[zeromq-dev] epgm protocol question

Emmanuel TAUREL taurel at esrf.fr
Tue Apr 13 15:44:53 CEST 2010


On 13/04/2010 15:40, Martin Lucina wrote:
> steven.mccoy at miru.hk said:
>    
>> On 13 April 2010 21:30, Martin Lucina<mato at kotelna.sk>  wrote:
>>
>>      In my opinion the correct way to do this is to have OpenPGM
>>      reserve e.g. 5% of the requested data rate for RDATA by default, with the
>>      option to configure the reserved bandwidth amount for those who wish to
>>      shoot themselves in the foot.
>>
>>
>>
>> Unusually SmartPGM is the only implementation I've seen with rate controls and
>> all it has in respect to RDATA vs. ODATA here is to set RDATA to be say maximum
>> 5% of the rate limit - but not to reserve it solely for RDATA.
>>      
> So my reasoning is correct when I say that with the current implementation
> if I set TWX_MAX_RTE to e.g. 100Mbps, then proceed to publish at 100Mbps
> and *any* packet loss occurs, things will break?
>
> -mato
>    
This is exactly what I have noticed on my usage. No RDATA packet

Regards

Emmanuel

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