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File Server file access is Slowwwww

By stromn ·
We have a file server using NT 4.0 SP6a. We recently started having problems accessing shared files on this server from all workstations. Files are loading extremely slow. I am running performance monitor and it is showing 100% all the time on server\total files opened. The counters for Server Work Queues\Bytes Trans. per second; Write Oper. per second; write bytes per second; and bytes sent per second are peaking to 100% frequently. I am not sure what these counters are telling me. Can anyone tell me what they mean, and how I should try to alleviate the problem?

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File Server file access is Slowwwww

by maxwell edison In reply to File Server file access i ...

Here's something to look at: Microsoft Knowledge Base Article - Q249799, "Slow Network Performance with Service Pack 4, 5, 6, or 6a".

SYMPTOMS:
Network performance may be sluggish after you apply Windows NT 4.0 Service Pack 4, 5, 6, or 6a.

CAUSE:
A change was made to the Rdr.sys file in Windows NT 4.0 Service Pack 4 to fix an issue with a handle being invalidated when a dismount occurs. This may cause additional network traffic, which may degrade performance.

RESOLUTION:

See link.

http://support.microsoft.com/default.aspx?scid=KB;EN-US;Q249799&

REMOVE SPACES from the pasted URL.

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File Server file access is Slowwwww

by stromn In reply to File Server file access i ...

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File Server file access is Slowwwww

by sgt_shultz In reply to File Server file access i ...

fragmentation on the drive(s)?

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File Server file access is Slowwwww

by stromn In reply to File Server file access i ...

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File Server file access is Slowwwww

by NetTek In reply to File Server file access i ...

Bytes transferred/s - traffic between server and clients
Write operations/s - rate at which the CPU is performing file write operations for clients.
Write bytes/s - # of bytes the CPU is writing to files for clients
Bytes sent/s - # of bytes sent to clients

I suspect you have a PC (or PCs) on your network that is causing the problem.

Have you scanned for viruses on clients and server? If there is no virus, there could be a number of other issues. You may have a rogue PC that is havingproblems communicating with the server. If you do not have a packet sniffer to determine the source, check your switch (if you are using switches instead of hubs). You may be able to tell the source of the traffic from the port that is flashing likecrazy. If all the lights are flashing like crazy, you may have a PC that is broadcasting to the network. You may have to remove the patch cables one at a time until the traffic stops to find the source.

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File Server file access is Slowwwww

by stromn In reply to File Server file access i ...

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File Server file access is Slowwwww

by Dark Force In reply to File Server file access i ...

1. Do you have a virus scanner? If so, is it set to scan all files incoming & outgoing?

2. What happened to the server the week that the slowdown occurred, software installed/updated?

3. How long has the server been online? I hav vound that if I shutdown, power off, and reboot my NT 4.0 servers once a month, it fixes several small problems.

4. If none of these work, I would try a 3rd party disk defragmenter. I use Disk Keeper on several of my servers and workstations. It is scheduled to defragment the drives on the weekends in the middle of the night when nobody is logged in.

Good Luck,
DF

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File Server file access is Slowwwww

by stromn In reply to File Server file access i ...

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File Server file access is Slowwwww

by Cactus Pete In reply to File Server file access i ...

Transfers per second don't peak at 100%, the are on a different scale, hitting a number higher than 100.

How is the memory on that machine? Are you swapping? Does the drive have ample space left?

Does the problem happen on all machines? If not, could the workstation be slow?

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File Server file access is Slowwwww

by stromn In reply to File Server file access i ...

Plenty of memory. Plenty of drive space. Happens on all machines. The problem appears to be in the server.

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