Hi,
I believe the same can occur if someone clears the interface statistics on the switch, or resets SNMP.
Also, you can see the same occur if you poll the non-64 bit counters (not sure which ones Observium uses 32/64) and traffic has caused the counter to roll-over during the polling period.
Best,
Robert Williams
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From: observium-bounces@observium.org [mailto:observium-bounces@observium.org] On Behalf Of Bruce-Young Majola Sent: 05 September 2011 10:56 To: Observium Network Observation System Subject: Re: [Observium] huge peaks on interfaces 10-100Gig
Hi,
I have seen this odd behaviour before; I actually still have those spikes on some graphs older then a month. It would be nice to have a button with slots for setting up the various removespikes parameters from within the Graphs View page under Ports in order to remove these spike from the UI rather than the command line. Something like "Remove Spike/s from this graph" button would be a wonderful addition.
Regards, Bruce
-----Original Message----- From: Nikolay Shopik <shopik@inblock.rumailto:Nikolay%20Shopik%20%3cshopik@inblock.ru%3e> Reply-to: Observium Network Observation System observium@observium.org To: Observium Network Observation System <observium@observium.orgmailto:Observium%20Network%20Observation%20System%20%3cobservium@observium.org%3e> Subject: Re: [Observium] huge peaks on interfaces 10-100Gig Date: Mon, 05 Sep 2011 13:27:38 +0400 Mailer: Mozilla/5.0 (X11; Linux i686; rv:6.0.1) Gecko/20110830 Thunderbird/6.0.1
Thanks Tim,
That clear up issue in somewhat, but right now I'm seeing this on device
(Cat3560X to be exactly) which not rebooted in weeks. So this is
something different in my case.
On 05/09/11 13:16, GOLLSCHEWSKY, Tim wrote:
I think this is a common issue with rrdtool and not specific to observium. When you reboot a device all the packet counters reset, since rrdtool is graphing the differences between the counters at each polling interval, you get a huge spike.
Check out removespikes.(pl|php) in the scripts directory, that will help get rid of them.
Cheers,
Tim.
-----Original Message-----
From: observium-bounces@observium.orgmailto:observium-bounces@observium.org [mailto:observium-bounces@observium.org] On Behalf Of Nikolay Shopik
Sent: Monday, 5 September 2011 5:48 PM
To: Observium Network Observation System
Subject: [Observium] huge peaks on interfaces 10-100Gig
We seeing once in while really huge peaks on some devices. In past we
seen such when installing new device or/and doing maintenance on it. So
we just ignore them in past, because they only broke graphs once in time.
Does anyone seeing this too? Basically this looks like huge peak
(10-100G) for about 5-10 min(2 scans).
I've seen this on different devices, but all of them are Cisco afaik.
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