[Ntop] NTOP server --> Hardware requirements

[Alvaro Luiz Maia Motta]

Hi folks,

I need to report on a 2 x 2Mbps internet links (busy ones), and have no
clue on what the hardware requirements (CPU, memory, hard drive) are, in
order to have ntop installed.


Any suggestion would be greatly appreciated.


Regards,

AL

[Rivalino Matias Jr.]

Alvaro,

In my experience it depends on the behavior of the traffic (stable, burst,
etc.) you are monitoring.
I had experience on links with this capacity and a stable traffic using a
low-end machine (RAM 512 / CPU 2 Ghz, PCI 3COM ethernet NIC 100 mpbs).
Related to mass storage (HD) all depends on how you are using ntop (ntop
command line switches).

Regards,

Rivalino



-----Mensagem original-----
De: ntop-***@unipi.it [mailto:ntop-***@unipi.it]Em nome de
Alvaro Luiz Maia Motta
Enviada em: segunda-feira, 5 de fevereiro de 2007 16:31
Para: ***@unipi.it
Assunto: [Ntop] NTOP server --> Hardware requirements



Hi folks,

I need to report on a 2 x 2Mbps internet links (busy ones), and have no
clue on what the hardware requirements (CPU, memory, hard drive) are, in
order to have ntop installed.


Any suggestion would be greatly appreciated.


Regards,

AL

[Gary Gatten]

I have a PIII-750 monitoring (2) DS3's using netflow and a mirrored
100Mb Ethernet link at about 40% util. nTop CPU during peak loads is <
50%. Netflow drastically reduces the CPU required for nTop.

Memory depends on the number of hosts you track. I'd say 512MB would be
good to start. nTop for me uses about 370MB total - 250MB resident with
about 3,000 internal hosts and at least that many external / internet
hosts.

Gary


-----Original Message-----
From: ntop-***@unipi.it [mailto:ntop-***@unipi.it] On Behalf Of
Alvaro Luiz Maia Motta
Sent: Monday, February 05, 2007 1:31 PM
To: ***@unipi.it
Subject: [Ntop] NTOP server --> Hardware requirements


Hi folks,

I need to report on a 2 x 2Mbps internet links (busy ones), and have no
clue on what the hardware requirements (CPU, memory, hard drive) are, in
order to have ntop installed.


Any suggestion would be greatly appreciated.


Regards,

AL
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http://listgateway.unipi.it/mailman/listinfo/ntop

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[ram]

Post by Gary Gatten
I have a PIII-750 monitoring (2) DS3's using netflow and a mirrored
100Mb Ethernet link at about 40% util. nTop CPU during peak loads is <
50%. Netflow drastically reduces the CPU required for nTop.
Memory depends on the number of hosts you track. I'd say 512MB would be
good to start. nTop for me uses about 370MB total - 250MB resident with
about 3,000 internal hosts and at least that many external / internet
hosts.
Gary

Hi

how about monitoring 155Mbps traffic

ram

[Gary Gatten]

If you use netflow the PIII-700 would probably still do it and then
some. If you're using libpcap I have no clue. Probably 2GHz or better.
That assumes you actually have 155Mb/s of data throughput - not just
capacity. I'll start monitoring ... four Gig links soon - a total of
about 1Gb of average utilization with bursts of 2 - 3Gb. I'll be
curious to see what happens. There's some tech notes about monitoring
high speed links and tweaks you can do to improve performance.
Apparently you can do 1Gb wirespeed with certain NICS, drivers, and
these tweaks. Check the FAQ's - I don't recall where I saw these notes.



Gary





________________________________

From: ntop-***@unipi.it [mailto:ntop-***@unipi.it] On Behalf Of
ram
Sent: Thursday, February 08, 2007 8:31 AM
To: ***@unipi.it
Subject: Re: [Ntop] NTOP server --> Hardware requirements





On 2/6/07, Gary Gatten <***@waddell.com> wrote:

I have a PIII-750 monitoring (2) DS3's using netflow and a mirrored
100Mb Ethernet link at about 40% util. nTop CPU during peak loads is <
50%. Netflow drastically reduces the CPU required for nTop.

Memory depends on the number of hosts you track. I'd say 512MB would be
good to start. nTop for me uses about 370MB total - 250MB resident with

about 3,000 internal hosts and at least that many external / internet
hosts.

Gary





Hi



how about monitoring 155Mbps traffic



ram





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and may contain information that is privileged and/or confidential.
If you are not the intended recipient, you are hereby notified that
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and its attachments, if any, is strictly prohibited. If you have
received this email in error, please immediately notify the sender by
return email and delete this email from your system."