There are several hardware-related issues that can contribute to slow performing Mimics, including:
- Slow server-client network speed—You can use Windows commands to investigate the speed of your server-client connections. In particular, PING allows you to check the speed of communications between the client and server.
You can also use the Windows trace route command (tracert -d) to investigate the path of the data as it is transferred through a network. This is useful for locating the network link that is causing the slow transfer speed.
If you locate a slow connection, the first step you should take is to enable Compression for the Node Cost on the ClearSCADA Client Configuration window (access the ClearSCADA Client Configuration window by double-clicking on the ClearSCADA Client icon in the Windows Control Panel). This should speed up the data transfers between your client PC and the ClearSCADA server.
ATTENTION: If your PC is connected to the server via a Local Area Network, enabling the Compression feature may worsen data transfer speed.
If the server-client network connection is still too slow, you will need to check the network hardware and infrastructure. You should check the latency and available bandwidth. Another factor to consider is that the switches, routers and so on are working correctly and are suitable for the network requirements.
If the server-client connection speed is adequate, you may need to replace the graphics card or processor in your PC (see below).
- Slow graphics card—Replace the graphics card with an up-to-date 3D AGP or PCIe graphics card.
- Non-3D graphics card—Replace the graphics card with an up-to-date 3D AGP or PCIe graphics card.
- PCI graphics card instead of AGP graphics card—Replace the graphics card with an up-to-date 3D AGP or PCIe graphics card.
- Insufficient processing power—You can use Windows Task Manager to examine your CPU usage. On the Processes tab, examine the CPU entry for the SE.Scada.ViewX.exe process. If it is around 98, the Mimic is placing a high demand on the processor.
You will need to upgrade your PC's processor.
- Server is busy—If there is a high demand on the server's processor, the server may be unable to process data requests from your client PC efficiently. You will need to use the Windows Task Manager to investigate the performance of the server.
The server's processor may need to be upgraded.
- Client disk is fragmented—If the cache on your client PC is fragmented, it can cause slow Mimic performance as the Mimic is stored in the cache. We recommend you use Windows to defragment the client's hard disk.