Locate a network "bottleneck"

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Locate a network "bottleneck"
Document ID : 000-000411 Created:11/19/1999 Last changed on:11/19/1999

Network "bottlenecks" will slowdown the network response and prevent quick program load. A network "bottleneck" results when one or more components fail or are overloaded in the data path from your workstation to the server where the data and programs are installed.

The network data path includes:
Your workstation
The network interface card
The wiring
One or more network hubs or switches
The server's network card
The server I/O (disk) system

Consult with a good network engineer to solve your network throughput problems.

A few hints that may help you isolate the problem:

*- Check the server's % CPU utilization. It should not exceed 50% and should on occasion drop to 5-10%
*- If applicable, defragment your server's hard drive
*- Check the %utilization of each Ethernet segments. The % utilization should not exceed 30% on a steady basis.
*- Use a benchmarking utility to measure the throughput of your workstation. Utilities such as Norton Utilities(R) can measure the throughput of your local and network drives. A good network drive connection at 100Mbps should be able to deliver about 18Mbytes per second for cached reads and about 5MBytes per second for cached writes. 10Mbps networks will be slower. Measure the network throughput when your network is lightly loaded and also when your network is heavily loaded.

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