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Create slow route loop on purpose



 
 
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  #1  
Old February 5th 19, 12:56 AM posted to alt.windows7.general
Jean Fredette
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Posts: 47
Default Create slow route loop on purpose

I noticed my routing table had about 30 entries and the network was slow.

After googling, and finding most of the suggested commands don't fix it
(like "netsh interface ip delete destinationcache") I wiped it out by
pulling the network cable and running as admin "route /f" and rebooting.

Then I added back the gateway which about halved the number of entries.

Accidentally, I noticed that this made file creation FASTER.
And it made almost everything faster.
WTF?

Before I cleaned up the routing table, every time I created something
Right Click - New - Folder
Right Click - New - File
it took forever (a minute or two) before the file or folder showed up.

Now, after I cleared the routing table of garbage, it shows up fast.
Now, after clearing the routing table, even sending this post is faster.

Maybe it's related. Maybe just the reboot fixed it. I don't know.

What I want to try is TEST if the routing table had any effect.
So now I want to CREATE a routing table that is "kind of slow".

How can I create a routing table that will slow down the network?
(Is there another way to artificially slow down the network for testing?)
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  #2  
Old February 5th 19, 04:28 PM posted to alt.windows7.general
Char Jackson
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Posts: 10,449
Default Create slow route loop on purpose

On Mon, 4 Feb 2019 17:56:06 -0600, Jean Fredette
wrote:

I noticed my routing table had about 30 entries and the network was slow.

After googling, and finding most of the suggested commands don't fix it
(like "netsh interface ip delete destinationcache") I wiped it out by
pulling the network cable and running as admin "route /f" and rebooting.

Then I added back the gateway which about halved the number of entries.


The number of routing table entries isn't a red flag (30 isn't a large
number), but if "route /f" removed half of them it would be very
interesting to see the output of "route print" from before you ran
"route /f". You'll have a default gateway, but what other gateways had
you configured, and why? Were one or more of them 127.0.0.1? I'm
wondering if you had a keylogger installed that captured your keystrokes
and sent them to a remote system somewhere, but good keyloggers are
supposed to be asynchronous so that they don't affect the user
experience and thus draw attention to themselves.

Accidentally, I noticed that this made file creation FASTER.
And it made almost everything faster.
WTF?


Without additional evidence, I'd say the reboot did the most good.


What I want to try is TEST if the routing table had any effect.
So now I want to CREATE a routing table that is "kind of slow".

How can I create a routing table that will slow down the network?
(Is there another way to artificially slow down the network for testing?)


Slow down which aspect of "the network"?

--

Char Jackson
  #3  
Old February 6th 19, 08:17 PM posted to alt.windows7.general
JJ[_11_]
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Posts: 744
Default Create slow route loop on purpose

On Mon, 4 Feb 2019 17:56:06 -0600, Jean Fredette wrote:
(Is there another way to artificially slow down the network for testing?)


Check out a software called Bandwidth Limiter.
  #4  
Old February 7th 19, 05:51 PM posted to alt.windows7.general
Jean Fredette
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Posts: 47
Default Create slow route loop on purpose

Char Jackson posted:

The number of routing table entries isn't a red flag (30 isn't a large
number), but if "route /f" removed half of them it would be very
interesting to see the output of "route print" from before you ran
"route /f". You'll have a default gateway, but what other gateways had
you configured, and why? Were one or more of them 127.0.0.1? I'm
wondering if you had a keylogger installed that captured your keystrokes
and sent them to a remote system somewhere, but good keyloggers are
supposed to be asynchronous so that they don't affect the user
experience and thus draw attention to themselves.


I wish I knew what a normal routing table is supposed to look like.
Every time I google for them, I get different routing tables.

There must be a standard normal routing table, isn't there?

To answer your question, I saved all the routing tables from
all the commands, which is how I know the only command
(other than route delete and route add of course) that made
any difference was "route -f" and "route /f" (both worked the same).

Here's the original routing table of 28 lines.
192.168.1.1 is my router
192.168.1.2 is the desktop with the network problem
255.255.255.0 is the netmask
127.0.0.1 is the localhost

I don't really know what all the rest are although some are likely
stale VPN sessions of some sort, and others are related to the
openvpn client being installed which installs something called
"tap" (I think) which is sort of a fake ethernet (I think).

================================================== =========================
IPv4 Route Table
================================================== =========================
Active Routes:
_Network_Destination________Netmask__________Gatew ay_______Interface__Metric
__________0.0.0.0__________0.0.0.0______192.168.1. 1____192.168.1.2_______36
____122.223.87.21__255.255.255.255______192.168.1. 1____192.168.1.2_______35
____126.117.19.46__255.255.255.255______192.168.1. 1____192.168.1.2_______35
________127.0.0.0________255.0.0.0_________On-link_______127.0.0.1______331
________127.0.0.1__255.255.255.255_________On-link_______127.0.0.1______331
__127.255.255.255__255.255.255.255_________On-link_______127.0.0.1______331
___153.208.18.158__255.255.255.255______192.168.1. 1____192.168.1.2_______35
______192.168.1.0____255.255.255.0_________On-link_____192.168.1.2______291
____192.168.1.2____255.255.255.255_________On-link_____192.168.1.2______291
____192.168.1.255__255.255.255.255_________On-link_____192.168.1.2______291
_____192.168.56.0____255.255.255.0_________On-link____192.168.56.1______281
_____192.168.56.1__255.255.255.255_________On-link____192.168.56.1______281
___192.168.56.255__255.255.255.255_________On-link____192.168.56.1______281
_____192.168.67.0____255.255.255.0_________On-link____192.168.67.2______281
_____192.168.67.2__255.255.255.255_________On-link____192.168.67.2______281
___192.168.67.255__255.255.255.255_________On-link____192.168.67.2______281
___218.133.94.236__255.255.255.255______192.168.1. 1____192.168.1.2_______35
__218.238.169.159__255.255.255.255______192.168.1. 1____192.168.1.2_______35
__221.189.116.139__255.255.255.255______192.168.1. 1____192.168.1.2_______35
___221.241.169.43__255.255.255.255______192.168.1. 1____192.168.1.2_______35
________224.0.0.0________240.0.0.0_________On-link_______127.0.0.1______331
________224.0.0.0________240.0.0.0_________On-link____192.168.56.1______281
________224.0.0.0________240.0.0.0_________On-link____192.168.67.2______281
________224.0.0.0________240.0.0.0_________On-link_____192.168.1.2______291
__255.255.255.255__255.255.255.255_________On-link_______127.0.0.1______331
__255.255.255.255__255.255.255.255_________On-link____192.168.56.1______281
__255.255.255.255__255.255.255.255_________On-link____192.168.67.2______281
__255.255.255.255__255.255.255.255_________On-link_____192.168.1.2______291
_================================================= ==========================
  #5  
Old February 7th 19, 06:02 PM posted to alt.windows7.general
Jean Fredette
external usenet poster
 
Posts: 47
Default Create slow route loop on purpose

JJ posted:

On Mon, 4 Feb 2019 17:56:06 -0600, Jean Fredette wrote:
(Is there another way to artificially slow down the network for testing?)


Check out a software called Bandwidth Limiter.


Googling I saw net limiter https://www.netlimiter.com/products/nl4
& TMeter http://www.tmeter.ru/en/ & net balancer https://netbalancer.com

Tmeter is the only free one of those I think where it is limited to 4
applications but maybe it will help me FIND the application that is slowing
empty file and empty folder creation down without affecting the CPU
performance at all.
  #6  
Old February 7th 19, 06:24 PM posted to alt.windows7.general
Jean Fredette
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Posts: 47
Default Create slow route loop on purpose

Jean Fredette posted:

TMeter tells me what two of the addresses are in the router table.

192.168.56.1 is listed as "VirtualBox Host-Only Ethernet Adapter" as is
192.168.67.2 listed as "VirtualBox Host-Only Ethernet Adapter #2"

It's going to take time to figure out how to filter TMeter captures which
seem as confusing as wireshark captures are to me.
  #7  
Old February 7th 19, 07:17 PM posted to alt.windows7.general
Char Jackson
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Posts: 10,449
Default Create slow route loop on purpose

On Thu, 7 Feb 2019 11:02:44 -0600, Jean Fredette
wrote:

JJ posted:

On Mon, 4 Feb 2019 17:56:06 -0600, Jean Fredette wrote:
(Is there another way to artificially slow down the network for testing?)


Check out a software called Bandwidth Limiter.


Googling I saw net limiter https://www.netlimiter.com/products/nl4
& TMeter http://www.tmeter.ru/en/ & net balancer https://netbalancer.com

Tmeter is the only free one of those I think where it is limited to 4
applications but maybe it will help me FIND the application that is slowing
empty file and empty folder creation down without affecting the CPU
performance at all.


If you're thinking there's something about your network that's slowing
down local file & folder creation, I expect that you'll be disappointed.
If those operations are indeed slower than they should be, something
else is going on.

I'll try to look at your routing table when I get some additional time,
but I don't expect any relation to what you're describing above. As a
test, disconnect your network cable and create some local folders and/or
files. If it's slow, it has nothing to do with the network.

--

Char Jackson
  #8  
Old February 7th 19, 07:37 PM posted to alt.windows7.general
Char Jackson
external usenet poster
 
Posts: 10,449
Default Create slow route loop on purpose

On Thu, 7 Feb 2019 10:51:38 -0600, Jean Fredette
wrote:

Char Jackson posted:

The number of routing table entries isn't a red flag (30 isn't a large
number), but if "route /f" removed half of them it would be very
interesting to see the output of "route print" from before you ran
"route /f". You'll have a default gateway, but what other gateways had
you configured, and why? Were one or more of them 127.0.0.1? I'm
wondering if you had a keylogger installed that captured your keystrokes
and sent them to a remote system somewhere, but good keyloggers are
supposed to be asynchronous so that they don't affect the user
experience and thus draw attention to themselves.


I wish I knew what a normal routing table is supposed to look like.
Every time I google for them, I get different routing tables.

There must be a standard normal routing table, isn't there?


No, not at all. Routing tables are "built" based on local variables and
are thus different for nearly everyone. You couldn't use my routing
tables any more than I could use yours.

--

Char Jackson
  #9  
Old February 7th 19, 07:39 PM posted to alt.windows7.general
Jean Fredette
external usenet poster
 
Posts: 47
Default Create slow route loop on purpose

Here is what I get when I run a pull out the ethernet cord and "route /f"
and then I reboot with the ethernet still disconnected (there is no Wi-Fi).
================================================== =========================
Network_Destination________Netmask__________Gatewa y_______Interface__Metric
_______127.0.0.0________255.0.0.0_________On-link_________127.0.0.1____331
_______127.0.0.1__255.255.255.255_________On-link_________127.0.0.1____331
_127.255.255.255__255.255.255.255_________On-link_________127.0.0.1____331
____192.168.56.0____255.255.255.0_________On-link______192.168.56.1____281
____192.168.56.1__255.255.255.255_________On-link______192.168.56.1____281
__192.168.56.255__255.255.255.255_________On-link______192.168.56.1____281
____192.168.67.0____255.255.255.0_________On-link______192.168.67.2____281
____192.168.67.2__255.255.255.255_________On-link______192.168.67.2____281
__192.168.67.255__255.255.255.255_________On-link______192.168.67.2____281
_______224.0.0.0________240.0.0.0_________On-link_________127.0.0.1____331
_______224.0.0.0________240.0.0.0_________On-link______192.168.56.1____281
_______224.0.0.0________240.0.0.0_________On-link______192.168.67.2____281
_255.255.255.255__255.255.255.255_________On-link_________127.0.0.1____331
_255.255.255.255__255.255.255.255_________On-link______192.168.56.1____281
_255.255.255.255__255.255.255.255_________On-link______192.168.67.2____281
================================================== =========================
127.0.0.1 is the localhost
192.168.56.1 is "VirtualBox Host-Only Ethernet Adapter"
192.168.67.2 is "VirtualBox Host-Only Ethernet Adapter #2"

When I reconnect the ethernet cable & reboot, I get this routing table.

================================================== =========================
Active Routes:
Network_Destination________Netmask__________Gatewa y_______Interface__Metric
_________0.0.0.0__________0.0.0.0______192.168.1.1 ______192.168.1.2_____36
_______127.0.0.0________255.0.0.0_________On-link_________127.0.0.1____331
_______127.0.0.1__255.255.255.255_________On-link_________127.0.0.1____331
_127.255.255.255__255.255.255.255_________On-link_________127.0.0.1____331
_____192.168.1.0____255.255.255.0_________On-link_______192.168.1.2____291
_____192.168.1.2__255.255.255.255_________On-link_______192.168.1.2____291
___192.168.1.255__255.255.255.255_________On-link_______192.168.1.2____291
____192.168.56.0____255.255.255.0_________On-link______192.168.56.1____281
____192.168.56.1__255.255.255.255_________On-link______192.168.56.1____281
__192.168.56.255__255.255.255.255_________On-link______192.168.56.1____281
____192.168.67.0____255.255.255.0_________On-link______192.168.67.2____281
____192.168.67.2__255.255.255.255_________On-link______192.168.67.2____281
__192.168.67.255__255.255.255.255_________On-link______192.168.67.2____281
_______224.0.0.0________240.0.0.0_________On-link_________127.0.0.1____331
_______224.0.0.0________240.0.0.0_________On-link______192.168.56.1____281
_______224.0.0.0________240.0.0.0_________On-link______192.168.67.2____281
_______224.0.0.0________240.0.0.0_________On-link_______192.168.1.2____291
_255.255.255.255__255.255.255.255_________On-link_________127.0.0.1____331
_255.255.255.255__255.255.255.255_________On-link______192.168.56.1____281
_255.255.255.255__255.255.255.255_________On-link______192.168.67.2____281
_255.255.255.255__255.255.255.255_________On-link_______192.168.1.2____291
================================================== =========================
192.168.1.1 is the router
192.168.1.2 is the Windows desktop
127.0.0.1 is the localhost which is the Windows desktop
192.168.56.1 is a "VirtualBox Host-Only Ethernet Adapter"
192.168.67.2 is another "VirtualBox Host-Only Ethernet Adapter #2"
 




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