Re: Performance of JPG horrible after recent security updates?
- From: "Ace Fekay [MVP]" <PleaseSubstituteMyActualFirstName&LastNameHere@xxxxxxxxxxx>
- Date: Fri, 23 Dec 2005 16:33:49 -0500
In news:903A6CAD-9CDC-4D88-A018-5EB16B66E58A@xxxxxxxxxxxxx,
John Alexander <JohnAlexander@xxxxxxxxxxxxxxxxxxxxxxxxx> stated, which I
commented on below:
> Hello -
>
> I have a small network, 100MB switched, with 4 nodes. The server is
> Win2003EE, clients are XP Pro.
>
> A couple/three week's ago, when browsing a folder of JPG images,
> performance was zippy. Now, it takes 30 seconds or more for a single
> JPG image to come up (image size averages about 1.4MB). During this
> time, nothing unusual on the server in terms of memory, CPU, or disk.
> And, network utilization stays under 5%.
>
> The same files shared peer-to-peer between the two XP Pro boxes is
> extremely fast (same as before). The same files accessed directly on
> the Windows 2003 console from it's own directory is extremely fast.
> It is only when the files are accessed from XP to 2003, and only
> recently that this started. I used Network Monitor to capture
> packets, and didn't see anything obvious (though I admittedly am not
> an expert at reading packet captures).
>
> Did a recent security patch change TCP Window Size parameters or
> anything similar to cause this performance degradation?
>
> I have seen other reported problems on the Internet reporting JPG
> performance is slow. I believe it has nothing to do with JPG's
> themselves. However, the way that XP caches thumbnails and things
> causes a lot of data transfer over the network (more than say,
> streaming same-size MP3 files). My belief is this is a networking
> issue, independent of file type. But I could be wrong.
>
> Thanks in advance,
>
> /John Alexander
> john at backbaytech dot com
> or via newsgroup. Thanks.
Is this happening on all XP machines?
What was recently installed/altered on the server?
Any Event ID errors on either the clients or server?
Bad port or wire?
See if these help:
You experience slow file server performance and delays occur when you work
with files that are located on a file server
http://support.microsoft.com/?kbid=822219&SD=tech
321098 - Slow network performance occurs if you copy files to a Windows 2000
domain controller:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;321098
321169 - Slow SMB performance when you copy files from Windows XP to a
Windows 2000 domain controller:
http://support.microsoft.com/default.aspx?scid=kb;EN-US;321169
--
Ace
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Ace Fekay, MCSE 2003 & 2000, MCSA 2003 & 2000, MCSE+I, MCT, MVP
Microsoft MVP - Windows Server Directory Services
Microsoft Certified Trainer
Assimilation Imminent. Resistance is Futile.
Infinite Diversities in Infinite Combinations.
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