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[tommy45]

When compared to  the ECI modem, the  min latency shoots up to 100ms + using the HG612, where as  when using the eci it was around 40ms tops maxing the upstream out  with 6-10 threads to a FTP server,  does any one else see this with their HG612?

[boost]

QoS disabled on the HG or perhaps a better processor in the ECI? There must be a reason the later HG appears to run cooler...!

[tommy45]

Yeah the QOS option is disabled as far as i can tell, could be the on board cpu  that is responsible for the latency increases, seems very likely

[kitz]

Not seen it.. but obviously somethings working hard.
Im not sure how this would affect things.. but what about packet loss and delays from CRCs?

[boost]

Yeah the QOS option is disabled as far as i can tell, could be the on board cpu  that is responsible for the latency increases, seems very likely

I would personally re-enable the QoS unless you are prioritising traffic on another device? It would explain the latency jump on upstream rapage.

Interleaving/INP differences between the two modems and adjacent MSANs would be the other I guess? Not easy to find out though as I believe the ECI doesn't provide stats...?

[tommy45]

Well both modem and Dslam are Huawei currently Min latency is slightly higher , which i recall someone else talking about ,

As for interleaving it's off in both directions currently and was also off prior to me swapping  to the hg612

[boost]

I'm better with vendor strings than names

Huawei = which vendor string?

What kinda numbers are we talking here too?

I've had an ECI modem connected to my dad's ECI cabinet all week and the latency has remained a solid 11ms with the occasional 10ms. This is no different to the SR102 it replaced. This is a 40/10 service btw. I will probably chuck the HG on it next week so see some stats now that I have a realistic baseline.

[tommy45]

HG612 3B modem, when compared to the ECI (2013)  If i try and fully utilize the upstream by using an FTP client  to upload 6 or more threads at the same time, the min/average latency shows a greater increase when using the HG612  when compared to the ECI , My baseline latency is 12-13ms  when connection is idle, 

ECI ftp  6 threads min /ave latency increases to 35-40ms

Huawei FTP 6 threads min/ave latency increase to 100-135ms

Both tests performed on the same PC using the same FTPclient to the same FTPserver

Interestingly you referred to temp of the HG612 running cooler than the ECI  i personally haven't observed much difference between the 2 , both seem to run cool

The min base latency  has only increased by 1-2ms  and it is more or less stable, through a 24hrs period,  downloading , gives the same/similar results  as the ECI a typical 1 ms increase, unless the it hits congestion  somewhere during  peak times