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telnet and atf very slow
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milton   Offline
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telnet and atf very slow
Sep 10th, 2019 at 2:32pm
 
Hello all,
Where can I look to see what is causing the TCP connections to/from the EIU to be very slow.
ATF is timing out trying to send files and the telnet sessions are pretty slow, like 9600 bps slow.
I did find some ITN logs that shows lots of ;

"ITN205 SEP10 12:05:25 6700 INFO Retransmit timeout to remote TCP peer"

but don't know where else to look to see where the problem is.

The IT dept claims the network is trouble free and not logging any errors that would cause the TCP connections on the DMS to run so slow.

It's a little bit difficult because I provide remote support and they only have a single EIU.

Thank you
 
 
 
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1palm   Offline
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Re: telnet and atf very slow
Reply #1 - Sep 10th, 2019 at 3:38pm
 
Not sure but might the NETMAN  facility provide any clues?
Caution x2 if considering the use of "free" it can knock out FTP users, etc.

CI:
>netman
NETMAN>
>print netmandir
DISP                  Temp command  Copy    08E0 08D1
FREE                  Temp command  Copy    0F60 08D1
QUIT                  Temp command  Copy    BDA4 05A2
HELP                  Temp command  Copy    1088 08D1
LOOKUP                Temp command  Copy    1440 08D1
DNS                   Temp command  Copy    0A08 08D1
TRANSLATE             Temp command  Copy    1EE0 08D1
>disp tcp
Id Rcv-Q Snd-Q Local Address   LPort Remote Address  RPort State       Owner
-- ----- ----- --------------- ----- --------------- ----- ----------- --------
0     0     0   0.  0.  0.  0  1024   0.  0.  0.  0     0 LISTENING   DMSFTS
1     0     0 192.168.210. 10  1023   0.  0.  0.  0     0 LISTENING   ESRMAUD
2     0     0   0.  0.  0.  0  2700   0.  0.  0.  0     0 LISTENING   MISTCPSV
3     0     0   0.  0.  0.  0  1025   0.  0.  0.  0     0 LISTENING   RPMNSRV1
4     0     0 192.168.210. 10    23 192.168.178.137 59046 ESTABLISHED TELNSERV
5     0     0   0.  0.  0.  0  2500   0.  0.  0.  0     0 LISTENING   CCTCPSVR
6     0     0 192.168.210. 10    23 172. 27.  1. 30 35960 ESTABLISHED TELNSERV
7     0     0 192.168.210. 10    23 192.168.158.127 50404 ESTABLISHED TELNSERV
8     0     0 192.168.210. 10    23 172. 27.  1. 30 35957 ESTABLISHED TELNSERV
9     0     0 192.168.210. 10    23 192.168.190.143 54545 ESTABLISHED TELNSERV
10     0     0   0.  0.  0.  0  1026   0.  0.  0.  0     0 LISTENING   RPBKSRV1
11     0     0 192.168.210. 10    23 192.168.190. 19 50527 ESTABLISHED TELNSERV
12     0   802 192.168.210. 10    23 192.168.178.134 55134 ESTABLISHED TELNSERV
13     0     0 192.168.210. 10    23 192.168.190. 32 63103 ESTABLISHED TELNSERV
14     0     0 192.168.210. 10  2813 192.168.132.  1 51486 ABORTED     FXRSVPR
15     0     0 192.168.210. 10    23 192.168.190. 11 65509 ESTABLISHED TELNSERV
16     0     0   0.  0.  0.  0    23   0.  0.  0.  0     0 LISTENING   TELNSERV
17     0     0 192.168.210. 10    23 192.168.190.165 61315 ESTABLISHED TELNSERV
18     0     0   0.  0.  0.  0    21   0.  0.  0.  0     0 LISTENING   FXRSVPR
>
 
 
 
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mountain   Offline
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Re: telnet and atf very slow
Reply #2 - Sep 10th, 2019 at 3:48pm
 
I suspect your problem is IT related.  There are two DMS tools you may want to explore.  One is a ping utility and the other is an IP trace utility.  I can't remember the name to the tools.  The IP trace tool may provide information on delays between hop.  1palm may know the name of the tools.
 
 
 
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mountain   Offline
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Re: telnet and atf very slow
Reply #3 - Sep 10th, 2019 at 4:07pm
 
Found the names of the tools:

IPRTRACE : IP trace route tool
SNPINGCI - ping utility
 
 
 
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milton   Offline
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Re: telnet and atf very slow
Reply #4 - Sep 10th, 2019 at 5:13pm
 
thank you Mountain, I'll try that IPRTRACE tool and see if I can a better idea of where the congestion is
 
 
 
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milton   Offline
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Re: telnet and atf very slow
Reply #5 - Sep 10th, 2019 at 7:31pm
 
I got the trace to work but the result does not help isolating the issue.

I went to the IPOMSCI level and ran several display om group commands but cannot find any explanations for the OM buffers.

IPOMSCI - Subcommands:

  IPDISPLAY/IPD  - Display information about an OM group
  IPCLEAR/IPC    - Set all OMs for an OM group to zero
  HELP           - Display this information
  QUIT/EXIT      - Exit from IPOMSCI increment

>ipd
Next par is: <Group ID> {IPT,
                         ARP,
                         IP,
                         UDP,
                         ICMP,
                         TCP,
                         BOOTP,
                         SNAP}
Enter: <Group ID>  [<Format >]  [<Clear  >]
>ip

IP OM Group:  Internet Protocol (IP)

  333592984 = TotIPRx    333592984 = IPPrcRcv           0 = RxBadHdr 
          0 = RxBadAdr           0 = RxForwd            0 = RxBadULP 
          0 = RxBadBuf           0 = RxULP^Mh           0 = RxScrnd   
          0 = RxIP^Rdy   333592984 = RxDlvdOK   342917098 = TotIPTx   
          0 = TxBadBuf           1 = TxIP^Rdy           0 = TxNoRout 
         74 = TxErrors           0 = TxScrnd            0 = ReasmRqd 
          0 = ReasmOKs           0 = ReasmFl            0 = FragOks   
          0 = FragFls            0 = FragCret   342917023 = IPTxGNI   
          0 = IPFwdGNI           0 = IPClsFl            0 = IPNetFl   
          0 = IPSubFl            0 = RtrIdFl            0 = EqBuf^Ok 
          0 = IPRx^Rdy     1036603 = IPRx^Wak     1171493 = IPRxBrod 
        645 = IPTxBrod 

>ipd tcp

IP OM Group:  Transmission Control Protocol Kernal (TCPKERN)

  752371588 = TCPBRCVD   749606736 = TCPBREAD   330138519 = TCPSRCVD 
  187249858 = TCPSREAD  4015033178 = TCPBWRIT  2664216873 = TCPBXMIT 
  340626602 = TCPSXMIT      979376 = TCPBRXMT        9234 = TCPSRXMT 
       2969 = TCPSOOSR        2117 = TCPSOOSD           0 = TCPACTOP 
    3986849 = TCPPASOP         744 = TCPATTFL      195222 = TCPESTRT 
       4168 = TCPINERR     8220388 = TCPOUTRT 

>ipd udp

IP OM Group:  User Datagram Protocol Kernal (UDPKERN)

    2811183 = InDgrams     9852811 = NoPorts            0 = InErrs   
      39162 = OutDgrms    12663994 = udpRecvd           0 = chkSumEr 
          0 = IBadBuf            0 = NotRdy         39162 = OutReq   
          0 = Out^Rdy            0 = OBadBuf            1 = OutErr   

>ipd ipt

IP OM Group:  IP Throttling Counters

1037675824 = invoked    450169618 = throttle   587506206 = nothrott 
          0 = fl_nilid           0 = fl_bw0             0 = fl_bdbms 
          0 = fl_dumpp           0 = pstartfl   529516182 = pinvoked 
  303733287 = ptimeout   225782895 = pstarted      446042 = pnotime   
  450169618 = psend       77504350 = pthrottl   225782895 = pemptyq
 
 
 
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milton   Offline
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Re: telnet and atf very slow
Reply #6 - Sep 12th, 2019 at 2:07pm
 
None of the tools, logs or om's that I looked at were able to point me in the right direction.

AMA and OCC files were not transferring due to timeouts and were backed up for 3 or 4 days.

so...
I worked with an on-site tech and had him bsy out then remove the EIU from all the relevant tables in reverse sequence and then added the same datafill back in, in the proper sequence.

When the EIU came back into service all of the delay was gone and AFT started to process the backlog of AMA and OCC files.

Still have no idea where or what the problem was but it appears to have been in the DMS and not the network it is connected to.
 
 
 
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1palm   Offline
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Re: telnet and atf very slow
Reply #7 - Sep 12th, 2019 at 2:37pm
 
Good info, thank you for the update.
 
 
 
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