Manual, FT Sensor, Ethernet Axia
Document #9610-05-Ethernet Axia-05
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12.8 Improving Ethernet Throughput
In an optimum network setup, the sensor’s RDT data arrives at the host computer with no loss of data. If
data samples are lost, consider the following:
12.8.1 Direct Connection between Axia Ethernet and Host
To achieve the best Ethernet performance (and avoiding the loss of data packages), connect the
sensor directly to the host computer. If using a switch, then try to use only one switch between
sensor system and host. Avoid going through several switches or going through a hub.
12.8.2 Choice of Operating System
The Windows operating system periodically performs housekeeping processes that can require a
significant amount of processing power over a short amount of time. During these intervals, a loss
of data can occur because Windows does not treat UDP data with a high enough priority. If a loss of
data is not acceptable for the application, then the use a real-time operating system.
12.8.3 Increasing Operating System Performance
The following items may also help increase the performance of a computer system so that it can
best respond to the Ethernet Axia’s fast data rates:
•
Disable software firewall.
One way to improve the Ethernet performance is not to have any
software firewall activated. In some cases, this may require help from IT personnel.
•
Disable file and printer sharing
. The processes associated what file and printer sharing can
slow down an operating system’s response to Ethernet data and may lead to lost data.
•
Disable unnecessary network services.
Unnecessary network services and protocols can slow
down an operating system’s response to Ethernet data and may lead to lost data.
•
Use an Ethernet traffic snooper.
An Ethernet traffic snooper can detect that there are processes
using up Ethernet bandwidth and potentially slowing down the response of a computer’s
operating system. This is an advanced technique that your IT department may need to perform.
The free software program Wireshark (
) is commonly used for this type of
investigation.
•
Use a dedicated computer
. A dedicated measurement computer isolated from the company
network is not burdened by the company network processes.
12.8.4 Avoid Logging the Host to a Company Network
Being logged onto a network requires the periodic access to the Ethernet interface by processes
other than the measurement application and can lead to loss of UDP packages.
12.8.5 Use a Dedicated Network
Placing the sensor on a dedicated Ethernet network with no other devices on the network, other
than the host computer, removes data collisions and gives the best network performance.