I retrieved the following from the Cacti FlowView Summary screen.  I put in the 
timeframe going from 14:00 to 14:05 today.

Total Flows                          27,611
Total Packets                        5,851,868
Duration of data (realtime)          343
Average flow time (1/1000 secs)      315,311,552
Average flow size (octets)           129,865
Average flows / second (flow)        28
Average Kbits / second (flow)        29,391
Total Octets                         3,585,696,719
Total Time (1/1000 secs) (flows)     8,706,066,882,992
Duration of data (1/1000 secs)       976,000
Average packet size (octets)         613
Average packets per flow              212
Average flows / second (real)        80
Average Kbits / second (real)        83,631


Michael Pollock
Systems Engineer

[Description: Description: Description: Description: 
http://www.possiblenow.com/styleguide/images/pn_corporate_signature.gif]
4400 River Green Parkway, Suite 100
Duluth, GA 30096

Mobile: 678-520-0672
[email protected]<mailto:[email protected]>
www.possiblenow.com<http://www.possiblenow.com/>

From: [email protected] 
[mailto:[email protected]] On Behalf Of Michael Pollock
Sent: Monday, October 13, 2014 5:07 PM
To: [email protected]
Cc: Lorenzo Mangani
Subject: Re: [Ntop] How to reduce size of historical interface database

How could I determine that?  Do I need to enable the historical interface 
temporarily?

I added the Cacti FlowView plugin as another destination from nProbe (along 
with -a so both tools get all the data) and I can get the data from there, but 
I'd prefer a more user-friendly interface like ntopng for others to be able to 
view the data.


Michael Pollock
Systems Engineer

[Description: Description: Description: Description: 
http://www.possiblenow.com/styleguide/images/pn_corporate_signature.gif]
4400 River Green Parkway, Suite 100
Duluth, GA 30096

Mobile: 678-520-0672
[email protected]<mailto:[email protected]>
www.possiblenow.com<http://www.possiblenow.com/>

From: 
[email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Luca Deri
Sent: Monday, October 13, 2014 2:59 PM
To: [email protected]<mailto:[email protected]>
Cc: Lorenzo Mangani
Subject: Re: [Ntop] How to reduce size of historical interface database

Michael,
just to size the problem, how many flows ntopng generates every 5 minutes?

What you are asking is close to what we had in mind. i think that with some 
further iteration we can come up with a precise list of requirements

Cheers Luca

On 13 Oct 2014, at 18:22, Michael Pollock 
<[email protected]<mailto:[email protected]>> wrote:

Say I click on the interface (tcp://*:5556).  If I then click the tab for 
"historical activity", I see a graph of how much was being used over a period 
of time, which is what I expect.  But next to that is "Protocols".  I'd love to 
keep that data somehow, too.  Also, you added a magnifying glass next to each 
protocol.  If I click that, I only get taken to "active flows".  I have some 
that have many TB of data over time. I'd like to be able to go back and see 
what was using that data and when.

For example, we have a minor bit of slowness in our development network around 
2:00pm every day.  I can't figure out exactly how to find what was using all 
the bandwidth during that time without using a historical interface, but 
unfortunately that takes up so much data that it's basically unusable for me.

Thanks!


Michael Pollock
Systems Engineer

<image001.gif>
4400 River Green Parkway, Suite 100
Duluth, GA 30096

Mobile: 678-520-0672
[email protected]<mailto:[email protected]>
www.possiblenow.com<http://www.possiblenow.com/>

From: 
[email protected]<mailto:[email protected]> 
[mailto:[email protected]] On Behalf Of Luca Deri
Sent: Monday, October 13, 2014 7:16 AM
To: [email protected]<mailto:[email protected]>
Subject: Re: [Ntop] How to reduce size of historical interface database

Michael,
if you have this traffic increase then you have a lot of traffic to monitor. is 
this the case? What would you like to save exactly?

We have started to add ElasticSearch support in ntopng, and this is another 
option to use instead of SQlite. But all these are experiments until we find a 
solution we like.

Does anyone has a suggestion perhaps?

Regards Luca

On 10/10/2014 05:44 PM, Michael Pollock wrote:
I enabled the historical interface, but the database was growing at about 1 GB 
every 5 minutes.  Is there any way to reduce this?

It looks like SQLite (which I am not familiar with, unfortunately) is just a 
series of plain text files.  Is there any way to compress this or just store 
the overall usage data?  Without historical data, this utility isn't nearly as 
useful.

Thanks for anyone who can offer a suggestion!


Michael Pollock
Systems Engineer

<image001.gif>
4400 River Green Parkway, Suite 100
Duluth, GA 30096

Mobile: 678-520-0672
[email protected]<mailto:[email protected]>
www.possiblenow.com<http://www.possiblenow.com/>


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