perfSONAR User Q&A and Other Discussion

[Szymon Trocha <>]

Hi Tadeja,

The behaviour you see may be a result of changes introduced in 4.2 related to priorities configuration. The default configuration provided then gave higher priority to runs of tasks that originate on the local system and then some other on the receiving end could be preempted.  That changed in 4.2.1. Did you modify limits configuration to use priorities section in /etc/pscheduler/limits.conf ?

Szymon

W dniu 05.11.2019 o 09:00, Tadeja Saje pisze:

Hello.
We deployed a perfSONAR testpoints.. Two(mp-tpl-pf2.arnes.si) of them with http://software.internet2.edu/rpms/el7/x86_64/main/RPMS/perfSONAR-repo-0.8-1.noarch.rpm and then upgraded http://software.internet2.edu/rpms/el7/x86_64/main/RPMS/perfSONAR-repo-0.9-1.noarch.rpm. This works ok. Two of them we(mp-ijs-pf1.arnes.si) installed with http://software.internet2.edu/rpms/el7/x86_64/main/RPMS/perfSONAR-repo-0.9-1.noarch.rpm. we cannot perform measurements to testpoints installed with http://software.internet2.edu/rpms/el7/x86_64/main/RPMS/perfSONAR-repo-0.9-1.noarch.rpm.
My debugging:

not working testpoint:

[root@mp-tpl-pf2 ~]# pscheduler task throughput --duration PT5S --source mp-tpl-pf2.arnes.si --ip-version 4 --destination mp-ijs-pf1.arnes.si
Submitting task...
Task URL:
https://mp-tpl-pf2.arnes.si/pscheduler/tasks/74612031-852c-4232-a478-e861a4b78403
Running with tool 'iperf3'
Fetching first run...

Next scheduled run:
https://mp-tpl-pf2.arnes.si/pscheduler/tasks/74612031-852c-4232-a478-e861a4b78403/runs/04dc7c76-acd5-42d7-9198-bbc02e6d3eec
Starts 2019-11-05T08:43:53+01 (~7 seconds)
Ends   2019-11-05T08:44:07+01 (~13 seconds)
Waiting for result...

Run did not complete: Failed

Limit system diagnostics for this run:

  Hints:
    requester: 2001:1470:8000:709::2
    server: 2001:1470:8000:709::2
  Identified as everybody, local-interfaces
  Classified as default, friendlies
  Application: Hosts we trust to do everything
    Group 1: Limit 'always' passed
    Group 1: Want all, 1/1 passed, 0/1 failed: PASS
    Application PASSES
  Application: Defaults applied to non-friendly hosts
    Group 1: Limit 'innocuous-tests' failed: Passed but inverted
    Group 1: Limit 'throughput-default-time' passed
    Group 1: Limit 'idleex-default' failed: Test is not 'idleex'
    Group 1: Want any, 1/3 passed, 2/3 failed: PASS
    Application PASSES
  Proposal meets limits
  Priority set to default of 0


Diagnostics from mp-tpl-pf2.arnes.si:
  /usr/bin/iperf3 -p 5201 -4 -B mp-tpl-pf2.arnes.si -c mp-ijs-pf1.arnes.si -t 5 --json

Error from mp-tpl-pf2.arnes.si:
  iperf3 returned an error: error - unable to connect to server: Connection refused

Diagnostics from mp-ijs-pf1.arnes.si:
  Run was preempted.

Error from mp-ijs-pf1.arnes.si:
  No error.

No further runs schedule
[root@mp-ijs-pf1 ~]# netstat -ltpn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name   
tcp        0      0 127.0.0.1:11211         0.0.0.0:*               LISTEN      1318/memcached     
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1332/sshd          
tcp        0      0 127.0.0.1:5432          0.0.0.0:*               LISTEN      1356/postgres      
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      1989/master        
tcp6       0      0 :::443                  :::*                    LISTEN      1320/httpd         
tcp6       0      0 :::861                  :::*                    LISTEN      1379/owampd        
tcp6       0      0 :::862                  :::*                    LISTEN      1384/twampd        
tcp6       0      0 ::1:11211               :::*                    LISTEN      1318/memcached     
tcp6       0      0 :::80                   :::*                    LISTEN      1320/httpd         
tcp6       0      0 :::22                   :::*                    LISTEN      1332/sshd          
tcp6       0      0 ::1:5432                :::*                    LISTEN      1356/postgres      
tcp6       0      0 ::1:25                  :::*                    LISTEN      1989/master        
[root@mp-ijs-pf1 ~]#



working testpoints:

[root@mp-ijs-pf1 ~]#  pscheduler task throughput --duration PT5S --dest mp-tpl-pf2.arnes.si --ip-version 4 --source mp-ijs-pf1.arnes.si
Submitting task...
Task URL:
https://mp-ijs-pf1.arnes.si/pscheduler/tasks/0cc7981a-507f-40da-bbd6-ff4e0339aaf1
Running with tool 'iperf3'
Fetching first run...

Next scheduled run:
https://mp-ijs-pf1.arnes.si/pscheduler/tasks/0cc7981a-507f-40da-bbd6-ff4e0339aaf1/runs/a2 to deploy a perfSONAR testpoint -bff1c3-6170-4e75-bc49-27c8b0970ff8
Starts 2019-11-05T08:22:54+01 (~7 seconds)
Ends   2019-11-05T08:23:08+01 (~13 seconds)
Waiting for result...

* Stream ID 5
Interval       Throughput     Retransmits    Current Window
0.0 - 1.0      4.13 Gbps      30             199.82 KBytes 
1.0 - 2.0      5.98 Gbps      14             320.01 KBytes 
2.0 - 3.0      4.17 Gbps      13             415.58 KBytes 
3.0 - 4.0      2.03 Gbps      6              196.93 KBytes 
4.0 - 5.0      2.26 Gbps      7              430.06 KBytes 

Summary
Interval       Throughput     Retransmits   
0.0 - 5.0      3.71 Gbps      70


[root@mp-tpl-pf2 ~]# netstat -lptn
Active Internet connections (only servers)
Proto Recv-Q Send-Q Local Address           Foreign Address         State       PID/Program name   
tcp        0      0 127.0.0.1:5432          0.0.0.0:*               LISTEN      3133/postgres      
tcp        0      0 127.0.0.1:25            0.0.0.0:*               LISTEN      2145/master        
tcp        0      0 127.0.0.1:11211         0.0.0.0:*               LISTEN      1568/memcached     
tcp        0      0 0.0.0.0:22              0.0.0.0:*               LISTEN      1560/sshd          
tcp6       0      0 ::1:5432                :::*                    LISTEN      3133/postgres      
tcp6       0      0 ::1:25                  :::*                    LISTEN      2145/master        
tcp6       0      0 :::443                  :::*                    LISTEN      515/httpd          
tcp6       0      0 :::861                  :::*                    LISTEN      10844/owampd       
tcp6       0      0 :::862                  :::*                    LISTEN      29391/twampd       
tcp6       0      0 ::1:11211               :::*                    LISTEN      1568/memcached     
tcp6       0      0 :::80                   :::*                    LISTEN      515/httpd          
tcp6       0      0 :::22                   :::*                    LISTEN      1560/sshd          
[root@mp-tpl-pf2 ~]#

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Szymon Trocha
Poznań Supercomputing & Networking Center
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