Kitz ADSL Broadband Information
adsl spacer  
Support this site
Home Broadband ISPs Tech Routers Wiki Forum
 
     
   Compare ISP   Rate your ISP
   Glossary   Glossary
 
Please login or register.

Login with username, password and session length
Advanced search  

News:

Pages: 1 [2]

Author Topic: Reason for Lowish Speed. Help?  (Read 1344 times)

flood

  • Just arrived
  • *
  • Posts: 14
Re: Reason for Lowish Speed. Help?
« Reply #15 on: June 25, 2018, 06:44:02 PM »

Update.

Hello again, my line's been online for 12 days straight, no problems at all. However, DLM seems to be lowering my SNRM ever so slightly by day, usually 0.1 - 0.2.

For the past three days my Down SNRM has averaged 3.0 and my Upload has averaged 6.0

The thing I don't understand is that the decrease in SNRM is causing me to lose speed. I thought the lower the snrm the higher the speed. Why would it be the opposite in my case? Anyone able to solve this riddle?  :-\

Line stats at 7pm
Code: [Select]
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 9594 Kbps, Downstream rate = 51716 Kbps
Bearer: 0, Upstream rate = 9773 Kbps, Downstream rate = 53073 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): 3.0 6.0
Attn(dB): 18.6 0.0
Pwr(dBm): 13.9 7.4
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 227 237
M: 1 1
T: 0 34
R: 12 16
S: 0.1366 0.7732
L: 14052 2628
D: 4 1
I: 240 127
N: 240 254
Q: 4 0
V: 0 0
RxQueue: 128 0
TxQueue: 32 0
G.INP Framing: 18 0
G.INP lookback: 31 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 1358856
OHFErr: 0 127
RS: 3844624020 752437
RSCorr: 6085767 14534
RSUnCorr: 0 0
Bearer 1
OHF: 63224715 0
OHFErr: 0 0
RS: 505797229 0
RSCorr: 381 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 310883 0
rtx_c: 14123 0
rtx_uc: 69054 0

G.INP Counters
LEFTRS: 11 0
minEFTR: 53081 0
errFreeBits: 915580923 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 571131749 0
Data Cells: 2058673628 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: 11 150
SES: 11 0
UAS: 58 47
AS: 1015562

Bearer 0
INP: 51.00 0.00
INPRein: 1.00 0.00
delay: 0 0
PER: 0.00 6.59
OR: 0.01 38.79
AgR: 53189.82 9811.50

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: 286796/286796 7860/7860

Total time = 1 days 11 hours 16 min 15 sec
FEC: 6101544 14593
CRC: 591 150
ES: 11 150
SES: 11 0
UAS: 58 47
LOS: 1 0
LOF: 10 0
LOM: 0 0
Latest 15 minutes time = 1 min 15 sec
FEC: 653 0
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: 6705 0
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 = 11 hours 16 min 15 sec
FEC: 273034 17
CRC: 0 4
ES: 0 4
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 698943 7186
CRC: 0 8
ES: 0 8
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 11 days 18 hours 6 min 1 sec
FEC: 6085767 14534
CRC: 0 127
ES: 0 126
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
#

Code: [Select]
xdslcmd info --pbParams
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 9594 Kbps, Downstream rate = 51716 Kbps
Bearer: 0, Upstream rate = 9773 Kbps, Downstream rate = 53073 Kbps
Bearer: 1, Upstream rate = 0 Kbps, Downstream rate = 0 Kbps
Discovery Phase (Initial) Band Plan
US: (7,32) (871,1205) (1972,2782)
DS: (33,859) (1216,1961) (2793,3970)
Medley Phase (Final) Band Plan
US: (7,32) (871,1205) (1972,2750)
DS: (33,859) (1216,1961) (2793,3970)
  VDSL Port Details   Upstream   Downstream
Attainable Net Data Rate:      9594 kbps     51716 kbps
Actual Aggregate Tx Power:        7.4 dBm      13.9 dBm
====================================================================================
  VDSL Band Status U0 U1 U2 U3 U4 D1 D2 D3
  Line Attenuation(dB): 4.9 28.2 43.5 N/A N/A 13.4 35.2 55.7
Signal Attenuation(dB): 4.9 27.5 42.3 N/A N/A 16.7 34.9 55.7
        SNR Margin(dB): 5.8 6.1 5.9 N/A N/A 2.9 2.9 3.1
         TX Power(dBm): 0.2 -15.4 6.5 N/A N/A 11.3 8.0 6.9
#
Logged

roseway

  • Administrator
  • Senior Kitizen
  • *
  • Posts: 39445
  • Penguins CAN fly
    • DSLstats
Re: Reason for Lowish Speed. Help?
« Reply #16 on: June 25, 2018, 07:21:30 PM »

It's not DLM that's lowering your SNRM. If you look at the end of the line stats which you posted, the uptime was nearly 12 days. When DLM lowers the target SNRM, the connection drops and reconnects. Also, the connection speed will have remained the same over that nearly 12 days, so when you say that the speed dropped I presume you're referring to the download speed as measured using a speedtester? That will be due to some other cause.
Logged
  Eric

Black Sheep

  • Helpful
  • Kitizen
  • *
  • Posts: 4943
Re: Reason for Lowish Speed. Help?
« Reply #17 on: June 25, 2018, 08:20:06 PM »

It's not DLM that's lowering your SNRM. If you look at the end of the line stats which you posted, the uptime was nearly 12 days. When DLM lowers the target SNRM, the connection drops and reconnects. Also, the connection speed will have remained the same over that nearly 12 days, so when you say that the speed dropped I presume you're referring to the download speed as measured using a speedtester? That will be due to some other cause.

Great point from roseway ..... and just for info (as the G.fast tech rolls out) ..... we won't be seeing a retrain event from DLM interaction as it uses SRA and FRA (Seamless + Fast Rate Adaption).

I'm sure I've read somewhere that the boffins are toying with SRA on FTTC products, but not sure where, or if I've actually just made that up ??  ;D

Logged

flood

  • Just arrived
  • *
  • Posts: 14
Re: Reason for Lowish Speed. Help?
« Reply #18 on: June 25, 2018, 09:18:00 PM »

It's not DLM that's lowering your SNRM. If you look at the end of the line stats which you posted, the uptime was nearly 12 days. When DLM lowers the target SNRM, the connection drops and reconnects. Also, the connection speed will have remained the same over that nearly 12 days, so when you say that the speed dropped I presume you're referring to the download speed as measured using a speedtester? That will be due to some other cause.

Okay, but do you know why I get lower speed at 3.0 snrm as opposed to 3.3 or 3.2? I thought my max speed would increase when my snrm is lower :/

Here at 5.9 US my max us has decreased as an example
Code: [Select]
xdslcmd info --stats
xdslcmd: ADSL driver and PHY status
Status: Showtime
Retrain Reason: 1
Last initialization procedure status: 0
Max: Upstream rate = 9583 Kbps, Downstream rate = 51716 Kbps
Bearer: 0, Upstream rate = 9773 Kbps, Downstream rate = 53073 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): 3.0 5.9
Attn(dB): 18.6 0.0
Pwr(dBm): 13.9 7.4
VDSL2 framing
Bearer 0
MSGc: -6 26
B: 227 237
M: 1 1
T: 0 34
R: 12 16
S: 0.1366 0.7732
L: 14052 2628
D: 4 1
I: 240 127
N: 240 254
Q: 4 0
V: 0 0
RxQueue: 128 0
TxQueue: 32 0
G.INP Framing: 18 0
G.INP lookback: 31 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 244572
OHFErr: 0 127
RS: 4120342116 2423789
RSCorr: 6161150 14536
RSUnCorr: 0 0
Bearer 1
OHF: 63813354 0
OHFErr: 0 0
RS: 510506334 0
RSCorr: 383 0
RSUnCorr: 0 0

Retransmit Counters
rtx_tx: 311022 0
rtx_c: 14262 0
rtx_uc: 69054 0

G.INP Counters
LEFTRS: 11 0
minEFTR: 53060 0
errFreeBits: 923231261 0

Bearer 0
HEC: 0 0
OCD: 0 0
LCD: 0 0
Total Cells: 1536143139 0
Data Cells: 2083068901 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: 11 150
SES: 11 0
UAS: 58 47
AS: 1025018

Bearer 0
INP: 51.00 0.00
INPRein: 1.00 0.00
delay: 0 0
PER: 0.00 6.59
OR: 0.01 38.79
AgR: 53189.82 9811.50

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: 289229/289229 7996/7996

Total time = 1 days 13 hours 53 min 51 sec
FEC: 6176927 14595
CRC: 591 150
ES: 11 150
SES: 11 0
UAS: 58 47
LOS: 1 0
LOF: 10 0
LOM: 0 0
Latest 15 minutes time = 8 min 51 sec
FEC: 3288 0
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: 5158 2
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 = 13 hours 53 min 51 sec
FEC: 348417 19
CRC: 0 4
ES: 0 4
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Previous 1 day time = 24 hours 0 sec
FEC: 698943 7186
CRC: 0 8
ES: 0 8
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
Since Link time = 11 days 20 hours 43 min 37 sec
FEC: 6161150 14536
CRC: 0 127
ES: 0 126
SES: 0 0
UAS: 0 0
LOS: 0 0
LOF: 0 0
LOM: 0 0
#
« Last Edit: June 25, 2018, 09:20:49 PM by flood »
Logged

roseway

  • Administrator
  • Senior Kitizen
  • *
  • Posts: 39445
  • Penguins CAN fly
    • DSLstats
Re: Reason for Lowish Speed. Help?
« Reply #19 on: June 25, 2018, 10:43:20 PM »

I see, you're talking about the maximum attainable speed (shown as 'Max'). This is calculated by the modem, based on the current conditions. I don't know exactly how it does the calculation, but it's an estimate, not an absolute figure.
Logged
  Eric

RealAleMadrid

  • Member
  • **
  • Posts: 90
Re: Reason for Lowish Speed. Help?
« Reply #20 on: June 25, 2018, 11:07:08 PM »

The max attainable is also rather meaningless as in many cases the actual sync rate can be higher than the calculated value, particularly if G.Inp is active. I generally do not take much notice of it.
Logged

flood

  • Just arrived
  • *
  • Posts: 14
Re: Reason for Lowish Speed. Help?
« Reply #21 on: June 25, 2018, 11:11:04 PM »

Fair enough, it's only a difference of 1mb anyways, I was just curious.
Logged
Pages: 1 [2]
 

anything