[dba-Tech] sudden copy slowness

[Jim Lawrence]

Hi Peter:

Can I assume you have done all the standard tests to isolate the problem? Such as...

Is it only the two computers that are connecting that appear to have the problem? Are there other computers also demonstrating similar issues? If another new computer is added to the mix does the problem persist? Have you taken the offending computers out of the network and test each directly against the router? Have you ran internet speed test on each separately? Have you checked and/or upgraded the current NIC card drivers? Have you been monitoring performance via  the task-manager? Have you compared performance to other computers that have been running normally...item by item? Have you replaced the cables that connect the two computers with new Cat5 cables? Are both computers 64bit or are they mixed? Do error message ever appear? Is either computer slow booting? What type of hard-drives...SSD or spinning drives?

You can of course throw in a couple of extra same type LAN cards and connect through the same Switch or router...using different ports than previously.

My quess would be that the problem is related to only one computer and once the offender is isolated then you should be able to further reduce the issue to either hardware or software.

HTH

Jim 

----- Original Message -----
From: "peter brawley" brawley at earthlink.net>
To: "Discussion of Hardware and Software issues" databaseadvisors.com>
Sent: Tuesday, June 5, 2018 9:21:55 AM
Subject: Re: [dba-Tech] sudden copy slkowness

On 6/4/2018 2:22, Jim Lawrence wrote:
> Hi Peter:
>
> One time, I had a switch fail but that would be incredible unusual.

Right, other 'puters are using that switch and they're still OK. 
Changing the R5 cable made no diff.
> I have had trouble, a while back, when trying to connect old Windows OSs that still use SMB version 1-3 as it has been disabled in Windows 10 and the newer servers.
>
> https://support.microsoft.com/en-us/help/2696547/how-to-detect-enable-and-disable-smbv1-smbv2-and-smbv3-in-windows-and
> http://bit.ly/2Jlho15
>
> I have no idea whether that is your issue but it sounds like it could be.

Thanks. According to that MSoft article, Win 7 SMB is v1 only, so it 
seems there's nothing to do on that front.

I fooled around with "advanced" NIC properties and got back to 30% of 
its previous performance. I'm going to try replacing the NIC.

PB
>
> Jim
>
> ----- Original Message -----
> From: "peter brawley" brawley at earthlink.net>
> To: "Discussion of Hardware and Software issues" databaseadvisors.com>
> Sent: Sunday, June 3, 2018 7:32:13 PM
> Subject: [dba-Tech] sudden copy slkowness
>
> Suddenly, copying files to either HD on one particular win7 box from
> other lan 'puters is ten times slower than it had been. Bith drives
> (500GBm 2TB) are about 55% full.
>
> Web download speeds haven't changed.
>
> Anybody seen something like this? What should I be checking out?
>
> PB
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