
So G.INP does not improve the max attainable rate but does improve throughput that effectively is what you experience

[kitz]

Please stop.   All of you.   Sick of the condescending tones that appear to have crept into a lot of posts of late which soon escalate.
There is no need for it.   

William, you may not be aware but you are only inflaming things further. 

Everyone please think before you type..  there is another human being on the other side of the PC and this is not a willy waving site. 


----
ETA   and just as I hit the send.. yet another mod report comes through.

Some posts have been deleted.   

[digitalnemesis]

G.INP gives you the sync you would get on fastpath but with re-transmissions for errors.

It's like free error correction without the latency or reduced sync rate.