[Spread-users] Spread Retransmission Help

Yair Amir yairamir at cs.jhu.edu
Mon Oct 7 11:19:31 EDT 2013


Better yet, btw - is that you can use a multicast
address and avoid spamming your network - something like 225.1.2.3

Cheers,

	:) Yair.

On 10/7/13 11:17 AM, Yair Amir wrote:
> I would think so.
>
> To me, it would be more natural that 10.151.140.255 would be the correct broadcast address.
>
> You can build spsend and sprecv and verify what really works on your network using these programs.
>
> Cheers,
>
> 	:) Yair.
>
> On 10/7/13 11:02 AM, Lane Matthew wrote:
>> Thanks.
>>
>> I thought this too so I verified the broadcast address using the IP and subnet mask. Subnet Mask=255.255.254.0 for all servers. Looking online, 10.151.141.255 is the network broadcast address for this subnet. Have I misunderstood something in the setup?
>>
>> Thanks
>>
>> Matthew Lane
>> +44 7595 020684
>> ETS Environments and Release
>>
>> 111 Buckingham Palace Road
>> London
>>
>> Guimardstraat 1A, rue Guimard
>> BE-1040 Brussel/Bruxelles
>>
>> Visit our website : www.eni.com/be
>> before printing this message, think about the environment
>>
>>
>> -----Original Message-----
>> From: John Schultz [mailto:jschultz at spreadconcepts.com]
>> Sent: 07 October 2013 15:49
>> To: Lane Matthew
>> Cc: spread-users at lists.spread.org
>> Subject: Re: [Spread-users] Spread Retransmission Help
>>
>> I think your network addresses are wrong.
>>
>> Your segment broadcast address is 10.151.141.255 while your machines are sitting in the 10.151.140 network.  That probably isn't right, so your segment address probably isn't working at all and Spread is working hard to overcome that.
>>
>> Cheers!
>>
>> -----
>> John Lane Schultz
>> Spread Concepts LLC
>> Cell: 443 838 2200
>>
>> On Oct 7, 2013, at 10:38 AM, Lane Matthew wrote:
>>
>> Hi,
>>
>> Whilst looking at the spread logs; I noticed verion high retans numbers. Is this expected or does it suggest I have a problem? If the latter; how would you suggest I could go about indentifying what the problem could be?
>>
>>
>> Config
>>
>> Spread_Segment  10.151.141.255:14803  {
>>           SERVER1 10.151.140.236
>>           SERVER2 10.151.140.237
>>           SERVER3 10.151.140.234
>>           SERVER4 10.151.140.235
>> }
>> Spread Logs
>> ============================
>> Status at SERVER4 V 4.00. 0 (state 1, gstate 1) after 4641117 seconds :
>> Membership  :  4  procs in 1 segments, leader is SERVER1
>> rounds   : 24279316     tok_hurry : 19921464    memb change:      21
>> sent pack: 24535749     recv pack : 77414263    retrans    : 8423199
>> u retrans: 6694629      s retrans : 1728570     b retrans  :       0
>> My_aru   : 15433449     Aru       : 15433449    Highest seq: 15433449
>> Sessions :     116      Groups    :    1977     Window     :      60
>> Deliver M: 57102298     Deliver Pk: 89528715    Pers Window:      15
>> Delta Mes:    1233      Delta Pack:     215     Delta sec  :      25
>> ==================================
>>
>> Monitor>
>> ============================
>> Status at SERVER3 V 4.00. 0 (state 1, gstate 1) after 2659181 seconds :
>> Membership  :  4  procs in 1 segments, leader is SERVER1
>> rounds   : 24279315     tok_hurry : 11045561    memb change:      14
>> sent pack: 13845399     recv pack : 40335734    retrans    : 2957258
>> u retrans: 1117748      s retrans : 1839510     b retrans  :       0
>> My_aru   : 15433449     Aru       : 15433449    Highest seq: 15433449
>> Sessions :      53      Groups    :    1977     Window     :      60
>> Deliver M: 29916378     Deliver Pk: 47580732    Pers Window:      15
>> Delta Mes: -27185920    Delta Pack:       0     Delta sec  : -1981936
>> ==================================
>>
>> Monitor>
>> ============================
>> Status at SERVER1 V 4.00. 0 (state 1, gstate 1) after 3822591 seconds :
>> Membership  :  4  procs in 1 segments, leader is SERVER1
>> rounds   : 24279316     tok_hurry : 18360366    memb change:      14
>> sent pack: 14094574     recv pack : 72830765    retrans    : 6315107
>> u retrans: 3723218      s retrans : 2591889     b retrans  :       0
>> My_aru   : 15433449     Aru       : 15433449    Highest seq: 15433449
>> Sessions :      81      Groups    :    1977     Window     :      60
>> Deliver M: 47437911     Deliver Pk: 74928112    Pers Window:      15
>> Delta Mes: 17521533     Delta Pack:       0     Delta sec  : 1163410
>> ==================================
>>
>> Monitor>
>> ============================
>> Status at SERVER2 V 4.00. 0 (state 1, gstate 1) after 4641102 seconds :
>> Membership  :  4  procs in 1 segments, leader is SERVER1
>> rounds   : 24279315     tok_hurry : 19920799    memb change:      16
>> sent pack: 16699063     recv pack : 81794705    retrans    : 10967659
>> u retrans: 7755320      s retrans : 3212339     b retrans  :       0
>> My_aru   : 15433449     Aru       : 15433449    Highest seq: 15433449
>> Sessions :      72      Groups    :    1977     Window     :      60
>> Deliver M: 57101208     Deliver Pk: 89523128    Pers Window:      15
>> Delta Mes: 9663297      Delta Pack:       0     Delta sec  :  818511
>> ==================================
>>
>>
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