Norm X wrote:
On 2015-12-27 7:26 PM, Char Jackson wrote:
On Sun, 27 Dec 2015 17:36:26 -0800, Norm X wrote:
After upgrading to cat6 Ethernet cable and Gigabit Ethernet switch, I am
still having problems with an Ethernet connection that craps out at 1.0
Gbps.
The 1 Gbps link speed sounds correct, so what does "craps out" mean? Have
you tried another Ethernet cable? Cat5, Cat5e, and Cat6 are all easily
able
to link up at 1Gbps. Have you tried another switch, or another PC?
Does "still having problems" imply that you had a networking issue before
you upgraded?
Yes all problems with Ethernet were there with Cat 5e cable and a
100Mbps swith. The OS reports loss of connection to DNS. Thunderbird
Mail program reports time out with message containing a large enclosure
or loss of connections to university mail server.
The interesting thing about the 64 GB microSD is that while it is lost
to the file system, ReadyBoost still shows up in Resource Monitor.
All these selective failures now lead my to mistrust my version of
windows 10. I had considered purchase of a version on DVD. The Win10 I
have has been upgrade twice over the network. If the network cannot be
trusted, bit errors might make it behave poorly.
I have Win7 on a desktop machine that I recently upgraded to quad core
Q6600. Generally my Win7 gives no errors like my Win10 but the original
install was from a DVD whose .iso was downloaded from the net. I that
time I was not savvy enough to check checksums. I know that unimportant
files are corrupted because Event Viewer says they are.
The only kind of download which is "unprotected", is a direct
download of the ISO for Windows 10 from the server. I had
two of these fail (I could tell later they were too small).
Direct downloads happen, if you attempt
to get a copy of Windows 10 using WinXP as the downloading
machine or use Linux as the downloading machine.
MediaCreationTool should verify the checksum and the size.
It should work on a Vista/W7/W8/W10 machine.
WindowsUpdate should be similarly protected.
Tools like WSUSOffline, or your average web browser,
may not deal well with the way the Microsoft servers
are set up now. And I don't understand the reason
why this is happening (both ends of the transfer
appear to be satisfied that the transfer is complete,
when the size is obviously not correct).
But rest assured, that if a Microsoft tool carries out
the download, it will be verified before usage.
*******
Before using any computer for serious work, you
carry out a memory test, and a load/torture test
of the CPU. This is a way of checking that it
is working properly. Only then do you install
an OS on it. In particular, the Windows registry
can be loaded into RAM, and written back out
later, so there is potential for the registry
to help you spot corruption if the computer
itself is responsible. When people overclock Windows
machines, sometimes registry corruption is the
first sign their overclock is not stable.
*******
It's more likely there is some interaction
between your various network interfaces,
than an issue with the physical network.
There were chipsets with particular issues
regarding networking. There was one NVidia
chipset (Nforce3 era?) with MAC in the Southbridge,
which would corrupt a 32 bit word every once in
a while. I never did hear whether NVidia was
able to fix this, or it was an unrepairable
network bug (via driver change). There aren't
too many issues like that out there.
You can carry out basic network speed tests
with something like this. It's a clumsy test
tool, requiring the receiving machine to be
set up first, then starting a sending program
pointed at it. But it's one way to get
an opinion about a network. And one slight
advantage of a program like this, is it is
multiple platform. You can repeat the tests
from a Linux LiveCD if you want.
https://en.wikipedia.org/wiki/Ttcp
I got mine here, according to my bookmarks file.
http://www.pcausa.com/Utilities/ttcpdown1.htm
Paul