headers
David Tomic | 1 Sep 2008 09:35
Picon

Graph cropping ... is this possible?

Hi all,

This is something which I've been pondering lately, and I'd just like to 
find out some other peoples opinions/thoughts on it as well.

So ... we can already crop/zoom graphs along the x-axis [time], but I'm 
just wondering whether it's also possible [at least in theory] to do the 
same thing along the y-axis [latency] as well?

It's just that sometimes graphs will have a massive spike in latency, 
but it only last for 1-2 cycles before returning to normal.

IE - A link that normally runs at ~20ms, spikes up to ~2,000ms [for 1-2 
rounds], then returns to ~20ms.

That makes it really hard to see smaller changes in the graphs, because 
they've been compressed so much by that massive spike.

If I had a way of cropping the y-axis though, then that would pretty 
much solve the problem.

So ... thoughts/comments/suggestions anyone?

Regards,
--David

PS - I realise that I can just try cropping the x-axis to remove the 
spike - which is what I'm actually doing at the moment - but that's 
really far from an ideal solution IMHO.
(Continue reading)

Permalink | Reply | 6 comments |
headers
Tobias Oetiker | 1 Sep 2008 09:45
Picon
Gravatar

Re: Graph cropping ... is this possible?

Hi David,

Today David Tomic wrote:

[...]
> So ... we can already crop/zoom graphs along the x-axis [time], but I'm
> just wondering whether it's also possible [at least in theory] to do the
> same thing along the y-axis [latency] as well?
[...]
> So ... thoughts/comments/suggestions anyone?

yes it could be implemented. Its just that I am targeting my next
development evvort in the smokeping area to go for a full rewrite
with an all interactive ajax based frontend which will also have
the ability you are looking for ... but this will be some time off
..

as for a short term solution, this should certainly be hackable ...
the cropping javascript can do vertical as well if stroked the
right way.

cheers
tobi

> Regards,
> --David
>
> PS - I realise that I can just try cropping the x-axis to remove the
> spike - which is what I'm actually doing at the moment - but that's
> really far from an ideal solution IMHO.
(Continue reading)

Permalink | Reply | 5 comments |
headers
Tobias Oetiker | 1 Sep 2008 10:28
Picon
Gravatar

Re: Graph cropping ... is this possible?

Ju,

Today HYUNJU JUNG wrote:

>
>  Hello,
>
>  
>
> Can anyone explain the graph below?  I can't explain Gray Square box.  
>
> I gusee ,
>
>      violet line <===   max 17% Loss
>
>      gray square box <=== RTT of Ping tests  are steady  except  when loss occurs.
>
>
                                                          So
the RTT bounce between  0ms (when loss occurs) and 70ms(steady RTT value)
>
> Am I right ?  if not,  please  reply me.

well the grey box below the graph is an artefact produced by a
error in smokeping ... this has been corrected some time ago.
in any vent you are seeing a log entry where 4 out of 20 pings got
lost and there was some added variability in the response time most
likely in connection with the loss (some pings got through all the
same but where a little delayed) there is rarely a situation where
pings return early.
(Continue reading)

Permalink | Reply | 0 comments |
headers
BREUVART Jean-Jacques | 1 Sep 2008 13:28

Smoketrace Error


Hi,
When I try to lanch a traceroute I receive the following error from IE (6.0):

"Problems with this web page, etc…)
Line: 16844
Char: 9
Error: '$5' is null or not an object
Code: 0
URL: http://127.0.0.1/smokeping/tr.html

Any ideas ?

Thanks.

Jean-Jacques Breuvart

Ce message contient des informations confidentielles protegees par le secret professionnel. Au cas ou il ne vous serait pas destine, nous vous remercions de bien vouloir nous en aviser immediatement et de le supprimer. This e-mail is sent by a law firm and may contain information that is privileged or confidential. If you are not the intended recipient, please delete the e-mail and any attachments and notify us immediately. 
_______________________________________________
smokeping-users mailing list
smokeping-users <at> lists.oetiker.ch
https://lists.oetiker.ch/cgi-bin/listinfo/smokeping-users
Permalink | Reply | 1 comment |
headers
G.W. Haywood | 1 Sep 2008 13:53
Picon
Favicon

Re: Smoketrace Error

Hi there,

On Mon, 1 Sep 2008, BREUVART Jean-Jacques wrote:

> When I try to lanch a traceroute I receive the following error from IE
> (6.0):
>
> "Problems with this web page, etc...)
> Line: 16844
> Char: 9
> Error: '$5' is null or not an object
> Code: 0
> URL: http://127.0.0.1/smokeping/tr.html
>
> Any ideas ?

Your version of traceroute is probably incompatible with Smokeping (or
vice versa:).  I've had similar trouble with other modules.  Check all
the version numbers of the various tools being used, you may need to
upgrade one or more of them.

In general when reporting problems it's a good idea to tell people a
lot more information, like what operating systems you're using, what
versions of the software etc.  The version of the browser isn't much
use to anyone.
Permalink | Reply | 0 comments |
headers
David Tomic | 2 Sep 2008 03:48
Picon

Re: Graph cropping ... is this possible?

Tobias Oetiker wrote:
> yes it could be implemented. Its just that I am targeting my next
> development evvort in the smokeping area to go for a full rewrite
> with an all interactive ajax based frontend which will also have
> the ability you are looking for ... but this will be some time off
> ..
>
> as for a short term solution, this should certainly be hackable ...
> the cropping javascript can do vertical as well if stroked the
> right way.
>
>   
Thanks Tobi ... but that's really waaaaay out of my league to even think 
about doing at the moment! :p

I'll just sit tight and be happy with the fact that it's at least on the 
drawing board for some point in the future.

I don't think that you can really ask for much more than that, 
especially out of 'free' software.

Much appreciated!

Regards,
--David.

_______________________________________________
smokeping-users mailing list
smokeping-users <at> lists.oetiker.ch
https://lists.oetiker.ch/cgi-bin/listinfo/smokeping-users
Permalink | Reply | 1 comment |
headers
Tobias Oetiker | 2 Sep 2008 06:56
Picon
Gravatar

Re: Graph cropping ... is this possible?

Hi David,

Today David Tomic wrote:

[...]
> I don't think that you can really ask for much more than that,
> especially out of 'free' software.

well a fair number of features for smokeping have been implemented
on customer request (and pay) recently. So if you die to have
something and are willing to sponsor development, the options are
wide open.

cheers
tobi

--

-- 
Tobi Oetiker, OETIKER+PARTNER AG, Aarweg 15 CH-4600 Olten, Switzerland
http://it.oetiker.ch tobi <at> oetiker.ch ++41 62 775 9902 / sb: -9900

_______________________________________________
smokeping-users mailing list
smokeping-users <at> lists.oetiker.ch
https://lists.oetiker.ch/cgi-bin/listinfo/smokeping-users
Permalink | Reply | 0 comments |
headers
Westlake, Simon | 4 Sep 2008 21:46

Smokeping graphs randomly stop generating

Hello,

I've recently upgraded my servers to Ubuntu 8 and have been experiencing
a strange problem with Smokeping. I have Smokeping distributed across a
couple of different servers and I'm having the same problem on both
servers. At random intervals (could be hours or days, but is typically
hours) the graphs will just stop generating. The only log messages I
have when they die is 'MARK'. The daemon appears to be running. If I do
an /etc/init.d/smokeping restart, the graphs begin generating again. My
config is fairly basic, I'm only using fping/hping probes.

Any ideas?

simon <at> M2Polling-2:~$ fping -v
fping: Version 2.4b2_to $Date: 2002/01/16 00:33:42 $
fping: comments to david <at> remote.net

simon <at> M2Polling-2:~$ smokeping -v
2.003000
Permalink | Reply | 3 comments |
headers
G.W. Haywood | 5 Sep 2008 08:27
Picon
Favicon

Re: Smokeping graphs randomly stop generating

Hi there,

On Thu, 4 Sep 2008, Westlake, Simon wrote:

> I've recently upgraded my servers to Ubuntu 8 and have been experiencing
> a strange problem with Smokeping. I have Smokeping distributed across a
> couple of different servers and I'm having the same problem on both
> servers. At random intervals (could be hours or days, but is typically
> hours) the graphs will just stop generating. The only log messages I
> have when they die is 'MARK'. The daemon appears to be running. If I do
> an /etc/init.d/smokeping restart, the graphs begin generating again. My
> config is fairly basic, I'm only using fping/hping probes.

It isn't clear to me whether the graphs aren't being generated or the
ping processes aren't pinging.  Perhaps you could investigate further
and let us know what you find.  Have you tried running Smokeping with
the debug option for a few days?  If not I'd recommend it.  I run it
that way routinely, disc space is cheap and you can rotate the logs.

How long had you been running Smokeping before the upgrade to Ubuntu 8
and on what system/distribution?  As you're having the same problem on
both servers, it seems likely that it's, er, a hard software problem
which should be relatively easy to track down.  I'm willing to bet that
it isn't random, we just don't know what events trigger it yet. :)
Permalink | Reply | 1 comment |
headers
Westlake, Simon | 5 Sep 2008 15:12

Re: Smokeping graphs randomly stop generating

> > I've recently upgraded my servers to Ubuntu 8 and have been 
> experiencing
> > a strange problem with Smokeping. I have Smokeping 
> distributed across a
> > couple of different servers and I'm having the same problem on both
> > servers. At random intervals (could be hours or days, but 
> is typically
> > hours) the graphs will just stop generating. The only log messages I
> > have when they die is 'MARK'. The daemon appears to be 
> running. If I do
> > an /etc/init.d/smokeping restart, the graphs begin 
> generating again. My
> > config is fairly basic, I'm only using fping/hping probes.
> 
> It isn't clear to me whether the graphs aren't being generated or the
> ping processes aren't pinging.  Perhaps you could investigate further
> and let us know what you find.  Have you tried running Smokeping with
> the debug option for a few days?  If not I'd recommend it.  I run it
> that way routinely, disc space is cheap and you can rotate the logs.
> 
> How long had you been running Smokeping before the upgrade to Ubuntu 8
> and on what system/distribution?  As you're having the same problem on
> both servers, it seems likely that it's, er, a hard software problem
> which should be relatively easy to track down.  I'm willing 
> to bet that
> it isn't random, we just don't know what events trigger it yet. :)
> 

I suspect you are correct (in terms of the trigger). I set it run as
-debug--daemon today, so I'll see what happens.

I was previously running on Ubuntu 6 with no issues. I don't recall what
the smokeping/fping version was, but it hadn't been updated in some time
(it was pre-AJAX changes.)
This E-mail and any of its attachments may contain Time Warner
Cable proprietary information, which is privileged, confidential,
or subject to copyright belonging to Time Warner Cable. This E-mail
is intended solely for the use of the individual or entity to which
it is addressed. If you are not the intended recipient of this
E-mail, you are hereby notified that any dissemination,
distribution, copying, or action taken in relation to the contents
of and attachments to this E-mail is strictly prohibited and may be
unlawful. If you have received this E-mail in error, please notify
the sender immediately and permanently delete the original and any
copy of this E-mail and any printout.

_______________________________________________
smokeping-users mailing list
smokeping-users <at> lists.oetiker.ch
https://lists.oetiker.ch/cgi-bin/listinfo/smokeping-users
Permalink | Reply | 0 comments |

Gmane