Yes same here to be honest... it's seem to have been getting worse.

In reply to a post by MrSaffron:

While indicators both those things can happen on a connection through the normal activity of the DLM

This is very much the case - The old style of DLM intervention (FEC+interleaving) would typically drop speeds and add latency.

The whole point of G.INP, as a new style of DLM intervention, is that it reduces errors without dropping speed or increasing latency.

My line was synced at 80/20, and only hitting about 2 ES's per hour - well under any intervention threshold for the old-style DLM.

It has had G.INP activated, which has left the sync speeds alone, has made no appreciable difference to latency (I see bigger differences by gateway hopping, so it is hard to see the actual impact of G.INP), and it has dropped my error rate to zero.

At the same time, my attainable rate rose by 6Mbps down, 2Mbps up.

However...

We have seen G.INP activation cause drops in speed and increases in latency - but it appears to be mostly (perhaps entirely) down to using a modem that has not been upgraded with G.INP-capable firmware.

What device and firmware version did you have before g.inp

I've got a heap of things here - 2 HG612's from previous installations, plus an ECI from the current installation, though that only stayed on the line for the first 6 hours or so, back at the beginning of February.

One of the HG612's was on the line for a couple of weeks, registering 80/20 actual, and 98/34 attainable, and 50 ES/day. It was running B030SP08; I think I originally flashed it with B02?SP10, but didn't disable the agent - it was automatically updated a long time ago (though I never tracked the version at the time) and currently has B030SP08.

I was using a billion 8800NL as router at that time, in EWAN mode. I swapped this to being the VDSL2 modem too in mid February, which caused it to improve attainable speeds by about 1Mbps. SNR has varied since then, with one or two new subscribers, but the attainable was (prior to G.INP) sitting close to 101/33. This is running 2.32d.dh14 and A2pv6F039g1.d24m

The Billion was the one running the line when G.INP activated.

I'll eventually swap the HG612's onto the line, to check their performance out too.

So to clarify just before and during the activation of G.INP on your line yours using a Billion 8800NL for both Modem and Routing correct?

Yup

OK so you was already prepped for G.INP

In reply to a post by mlmclaren:

OK so you was already prepped for G.INP

It looks like it.

Recent posts from Billion support staff suggested otherwise, so I was prepared to have to jump back to the HG612, but it turns out the Billion coped perfectly well.

Are you on an ECI cabinet or Huawei?

As I understand ECI cabinets haven't had G.INP enabled yet.

Tim

Same result here with Billion NL as modem router .
G.INP enabled now showing some interleaving which wasnt there before ! Latency has if anything gone down 0.2ms to 19.2ms according to my AskSam monitor, ES rate gone from 5 /hr to 0 . Difficult to say what has happened to Max achievable speed (currently 107Mbps) as SNRM is constantly moving a few dB. ( has dropped 10dB since first connected).
Looking back on my Samknows stats my latency increased by 1 msec when I moved from adsL2+ to FTTC.