On Apr 11, 2005 7:14 PM, haina tang <[EMAIL PROTECTED]> wrote:
> hi All,
> I use flowscan and flow-tools to analysis our traffic. The traffic from
> one router is about 2Gbps. what kind of machine is needed to monitor the
> traffic?
> Dell xeon 6650 4cpu 8Gmem
> or
> Dell xeon 6650 2cpu 4Gmem
> Can anyone help me with it?
Hello haina,
We process flows from up to 10Gbps with a dual processor PPro 1Ghz w/
1GB of RAM.
The dual xeon configuration should be sufficient if I understand correctly
that you have flows for 2Gbps of bandwidth usage, not 2Gbps of flow
data coming to your analysis machine. However, I suggest that
you get as much RAM as possible. Perhaps, 8GB in the 2 CPU
configuration.
Our bottlenecks are:
- The amount of RAM we have
- The speed of our disks
- The speed of our RAM
We only see 20%-40% CPU usage on the machine when running a
flow-tools analysis. We plan to upgrade our server with more memory.
flow-tools uses mmap to read large files, so more physical memory
will reduce the amount of I/O wait time allowing the process to become
CPU bound rather than I/O bound.
If you do not mind IBM hardware, I recommend e-TechServices.com, Inc.
( http://www.e-techservices.com/ ) We buy our hardware from them, and
they help us with any sizing and configuration questions that we have.
I hope that my message has been helpful.
Thanks,
- VAB
--
V. Alex Brennen [EMAIL PROTECTED]
http://cryptnet.net/people/vab/
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