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Author Topic: "Showtime Count"  (Read 3715 times)

Weaver

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"Showtime Count"
« on: January 19, 2009, 01:26:13 PM »

Looking at the detailed stats of a Netgear DG834v3 (say) with telnet (using the todo=debug trick mentioned elsewhere on this site I noticed that the ShowTime Count was incremented during the session.

Is it the case that the ShowTime count gets incremented as a result of a loss-of-sync event? (Or also because the user orders the router to drop the connection and bring it back up againg using the admin UI)
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Weaver

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Re: "Showtime Count"
« Reply #1 on: January 19, 2009, 01:29:24 PM »

The two sets of stats are below. There is a set of bits-per-bin data which applies to the second state (unfortunately didn't capture it before the state change)

==
DG834v3 telnet session :-

== first set of stats ===

# cat /proc/avalanche/avsar_modem_stats

AR7 DSL Modem Statistics:
--------------------------------
[DSL Modem Stats]
        US Connection Rate:     608     DS Connection Rate:     1856
        DS Line Attenuation:    61      DS Margin:              13
        US Line Attenuation:    31      US Margin:              6
        US Payload :            5332464 DS Payload:             13570464
        US Superframe Cnt :     916361  DS Superframe Cnt:      916361
        US Transmit Power :     0       DS Transmit Power:      0
        LOS errors:             0       SEF errors:             0
        Errored Seconds:        0       Severely Err Secs:      0
        Frame mode:             3       Max Frame mode:         0
        Trained Path:           1       US Peak Cell Rate:      1433
        Trained Mode:           3       Selected Mode:          1
        ATUC Vendor Code:       54535443        ATUC Revision:  2
        Hybrid Selected:        3       Trellis:                1
        Showtime Count:         1       DS Max Attainable Bit Rate: 1856 kbps
        BitSwap:                1       US Max Attainable Bit Rate:     n/a
        Annex:                  AnxA    psd_mask_qualifier: 0x0000
        Power Management Status: L0     DS HLINSC: 0
        US ACTPSD:              -345    DS ACTPSD: -355
        Total init. errors:     0       Total init. timeouts: 0
        Showtime init. errors:  0       Showtime init. timeouts: 0
        Last showtime init. errors: 0   Last showtime init. timeouts: 0
        ATUC ghsVid:  b5 00 54 53 54 43 00 00
        T1413Vid: 00 00         T1413Rev: 00            VendorRev: 00
        ATUR ghsVid:  b5 00 54 53 54 43 00 00
        T1413Vid: 00 00 T1413Rev: 00    VendorRev: 00

        [Upstream (TX) Interleave path]
        CRC:    28      FEC:    11424   NCD:    0
        LCD:    0       HEC:    1904

        [Downstream (RX) Interleave path]
        CRC:    21      FEC:    4717    NCD:    0
        LCD:    0       HEC:    0

        [Upstream (TX) Fast path]
        CRC:    0       FEC:    0       NCD:    1
        LCD:    0       HEC:    0

        [Downstream (RX) Fast path]
        CRC:    0       FEC:    0       NCD:    0
        LCD:    0       HEC:    0

[ATM Stats]
        [Upstream/TX]
        Good Cell Cnt:  111093
        Idle Cell Cnt:  22227367

        Tx Packets Dropped Count:       0
        Tx Bad Packets Count:   0

        [Downstream/RX)]
        Good Cell Cnt:  282718
        Idle Cell Cnt:  67908275
        Bad Hec Cell Cnt:       54
        Overflow Dropped Cell Cnt:      0
        Rx Packets Dropped Count:       0
        Rx Bad Packets Count:   0


[SAR AAL5 Stats]
        Tx PDU's:       17918
        Rx PDU's:       20394
        Tx Total Bytes: 4560039
        Rx Total Bytes: 12946238
        Tx Total Error Counts:  0
        Rx Total Error Counts:  0


[OAM Stats]
        Near End F5 Loop Back Count:    0
        Near End F4 Loop Back Count:    0
        Far End F5 Loop Back Count:     0
        Far End F4 Loop Back Count:     0
        SAR OAM Ping Response Drop Count=0
#

=== second stats ===

# cat /proc/avalanche/avsar_modem_stats

AR7 DSL Modem Statistics:
--------------------------------
[DSL Modem Stats]
        US Connection Rate:     448     DS Connection Rate:     1920
        DS Line Attenuation:    61      DS Margin:              11
        US Line Attenuation:    31      US Margin:              6
        US Payload :            154992  DS Payload:             902976
        US Superframe Cnt :     90443   DS Superframe Cnt:      90443
        US Transmit Power :     0       DS Transmit Power:      0
        LOS errors:             0       SEF errors:             0
        Errored Seconds:        0       Severely Err Secs:      0
        Frame mode:             3       Max Frame mode:         0
        Trained Path:           1       US Peak Cell Rate:      1056
        Trained Mode:           3       Selected Mode:          1
        ATUC Vendor Code:       54535443        ATUC Revision:  2
        Hybrid Selected:        1       Trellis:                1
        Showtime Count:         2       DS Max Attainable Bit Rate: 1920 kbps
        BitSwap:                1       US Max Attainable Bit Rate:     n/a
        Annex:                  AnxA    psd_mask_qualifier: 0x0000
        Power Management Status: L0     DS HLINSC: 0
        US ACTPSD:              -345    DS ACTPSD: -355
        Total init. errors:     0       Total init. timeouts: 0
        Showtime init. errors:  0       Showtime init. timeouts: 0
        Last showtime init. errors: 0   Last showtime init. timeouts: 0
        ATUC ghsVid:  b5 00 54 53 54 43 00 00
        T1413Vid: 00 00         T1413Rev: 00            VendorRev: 00
        ATUR ghsVid:  b5 00 54 53 54 43 00 00
        T1413Vid: 00 00 T1413Rev: 00    VendorRev: 00

        [Upstream (TX) Interleave path]
        CRC:    0       FEC:    179996  NCD:    0
        LCD:    0       HEC:    0

        [Downstream (RX) Interleave path]
        CRC:    0       FEC:    61      NCD:    0
        LCD:    0       HEC:    0

        [Upstream (TX) Fast path]
        CRC:    0       FEC:    0       NCD:    1
        LCD:    0       HEC:    0

        [Downstream (RX) Fast path]
        CRC:    0       FEC:    0       NCD:    0
        LCD:    0       HEC:    0

[ATM Stats]
        [Upstream/TX]
        Good Cell Cnt:  3229
        Idle Cell Cnt:  1621332

        Tx Packets Dropped Count:       0
        Tx Bad Packets Count:   1

        [Downstream/RX)]
        Good Cell Cnt:  18812
        Idle Cell Cnt:  6943548
        Bad Hec Cell Cnt:       0
        Overflow Dropped Cell Cnt:      0
        Rx Packets Dropped Count:       0
        Rx Bad Packets Count:   0


[SAR AAL5 Stats]
        Tx PDU's:       18958
        Rx PDU's:       21644
        Tx Total Bytes: 4670354
        Rx Total Bytes: 13823095
        Tx Total Error Counts:  0
        Rx Total Error Counts:  0


[OAM Stats]
        Near End F5 Loop Back Count:    0
        Near End F4 Loop Back Count:    0
        Far End F5 Loop Back Count:     0
        Far End F4 Loop Back Count:     0
        SAR OAM Ping Response Drop Count=0
#
# bits-per-bin in state 2 (us 448 ds 1920)
# cat /proc/avalanche/avsar_bit_allocation_table

AR7 DSL Modem US Bit Allocation:
00 00 00 00 00 00 00 05 05 05 05 05 05 07 07 07
07 07 07 07 07 07 07 07 07 07 07 07 07 06 04 00

AR7 DSL Modem DS Bit Allocation:
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 07 08 09 09 09 09 09 09 09 09 09 08 09
09 09 09 09 09 08 08 08 08 08 08 08 08 08 08 08
00 08 08 08 08 08 07 07 07 07 07 07 07 07 07 07
07 07 07 07 07 07 07 07 07 06 06 05 05 06 06 06
06 06 05 05 05 05 05 05 05 05 05 05 05 04 04 04
04 04 04 04 04 04 04 04 04 03 03 02 02 02 02 02
02 02 02 02 02 02 02 02 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
#
== end ==
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kitz

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Re: "Showtime Count"
« Reply #2 on: January 19, 2009, 03:55:16 PM »

I could be wrong but afaik showtime is after initialisation which is part of the sync process.

Theres 2 states of connection - syncing to the exchange and then PPP session, the later being out on to the internet via your ISP.

Most routers will record 2 sets of uptime.  The time the router has been up for and the time its held a valid internet PPP session.
Actual uptime displayed as LAN uptime doesnt normally allow for any loss of sync, but the time the router has remained switched on for.
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Ezzer

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Re: "Showtime Count"
« Reply #3 on: January 19, 2009, 07:25:50 PM »

I could be wrong but afaik showtime is after initialisation which is part of the sync process.

Theres 2 states of connection - syncing to the exchange and then PPP session, the later being out on to the internet via your ISP.

Most routers will record 2 sets of uptime.  The time the router has been up for and the time its held a valid internet PPP session.
Actual uptime displayed as LAN uptime doesnt normally allow for any loss of sync, but the time the router has remained switched on for.

On our APtS we get "showtime" once full sync is achived but before the ATM e to e ping, and ppp session. so I would assume this is the same as the counter mentioned
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kitz

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Re: "Showtime Count"
« Reply #4 on: January 20, 2009, 12:16:21 AM »

Thanks ezzer
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Mick

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Re: "Showtime Count"
« Reply #5 on: February 22, 2009, 10:31:06 AM »

I also noticed on a DG834v2 that while the Showtime Count is 2 under modem stats, the modem training results give a showtime of 1 ...  ???

Code: [Select]
# cat /proc/avalanche/avsar_modem_training   
SHOWTIME
1
failTrains=9
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Regards,
Mick