perfSONAR User Q&A and Other Discussion

[Piotr Pikusa <>]

Hi Ralph!

First of all I apologize you were waiting so much time for an answer. 
Because of some inconsistency in our documentation we could have not 
give you a full information you deserve and we didn't want to give you 
only a partial.
You can find a full answer on your question in pdf attachment. I would 
only add that apart from data that is sent to SQL MA by BWCTL MP you can 
feed 3 additional fields by your own application that can communicate 
with SQL MA by nmwg protocol and fetch the data from these fields. These 
are: throughput, jitter and loss.

Regards
Piot Pikusa

Niederberger, Ralph wrote:
> Dear all,
>
> can someone point me to a document which describes which output value is
> related to which database field within the perfsonar_iperf table of the
> SQL_MA and how those values should be stored within the measurement archive
> (e.g see timeDuration below). 
>
> So e.g. I get:
>
> localhost:~> bwctl -s 'sendhost' -c 'recvhost'
> bwctl: Using tool: iperf
> bwctl: 16 seconds until test results available
>
> RECEIVER START
> bwctl: exec_line: /usr/local/bin/iperf -B 'recvhost' -s -f b -m -p 5001 -t
> 10
> bwctl: start_tool: 3480676446.310642
> ------------------------------------------------------------
> Server listening on TCP port 5001
> Binding to local address 'recvhost'
> TCP window size: 87380 Byte (default)
> ------------------------------------------------------------
> [ 15] local 'recvhost' port 5001 connected with 'sendhost' port 5001
> [ ID] Interval       Transfer     Bandwidth
> [ 15]  0.0-10.0 sec  1164115968 Bytes  929815948 bits/sec
> [ 15] MSS size 1448 bytes (MTU 1500 bytes, ethernet)
> bwctl: stop_exec: 3480676460.822379
>
> RECEIVER END
>
>
> Perfsonar_iperf will have:
>
> Field               Possible_Value
> ========================================
>
> metadataId        = e.g. ID-sendhost-recvhost   
> value               = ???       which value ???
> valueUnits        = ??? bits/sec from Bandwidth ???     
> throughput        = 929815948   
> jitter            = ??? Where do I get this from ???    
> loss              = ??? Where do I get this from ???    
> numBytes          = 1164115968 
>                     (from Transfer)
> numBytesUnits     = Bytes 
>                     (from Transfer)	  
> interv            = 0.0-10.0 sec
>                     (from Interval)     
> time              = ??? I assume, time when measurement took place ???  
> format            = ??? -f b ??? from exec-Line call ???        
> protocol          = TCP 
>                     (from line " Server listening on TCP port 5001")	
> bufferLength      = ??? 1448 or 1500 ??? with our without "bytes" text
> appended 
>                     (from line "[ 15] MSS size 1448 bytes (MTU 1500 bytes,
> Ethernet") 
> windowSize        = 87380       
> windowSizeRequest	= ??? "default" ??? 
>                     ??? 2560000 coming from a line "(WARNING: requested
> 2560000 Byte)" 
>                         after having specified "-w 2500K" and getting only
> 2622142 Bytes ???       
> timeDuration    = ??? -t 10 ??? 10 ??? 10 sec ??? ...   
>                     (from bwctl: exec_line ...)
> Arguments         = ??? "-B 'recvhost' -s -f b -m -p 5001 -t 10" ???
>                     (from bwctl: exec_line ...) 
> Test_session_id   = ???
> Ts                = ??? "2010-04-16 09:42:01" as used in other tables or
> unix timestamp or ... ???
>
>
>
> Best regards
>
> Ralph Niederberger
>
> ***************************************************
>  Ralph Niederberger
>  Juelich Supercomputing Centre
>  Institute for Advanced Simulation
>
>  Phone:  +49 2461 61-4772
>  Fax:    +49 2461 61-6656
>  E-Mail: 
>
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>
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>  John von Neumann Institute for Computing
>  and member of the
>  Gauss Centre for Supercomputing
> ***************************************************
>
>  Forschungszentrum Jülich GmbH
>  52425 Jülich
>
>  Sitz der Gesellschaft: Jülich
>  Eingetragen im Handelsregister des Amtsgerichts Düren Nr. HR B 3498
>  Vorsitzende des Aufsichtsrats: MinDir'in Bärbel Brumme-Bothe
>  Geschäftsführung: Prof. Dr. Achim Bachem (Vorsitzender),
>  Dr. Ulrich Krafft (stellv. Vorsitzender), Prof. Dr.-Ing. Harald Bolt,
>  Prof. Dr. Sebastian M. Schmidt 
>
> ***************************************************
>
>
>         
>

Attachment: BWCTL_MP_data_in_SQL_MA.pdf
Description: Adobe PDF document