perfSONAR User Q&A and Other Discussion

[Jeremy Palmer <>]

Anyone know if this was ever addressed? I still never see any packet loss stats 
in my PingER test graphs (pS Toolkit 3.3.2).

Jeremy Palmer
Senior Network Engineer
ViaWest, Inc.
Office: 720.891.1045
Fax: 303-874-5236
http://www.viawest.com

On 9/11/2012 6:31 AM, Nils Jacobson wrote:
> Hi Jeremy,
>
> You're right, the loss is not plotted. I'll put an issue in our issue 
> tracker. Our owamp graphs show packet loss, and I confused the two. Thanks 
> for bringing it up.
>
> Thank you,
>
> Nils Jacobson, Network Software Programmer
> Internet2
> 1000 Oakbrook Drive, Suite 300
> Ann Arbor, MI 48104
> office +1-734-352-7033 fax: +1-734-913-4255
>
> Visit our website: www.internet2.edu
> Follow us on Twitter: www.twitter.com/internet2
> Become a Fan on Facebook: www.internet2.edu/facebook
>
>
> ----- Original Message -----
> > From: "Jeremy Palmer" 
> > <>
> > To: "Nils Jacobson" 
> > <>
> > Cc: 
> >
> > Sent: Monday, September 10, 2012 7:12:20 PM
> > Subject: Re: [perf-node-users] How do you view packet loss in PingER (Ping 
> > Latency) graphs?
> >
> > I tried the advice of setting packet size to 1000 in the PingER test
> > but it
> > doesn't make a different. The graph still shows nothing when there is
> > confirmed
> > packet loss.
> >
> > Perhaps I can illustrate the issue better with a screenshot. I setup
> > a PingER
> > test to a target host and let it run for a while. I then disabled
> > ICMP on the
> > host and left it off for about 30 mins (100% ping loss) between 15:53
> > and 16:23.
> > I then re-enabled ping on the host and waited about 10 more mins and
> > then pulled
> > up the Ping Latency graph for "12 hours". The below image is the
> > result:
> >
> > https://dl.dropbox.com/u/1810709/workstuff/pingER%20no%20loss%20stats.jpg
> >
> > See how at about 15:53 when I disabled ping on the target host, the
> > graph
> > basically has no data until about 16:23 when I re-enabled ping on the
> > host. If
> > it were working correctly, I would expect there would be plots for
> > 100% packet
> > loss between 15:53 and 16:23. All this graph shows me is there is no
> > data during
> > that time period.
> >
> > When I manually query the pingerMA database on that toolkit host, I
> > see plenty
> > of results where lossPercent is not 0 so I'm assuming something is
> > broken with
> > the process that is actually generating the graph.
> >
> > I have tired this on two different 3.2.2 PsToolkit hosts too and I
> > get the exact
> > same results on both.
> >
> > Jeremy Palmer
> > Network Engineering
> > ViaWest, Inc.
> > Office: 720.891.1045
> > Fax: 303-874-5236
> > www.viawest.net
> >
> > On 9/7/2012 6:58 AM, Nils Jacobson wrote:
> > > Hi Jeremy,
> > >
> > > Packet loss will be listed to the right of the graph. Try
> > > increasing the size of the test packets to 1000 and let me know if
> > > that helps.
> > >
> > > Thank you,
> > >
> > > Nils Jacobson, Network Software Programmer
> > > Internet2
> > > 1000 Oakbrook Drive, Suite 300
> > > Ann Arbor, MI 48104
> > > office +1-734-352-7033 fax: +1-734-913-4255
> > >
> > > Visit our website: www.internet2.edu
> > > Follow us on Twitter: www.twitter.com/internet2
> > > Become a Fan on Facebook: www.internet2.edu/facebook
> > >
> > >
> > > ----- Original Message -----
> > > > From: "Jeremy Palmer" 
> > > > <>
> > > > To: 
> > > >
> > > > Sent: Thursday, September 6, 2012 1:16:03 PM
> > > > Subject: [perf-node-users] How do you view packet loss in PingER
> > > > (Ping Latency) graphs?
> > > >
> > > > I setup a PingER test on a pSToolkit 3.2.2 box yesterday to
> > > > temporarily monitor
> > > > a customer connection by pinging the router on the far end of the
> > > > circuit. I
> > > > know there is intermittent packet loss on this circuit from time
> > > > to
> > > > time but
> > > > when I click on the "Ping Latency" menu in the toolkit and
> > > > generate a
> > > > Graph for
> > > > this host for the last 24hrs, it doesn't show the packet loss on
> > > > the
> > > > graph. In
> > > > fact, the graph legend at the top only shows "Min Delay", "Median
> > > > Delay", "Mean
> > > > Delay", and "Max Delay" line colors. There is nothing to show
> > > > loss.
> > > >
> > > > I have verified there are test results that contain packet loss in
> > > > the database.
> > > > If I run this SQL query:
> > > > select * from data_201209 where lossPercent!=0
> > > > it returns 1110 rows.
> > > >
> > > > Is there something I need to do to enable packet loss to show on
> > > > the
> > > > PingER Ping
> > > > Latency graphs? I'm not seeing anything in the PingER
> > > > documentation
> > > > related to this.
> > > >
> > > > FYI, my PingER test is setup like so:
> > > >
> > > > Test Parameters
> > > > Description     ping
> > > > Time Between Tests (seconds)    60
> > > > Packets Sent Per Test   30
> > > > Time Between Packets (seconds)  1
> > > > Size Of Test Packets    500
> > > >
> > > > --
> > > > Jeremy Palmer
> > > > Network Engineering
> > > > ViaWest, Inc.
> > > > Office: 720.891.1045
> > > > Fax: 303-874-5236
> > > > www.viawest.net