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[Weggy]

Hi,

I'm with BT and I have the EchoLife HG612. I understand that "Interleaving" could effect my latency in a negative way (I want low latency). Is there a way I can check this?

In addition, could anyone outline what I might need to check for having poor latency (over 300ms) when my line is suffering from bufferbloat / fully loaded.

Many Thanks!

Later Addition...
I've just read the following line on the BT web site "Interleaving can't be switched off for fibre-based broadband lines (such as Ultrafast Fibre or Superfast Fibre). But you can ask for it to be switched off on ADSL (copper) broadband lines - although we don't recommend this." http://bt.custhelp.com/app/answers/detail/a_id/8547/~/what-is-interleaving%3F-what-are-its-pros-and-cons%3F-can-i-ask-for-it-to-be

I assume this is true? If so given my "Superfast Fibre 2 Unlimited" package, I have no option here?

[burakkucat]

Welcome to the Kitz forum. 

Later Addition...
I've just read the following line on the BT web site "Interleaving can't be switched off for fibre-based broadband lines (such as Ultrafast Fibre or Superfast Fibre).

 . . .

I assume this is true? If so given my "Superfast Fibre 2 Unlimited" package, I have no option here?

Yes, that is correct. There is a DLM process which constantly monitors the service and will adjust various circuit parameters to ensure stability & best throughput speed.

[j0hn]

Is there a way I can check this?

Have you unlocked the HG612 to gain access its stats?

[Weggy]

Have you unlocked the HG612 to gain access its stats?

Yes I have but I don't know where I need to be looking

[Weggy]

Welcome to the Kitz forum. 

Yes, that is correct. There is a DLM process which constantly monitors the service and will adjust various circuit parameters to ensure stability & best throughput speed.

Yea this is the thing. My snr margin is 19 and I'm wondering if this adjustment while improving my speed has negatively effected my latency. I have a major issue playing games when someones using the line in a spike manner for example netflix. My bufferbloat rating is A on dslreports so I dont see what else I can do.

Here's a long thread outlining me trying to fix the issue from my router with no luck: https://www.snbforums.com/threads/qos-and-ping-in-dota-2-please-help-me.48548/page-5

[jelv]

If you had a perfect line with latency of 1ms that would not cure the problem of latency spikes when someone else is using all the line capacity!

You need to be looking at limiting the ability of others to saturate the line.

[johnson]

From the thread you say you have an Asus RT-AC5300, have you tried the merlin firmware? It appears to support fq_codel and so could fix your lag during usage spikes. I have no experience of asus routers or merlin, but SQM in openwrt fixes the exact issue you are experiencing, so if merlins implementation of it is functional it should do the same.

If you have tried this (sorry I didnt read the whole 5 page thread you linked), try reducing the ingress and egress values you give the SQM settings in merlin. I have known the bufferbloat tests on dslreports to show A+ when there was still significant spikes in latency when using full bandwidth of the connection. Try a heavily multistream download (torrent a linux iso) and monitor your ping to a stable server yourself.

[j0hn]

To answer your original question (tell if the line is interleaved) you'll need to telnet in to the HG612 and issue the command xdslcmd info --stats and post the results here.

Alternatively you could install DSLStats and configure that for the HG612 and post the results of the 1st Telnet tab.

[Weggy]

To answer your original question (tell if the line is interleaved) you'll need to telnet in to the HG612 and issue the command xdslcmd info --stats and post the results here.

Alternatively you could install DSLStats and configure that for the HG612 and post the results of the 1st Telnet tab.

Code: [Select]

xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 0
Last initialization procedure status:   0
Max:    Upstream rate = 11506 Kbps, Downstream rate = 49884 Kbps
Bearer: 0, Upstream rate = 11394 Kbps, Downstream rate = 51638 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Link Power State:       L0
Mode:                   VDSL2 Annex B
VDSL2 Profile:          Profile 17a
TPS-TC:                 PTM Mode(0x0)
Trellis:                U:ON /D:ON
Line Status:            No Defect
Training Status:        Showtime
                Down            Up
SNR (dB):        2.9             6.6
Attn(dB):        19.7            0.0
Pwr(dBm):        12.7            7.4
                        VDSL2 framing
                        Bearer 0
MSGc:           -6              26
B:              227             237
M:              1               1
T:              0               51
R:              12              16
S:              0.1404          0.6641
L:              13672           3060
D:              4               1
I:              240             127
N:              240             254
Q:              4               0
V:              0               0
RxQueue:                126             0
TxQueue:                21              0
G.INP Framing:          18              0
G.INP lookback:         21              0
RRC bits:               0               24
                        Bearer 1
MSGc:           122             -6
B:              0               0
M:              2               0
T:              2               0
R:              16              0
S:              8.0000          0.0000
L:              32              0
D:              1               0
I:              32              0
N:              32              0
Q:              0               0
V:              0               0
RxQueue:                0               0
TxQueue:                0               0
G.INP Framing:          0               0
G.INP lookback:         0               0
RRC bits:               0               0
                        Counters
                        Bearer 0
OHF:            0               1925398
OHFErr:         0               34
RS:             2366465380              4144516
RSCorr:         1165316         157
RSUnCorr:       0               0
                        Bearer 1
OHF:            5192715         0
OHFErr:         0               0
RS:             41541229                0
RSCorr:         37              0
RSUnCorr:       0               0

                        Retransmit Counters
rtx_tx:         46408700                0
rtx_c:          2067            0
rtx_uc:         0               0

                        G.INP Counters
LEFTRS:         0               0
minEFTR:        51640           0
errFreeBits:    65678068                0

                        Bearer 0
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    3987697595              0
Data Cells:     86344740                0
Drop Cells:     0
Bit Errors:     0               0

                        Bearer 1
HEC:            0               0
OCD:            0               0
LCD:            0               0
Total Cells:    0               0
Data Cells:     0               0
Drop Cells:     0
Bit Errors:     0               0

ES:             0               33
SES:            0               0
UAS:            26              26
AS:             83409

                        Bearer 0
INP:            58.00           0.00
INPRein:        1.00            0.00
delay:          0               0
PER:            0.00            8.49
OR:             0.01            30.11
AgR:            51751.44        11424.35

                        Bearer 1
INP:            2.00            0.00
INPRein:        2.00            0.00
delay:          0               0
PER:            16.06           0.01
OR:             63.75           0.01
AgR:            63.75   0.01

Bitswap:        52929/52929             1661/1661

Total time = 23 hours 10 min 35 sec
FEC:            1165316         157
CRC:            0               34
ES:             0               33
SES:            0               0
UAS:            26              26
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 15 minutes time = 10 min 35 sec
FEC:            8439            1
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 15 minutes time = 15 min 0 sec
FEC:            11083           8
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Latest 1 day time = 23 hours 10 min 35 sec
FEC:            1165316         157
CRC:            0               34
ES:             0               33
SES:            0               0
UAS:            26              26
LOS:            0               0
LOF:            0               0
LOM:            0               0
Previous 1 day time = 0 sec
FEC:            0               0
CRC:            0               0
ES:             0               0
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0
Since Link time = 23 hours 10 min 7 sec
FEC:            1165316         157
CRC:            0               34
ES:             0               33
SES:            0               0
UAS:            0               0
LOS:            0               0
LOF:            0               0
LOM:            0               0


[underzone]

The answer is no, you are not interleaved. You have g.inp activated and a 3dB profile.

[Weggy]

The answer is no, you are not interleaved. You have g.inp activated and a 3dB profile.

My next dumb question. What does this mean HAHA Is 3dB good or bad?

[re0]

My next dumb question. What does this mean HAHA Is 3dB good or bad?

G.INP is just a form of retransmission that differs from "traditional methods" (RS encoding/FEC) and has a lower overhead associated as it does not constantly transmit redundant data (only on request when there has been a noise burst that has errored data).

3 dB is indeed good if you like more speed. This implies that the noise margin between [background] interference and your connection has been reduced to allocate more bits. As long as your connection is stable then this should remain.

[Weggy]

G.INP is just a form of retransmission that differs from "traditional methods" (RS encoding/FEC) and has a lower overhead associated as it does not constantly transmit redundant data (only on request when there has been a noise burst that has errored data).

3 dB is indeed good if you like more speed. This implies that the noise margin between [background] interference and your connection has been reduced to allocate more bits. As long as your connection is stable then this should remain.

I like speed, but I much much much prefer low latency. Is it good for that?

[jelv]

I like speed, but I much much much prefer low latency. Is it good for that?

Depends. If pushing the line results in more errors it could be worse than increased latency.

[johnson]

I like speed, but I much much much prefer low latency. Is it good for that?

To be clear, none of the line details we are talking about here will have a noticeable effect on gaming. The spikes to 100s of ms you get when others are using your connection will though, and is what you should try and fix if gaming performance matters to you.