perfSONAR User Q&A and Other Discussion

[Aaron Brown <>]

Hey Ty,

> On Feb 18, 2015, at 11:13 AM, Ty Bell 
> <>
>  wrote:
> 
> Hi Andy and Aaron,
> 
> Has there been any progress on documenting regular_testing.conf?

Unfortunately, not at this moment.

> I’d like to tweak my test, but it’s a bit confusing trying to translate 
> this to bwing/owamp. I’m using the mesh_agent to create a json that my test 
> hosts retrieve, they all have 'force_bwctl_owamp 1’ set in their agent 
> configs.
> 
> <test_spec owamp_test>
>  # Define a test spec for doing jitter, loss and latency testing
>  type              perfsonarbuoy/owamp  # Perform a constant low-bandwidth 
> OWAMP test
>  packet_interval   0.01                 # Send 100 packets every second 
> (i.e. pause 0.01 seconds between each packet)
>  loss_threshold    10                   # Wait no more than 10 seconds for 
> a response
>  session_count     18000                # Refresh the test every half hour 
> (once every 18000 packets)
>  sample_count      300                  # Send results back every 30 
> seconds (once every 300 packets)
>  packet_padding    0                    # The size of the packets (not 
> including the IP/UDP headers)
>  bucket_width      0.001                # The granularity of the 
> measurements
> </test_spec>

You can probably clear out of most of those. The regular testing thing 
currently only usefully supports:

packet_interval
sample_count (if powstream, but really it doesn’t much matter so the defaults 
should be fine)
packet_padding

> The config that ends up on my test hosts has schedule type ‘streaming’, how 
> can I get that to ‘regular_intervals’ and define the interval?

There isn’t currently a way to define an interval test for owamp tests. 
They’re always streaming tests, whether done by powstream or bwping.

Cheers,
Aaron

> 
> Thanks,
> --Ty
> 
>> On Jan 23, 2015, at 10:06 AM, Ty Bell 
>> <>
>>  wrote:
>> 
>> Hi Aaron,,
>> 
>> For now, I’m trying to get regular tests between two hosts but it’s giving 
>> me "bwping: -I: interval too small relative to -t”. I was hoping to see 
>> where I could set the -t option in the config. I just bumped interval up 
>> to 600 and it’s working.
>> 
>> 2015/01/23 14:53:23 (32020) DEBUG> CmdRunner.pm:58 
>> perfSONAR_PS::RegularTesting::Utils::CmdRunner::run - Running command: 
>> /usr/bin/bwping -c 10.234.123.71 -T owamp -I 60 -p -d 
>> /var/lib/perfsonar/regular_testing/bwctl_jB2oV -v -N 100 -l 1000 -i 1.0 
>> --no_endpoint -y R
>> 2015/01/23 14:53:23 (32020) DEBUG> CmdRunner.pm:58 
>> perfSONAR_PS::RegularTesting::Utils::CmdRunner::run - Running command: 
>> /usr/bin/bwping -s 10.234.123.71 -T owamp -I 60 -p -d 
>> /var/lib/perfsonar/regular_testing/bwctl_ITjcN -v -N 100 -l 1000 -i 1.0 
>> --flip --no_endpoint -y R
>> 2015/01/23 14:53:23 (32020) DEBUG> Cmd.pm:130 
>> perfSONAR_PS::RegularTesting::Utils::CmdRunner::Cmd::readlines - Lines: 
>> $VAR1 = [];
>> 2015/01/23 14:53:23 (32020) DEBUG> Cmd.pm:130 
>> perfSONAR_PS::RegularTesting::Utils::CmdRunner::Cmd::readlines - Lines: 
>> $VAR1 = [
>>         'Messages being sent to syslog(user,err)',
>>         'bwping: Server side does not require an endpoint',
>>         'bwping: -I: interval too small relative to -t',
>>         'usage: bwping [arguments]',
>>         '',
>> 
>> <test>
>>   description     bwping/owamp test
>> 
>>   target          10.234.123.71
>> #    target          desk146.internet2.edu
>> #    target          lab234.internet2.edu
>> 
>>   <parameters>
>>       type             bwping/owamp
>>       packet_length      1000
>>       inter_packet_time  1.0
>>   </parameters>
>> 
>>   <schedule>
>>       type       regular_intervals
>>       interval   60
>>   </schedule>
>> </test>
>> 
>> --Ty
>> 
>>> On Jan 23, 2015, at 9:29 AM, Aaron Brown 
>>> <>
>>>  wrote:
>>> 
>>> Hey Ty,
>>> 
>>> In the interim, is there something in particular you’re looking to do?
>>> 
>>> Cheers,
>>> Aaron
>>> 
>>>> On Jan 23, 2015, at 9:27 AM, Andrew Lake 
>>>> <>
>>>>  wrote:
>>>> 
>>>> Hi Ty,
>>>> 
>>>> Unfortunately there isn't. I'll be making documentation pass in roughly 
>>>> the next week or so on that page and others which should add more 
>>>> details and a full listing of options.
>>>> 
>>>> Thanks,
>>>> Andy
>>>> 
>>>> 
>>>> 
>>>> On Jan 23, 2015, at 9:17 AM, Ty Bell 
>>>> <>
>>>>  wrote:
>>>> 
>>>>> Hi All,
>>>>> 
>>>>> I’m setting up a few hosts where I’m only installing bwctld, owampd and 
>>>>> perl-perfSONAR_PS-RegularTesting. The examples in regular_testing.conf 
>>>>> are helpful but I was hoping to customize a bit. The only documentation 
>>>>> I’ve found (http://docs.perfsonar.net/config_regular_testing.html) says 
>>>>> to use the GUI which I don’t have. Is there a doc that I’ve missed?
>>>>> 
>>>>> Thanks!
>>>>> --Ty
>>>>> 
>>>> 
>