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Poor NT Server Performance

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by dwayne.sealy

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I have a problem where DOS and some Windows based applications are performing poorly when run from Windows NT Server 4.0/SP6a.

The applications are written in house in either Clipper (DOS), or Visual FoxPro/ProMatrix (Windows). They are structured so that the individual records in the databases are small files, instead of one large database file.

What is noticeable is that before we migrated to a switched network comprising of Cisco Catalyst 4000 switches running at 100MBps servers and10Mbps desktops, everything appeared to run smoothly!.

Any ideas??

2 replies

by eresquigal

You are giving almost none of the important data (like what was the previous setup in terms of software and LAN connections).
I assume your previous network was Novell, which has very low latency locks. It's kind of a lost cause, your best bet would be to convert the application into a server-hosted database (MS-SQL, DB2, Oracle, Informix, whatever).
You should also benchmark it against a linux-based SAMBA server (low overhead).

by dwayne.sealy

My apologies, and this is where it gets interesting:

The network was previously 100MBps shared running on Bay Networks 10/100 Ethernet hubs, with the PCs and servers set up at 100MBps. The servers were standard Windows NT4.0 build, running file & print, BDC, WINS and DHCP services all out of the same box!!.

The new set up is out of our Head Office, which comprises of a standard Windows NT 4.0 build (from a Ghost image) and each server is separated into roles, i.e. a file/print server is just that; nothing else.

This is why I am so confused, the server is not utilising resources running multiple services, yet the performance is substandard.

Hope this clears it up!

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