Re: Slow network performance small files

[Jonathan Link]

Well, I've determined that the problem is caused by Quickbooks versions 2006
and later.
Quickbooks 2006 has no apparent workaround that I can tell (if you know of
one, please feel free to correct me).  QB 2007 and & 2008 have a client only
mode that can be selected at installation and doesn't degrade network
performance, the former IT guy installed QB inconsistently on user's
laptops, so that's why it was masked so well.
Since changing positions from tax department to tax/IT I didn't have as
urgent a need for QB, so never got around to re-installing it, then when
setting up a couple of new computers, I noticed the performance hit after
installing QB 2006.

-Jonathan
On Feb 1, 2008 2:50 PM, Jonathan Link <[EMAIL PROTECTED]> wrote:

>
> My googlefu has failed me.  I've searched for and tested several potential
> solutions to this problem.  Perhaps someone out there can enlighten me.
>
> I have several Windows XP Pro SP2 computers on my network that have poor
> performance when copying small files, and normal performance when copying
> large files.  When I say poor performance, I'm in a 100 Mb
> switched environment and I'm achieving 2 to 4 Mbits/sec copying small
> files.  On other computers, I can copy the same set of files at about
> 20-30Mbits/second. Several is at least 11 out of 50.
>
> Two computers of the same make can perform differently.  A wipe and
> reinstall on my computer brought the speed back to what I would expect, so
> it would seem to be a registry setting.  I'm speculating, because our
> previous sysadmin had a penchant for mucking with the registry to fix any
> little problem and frequenty created more problems in the process.
>
> I've found this article from MS KB, but it didn't address the problem.
> http://support.microsoft.com/kb/321098
>
> Thanks,
> Jonathan
>
>
>
>
>

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RE: Slow network performance small files

[N Parr]

Virus Scan can do that, especially when the files are getting scanned by
both the server and workstation.



From: Jonathan Link [mailto:[EMAIL PROTECTED] 
Sent: Friday, February 01, 2008 1:50 PM
To: NT System Admin Issues
Subject: Slow network performance small files



My googlefu has failed me.  I've searched for and tested several
potential solutions to this problem.  Perhaps someone out there can
enlighten me.
 
I have several Windows XP Pro SP2 computers on my network that have poor
performance when copying small files, and normal performance when
copying large files.  When I say poor performance, I'm in a 100 Mb
switched environment and I'm achieving 2 to 4 Mbits/sec copying small
files.  On other computers, I can copy the same set of files at about
20-30Mbits/second. Several is at least 11 out of 50.
 
Two computers of the same make can perform differently.  A wipe and
reinstall on my computer brought the speed back to what I would expect,
so it would seem to be a registry setting.  I'm speculating, because our
previous sysadmin had a penchant for mucking with the registry to fix
any little problem and frequenty created more problems in the process.
 
I've found this article from MS KB, but it didn't address the problem.
http://support.microsoft.com/kb/321098
 
Thanks,
Jonathan






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Re: Slow network performance small files

[Phil Brutsche]

Um, forcing host (router, server, desektop, whatever) to -full
but not the switch = very very bad

If the switch can't detect the duplex mode supported by it's link
partner it will fall back to half duplex.

I may sound harsh when I say it, but I've told people that if they can't
set the link speed and duplex on the switch they DO NOT *EVER* touch the
speed and link duplex on the host.

If you can't tell already, BTDTGTTS (Been There, Done That, Got The T-Shirt)

Louis, Joe wrote:
> Sounds like difference in MTUs, or it could be auto negotiate settings
> on the NIC. I've had PCs where not forcing to 100-full gets you less;
> even on an autonegotiated switch.

-- 

Phil Brutsche
[EMAIL PROTECTED]

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Re: Slow network performance small files

[Jonathan Link]

Nicely done.

On 2/1/08, Andy Shook <[EMAIL PROTECTED]> wrote:
>
>
>  googlefu = man-part
>
>
>
> Shook
>  --
>
> *From:* Jonathan Link [mailto:[EMAIL PROTECTED]
> *Sent:* Friday, February 01, 2008 2:50 PM
> *To:* NT System Admin Issues
> *Subject:* Slow network performance small files
>
>
>
>
>
> My googlefu has failed me.  I've searched for and tested several potential
> solutions to this problem.  Perhaps someone out there can enlighten me.
>
>
>
> I have several Windows XP Pro SP2 computers on my network that have poor
> performance when copying small files, and normal performance when copying
> large files.  When I say poor performance, I'm in a 100 Mb
> switched environment and I'm achieving 2 to 4 Mbits/sec copying small
> files.  On other computers, I can copy the same set of files at about
> 20-30Mbits/second. Several is at least 11 out of 50.
>
>
>
> Two computers of the same make can perform differently.  A wipe and
> reinstall on my computer brought the speed back to what I would expect, so
> it would seem to be a registry setting.  I'm speculating, because our
> previous sysadmin had a penchant for mucking with the registry to fix any
> little problem and frequenty created more problems in the process.
>
>
>
> I've found this article from MS KB, but it didn't address the problem.
> http://support.microsoft.com/kb/321098
>
>
>
> Thanks,
>
> Jonathan
>
>
>
>
>
>
>
>
>
>
>
>

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Re: Slow network performance small files

[Jonathan Link]

No, I hadn't, because I didn't believe it to be a problem with the disk/file
system.  My machine is defragged fairly regularly as a matter of course,
because I have a tendency to move a lot on and off my computer.
I'll attempt it when I've restored the image of my computer before the
wipe/reinstall.


On 2/1/08, Ben Scott <[EMAIL PROTECTED]> wrote:
>
> On Feb 1, 2008 2:50 PM, Jonathan Link <[EMAIL PROTECTED]> wrote:
> > I have several Windows XP Pro SP2 computers on my network that have poor
> > performance when copying small files, and normal performance when
> copying
> > large files.
>
> Did you try running CHKDSK /F and then defragmenting?
>
> -- Ben
>
> ~ Upgrade to Next Generation Antispam/Antivirus with Ninja!~
> ~   ~
>

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RE: Slow network performance small files

[Louis, Joe]

Sounds like difference in MTUs, or it could be auto negotiate settings on
the NIC. I've had PCs where not forcing to 100-full gets you less; even on
an autonegotiated switch. 

  _  

From: Jonathan Link [mailto:[EMAIL PROTECTED] 
Sent: Friday, February 01, 2008 2:50 PM
To: NT System Admin Issues
Subject: Slow network performance small files



My googlefu has failed me.  I've searched for and tested several potential
solutions to this problem.  Perhaps someone out there can enlighten me.
 
I have several Windows XP Pro SP2 computers on my network that have poor
performance when copying small files, and normal performance when copying
large files.  When I say poor performance, I'm in a 100 Mb switched
environment and I'm achieving 2 to 4 Mbits/sec copying small files.  On
other computers, I can copy the same set of files at about
20-30Mbits/second. Several is at least 11 out of 50.
 
Two computers of the same make can perform differently.  A wipe and
reinstall on my computer brought the speed back to what I would expect, so
it would seem to be a registry setting.  I'm speculating, because our
previous sysadmin had a penchant for mucking with the registry to fix any
little problem and frequenty created more problems in the process.
 
I've found this article from MS KB, but it didn't address the problem.
http://support.microsoft.com/kb/321098
 
 
Thanks,
Jonathan










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RE: Slow network performance small files

[Andy Shook]

googlefu = man-part

 

Shook



From: Jonathan Link [mailto:[EMAIL PROTECTED] 
Sent: Friday, February 01, 2008 2:50 PM
To: NT System Admin Issues
Subject: Slow network performance small files

 

 

My googlefu has failed me.  I've searched for and tested several
potential solutions to this problem.  Perhaps someone out there can
enlighten me.

 

I have several Windows XP Pro SP2 computers on my network that have poor
performance when copying small files, and normal performance when
copying large files.  When I say poor performance, I'm in a 100 Mb
switched environment and I'm achieving 2 to 4 Mbits/sec copying small
files.  On other computers, I can copy the same set of files at about
20-30Mbits/second. Several is at least 11 out of 50.

 

Two computers of the same make can perform differently.  A wipe and
reinstall on my computer brought the speed back to what I would expect,
so it would seem to be a registry setting.  I'm speculating, because our
previous sysadmin had a penchant for mucking with the registry to fix
any little problem and frequenty created more problems in the process.

 

I've found this article from MS KB, but it didn't address the problem.
http://support.microsoft.com/kb/321098

 

Thanks,

Jonathan






 


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Re: Slow network performance small files

[Ben Scott]

On Feb 1, 2008 2:50 PM, Jonathan Link <[EMAIL PROTECTED]> wrote:
> I have several Windows XP Pro SP2 computers on my network that have poor
> performance when copying small files, and normal performance when copying
> large files.

  Did you try running CHKDSK /F and then defragmenting?

-- Ben

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