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date: Wed, 23 Apr 2008 19:08:00 -0700,
group: microsoft.public.win2000.networking
back
Re: Slow PCs
My first thought is "Why assume a network problem?"
Network problems cause network performance problems, not "slow computer"
problems.
If you unplug the PC's network cable it is now *really, really* slow,..it
doesn't communicate at all,...does that make the Computer slow?,...probably
not. That is a bit over simplified, but you should get the point.
So you need to make your post more specific about what is really happening
and also specifically what is not happening.
--
Phillip Windell
www.wandtv.com
The views expressed, are my own and not those of my employer, or Microsoft,
or anyone else associated with me, including my cats.
-----------------------------------------------------
"Penny" wrote in message
news:A27AA4F9-D9EB-4174-AEF0-8F164372B6C7@microsoft.com...
>I have had reports from several people lately regarding their computers
>being
> very slow. Since there's so many users reporting it I now believe it
> might
> be network related. Unfortunately some of the switches aren't managed,
> and I
> don't even know the IP addresses of some of the ones that look like their
> manageable.
>
> I did an IP scan in hopes of being able to determine which ones might be
> switches, but unfortunately it's not resolving the hostnames, it's just
> coming up as N/A.
>
> Any ideas on how I can troubleshoot what might be going on? Just this
> past
> Sunday I moved DHCP off of the sonicwall and enabled it on the domain
> controller, but don't see anything odd going on with it.
date: Thu, 24 Apr 2008 08:31:50 -0500
author: Phillip Windell
Re: Slow PCs
In my case when I open windows explorer, there is a very long pause before my
local drive and mapped network drives show up. I thought it was just my
computer at first, but other people are reporting the same thing as well as
using applications like excel where it takes a long time to save changes.
Another example is MSAccess queries that usually run in seconds are taking 1
1/2 minutes.
I have seen this before in one case it turned out to be computers whose time
was outside the 6 minute window from the domain controller, in another
instance I was able to see from the router that there were 2 devices on the
network competing for the same IP address.
That was at other jobs where I had the appropriate tools and access to
managed switches. Here I don't have that luxury. I can't even determine the
IP addresses of the switches to see if there's a bad NIC out there somewhere.
Another indication that there's something not right on the network is we've
got a swipe card system for employees to come in the doors. When I have to
make updates to add/remove employees from the system, I have to export the
changes to all the doors. I'm getting errors from our remote location that
also uses this door card system stating that the export could not complete
due to a loss of commmunication. I tried it several times before I could get
the export to complete successfully.
"Phillip Windell" wrote:
> My first thought is "Why assume a network problem?"
> Network problems cause network performance problems, not "slow computer"
> problems.
>
> If you unplug the PC's network cable it is now *really, really* slow,..it
> doesn't communicate at all,...does that make the Computer slow?,...probably
> not. That is a bit over simplified, but you should get the point.
>
> So you need to make your post more specific about what is really happening
> and also specifically what is not happening.
>
> --
> Phillip Windell
> www.wandtv.com
>
> The views expressed, are my own and not those of my employer, or Microsoft,
> or anyone else associated with me, including my cats.
> -----------------------------------------------------
>
> "Penny" wrote in message
> news:A27AA4F9-D9EB-4174-AEF0-8F164372B6C7@microsoft.com...
> >I have had reports from several people lately regarding their computers
> >being
> > very slow. Since there's so many users reporting it I now believe it
> > might
> > be network related. Unfortunately some of the switches aren't managed,
> > and I
> > don't even know the IP addresses of some of the ones that look like their
> > manageable.
> >
> > I did an IP scan in hopes of being able to determine which ones might be
> > switches, but unfortunately it's not resolving the hostnames, it's just
> > coming up as N/A.
> >
> > Any ideas on how I can troubleshoot what might be going on? Just this
> > past
> > Sunday I moved DHCP off of the sonicwall and enabled it on the domain
> > controller, but don't see anything odd going on with it.
>
>
>
date: Thu, 24 Apr 2008 13:04:00 -0700
author: Penny
Re: Slow PCs
Thanks for the update.
You have to find a common denominator. Like the same switch being used or
the same server being used for all the "problem connection" occurances. It
can't just be "everything is bad everywhere" there is no way to troubleshoot
that.
Mapped drives are a BIG problem and are full of performance issues,...you
need to stop using them wherever possible. They will most certainly cause
Explorer to open slowly because the Maps have to scan/inventory the "drive"
contents on all the Maps when Explorer opens. So eliminate the Mapped
Drives. Use UNC Path "Shortcuts" instead.
A single bad nic is not likely to cause something that wide spread.
DNS issues can cause performance problems too if resolution is required or
if authentication is required.
Start examining event logs on the servers and even on clients that are
giving problem.
--
Phillip Windell
www.wandtv.com
The views expressed, are my own and not those of my employer, or Microsoft,
or anyone else associated with me, including my cats.
-----------------------------------------------------
"Penny" wrote in message
news:7C844519-35E6-4056-984E-BE6DC9FFC1F0@microsoft.com...
> In my case when I open windows explorer, there is a very long pause before
> my
> local drive and mapped network drives show up. I thought it was just my
> computer at first, but other people are reporting the same thing as well
> as
> using applications like excel where it takes a long time to save changes.
>
> Another example is MSAccess queries that usually run in seconds are taking
> 1
> 1/2 minutes.
>
> I have seen this before in one case it turned out to be computers whose
> time
> was outside the 6 minute window from the domain controller, in another
> instance I was able to see from the router that there were 2 devices on
> the
> network competing for the same IP address.
>
> That was at other jobs where I had the appropriate tools and access to
> managed switches. Here I don't have that luxury. I can't even determine
> the
> IP addresses of the switches to see if there's a bad NIC out there
> somewhere.
>
>
> Another indication that there's something not right on the network is
> we've
> got a swipe card system for employees to come in the doors. When I have
> to
> make updates to add/remove employees from the system, I have to export the
> changes to all the doors. I'm getting errors from our remote location
> that
> also uses this door card system stating that the export could not complete
> due to a loss of commmunication. I tried it several times before I could
> get
> the export to complete successfully.
>
>
>
> "Phillip Windell" wrote:
>
>> My first thought is "Why assume a network problem?"
>> Network problems cause network performance problems, not "slow computer"
>> problems.
>>
>> If you unplug the PC's network cable it is now *really, really* slow,..it
>> doesn't communicate at all,...does that make the Computer
>> slow?,...probably
>> not. That is a bit over simplified, but you should get the point.
>>
>> So you need to make your post more specific about what is really
>> happening
>> and also specifically what is not happening.
>>
>> --
>> Phillip Windell
>> www.wandtv.com
>>
>> The views expressed, are my own and not those of my employer, or
>> Microsoft,
>> or anyone else associated with me, including my cats.
>> -----------------------------------------------------
>>
>> "Penny" wrote in message
>> news:A27AA4F9-D9EB-4174-AEF0-8F164372B6C7@microsoft.com...
>> >I have had reports from several people lately regarding their computers
>> >being
>> > very slow. Since there's so many users reporting it I now believe it
>> > might
>> > be network related. Unfortunately some of the switches aren't managed,
>> > and I
>> > don't even know the IP addresses of some of the ones that look like
>> > their
>> > manageable.
>> >
>> > I did an IP scan in hopes of being able to determine which ones might
>> > be
>> > switches, but unfortunately it's not resolving the hostnames, it's just
>> > coming up as N/A.
>> >
>> > Any ideas on how I can troubleshoot what might be going on? Just this
>> > past
>> > Sunday I moved DHCP off of the sonicwall and enabled it on the domain
>> > controller, but don't see anything odd going on with it.
>>
>>
>>
date: Fri, 25 Apr 2008 08:35:06 -0500
author: Phillip Windell
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