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Windows 7: slow Network copying >12mbs

13 Sep 2009   #11
SquonkSC

Win7 Build 7600 x86
 
 

Quote   Quote: Originally Posted by srgsng25 View Post
interesting i have gigabit gards in all the machines and i use to see great speed with xp and teh switch most time it was 30-40

so i am gonna have to dig up 2 gig switches
I am not calling you a liar, but 30-40 megabyte per second is physically impossible with a 100 megabit switch in between.

You were probably looking at 30-40 megabits per second, not megabytes.
Which is a resonable average speed for 100mbit.

The confusion is only natural, many people mix them up.

greetz


My System SpecsSystem Spec
.
13 Sep 2009   #12
zigzag3143

Win 8 Release candidate 8400
 
 

Guys

Im missing something here

if net speeds are in bits why are we converting to bytes to see relative speeds

100o megabit nic
100 megabit switch

trensfer speed 7-12 mega bit? that seems slow, right?

Ken
My System SpecsSystem Spec
13 Sep 2009   #13
SquonkSC

Win7 Build 7600 x86
 
 

Quote   Quote: Originally Posted by zigzag3143 View Post
Guys

Im missing something here

if net speeds are in bits why are we converting to bytes to see relative speeds

100o megabit nic
100 megabit switch

trensfer speed 7-12 mega bit? that seems slow, right?

Ken
I assume the OP means 7 to 12 megabytes, since windows reports speeds in megabytes
My System SpecsSystem Spec
.

13 Sep 2009   #14
zigzag3143

Win 8 Release candidate 8400
 
 

Quote   Quote: Originally Posted by squonksc View Post
Quote   Quote: Originally Posted by zigzag3143 View Post
Guys

Im missing something here

if net speeds are in bits why are we converting to bytes to see relative speeds

100o megabit nic
100 megabit switch

trensfer speed 7-12 mega bit? that seems slow, right?

Ken
I assume the OP means 7 to 12 megabytes, since windows reports speeds in megabytes
Um no offense but if net speeds are always in bits and windows report them in bytes doesn't that mean almost always? <g>
My System SpecsSystem Spec
13 Sep 2009   #15
SquonkSC

Win7 Build 7600 x86
 
 

Quote   Quote: Originally Posted by zigzag3143 View Post
Quote   Quote: Originally Posted by squonksc View Post
Quote   Quote: Originally Posted by zigzag3143 View Post
Guys

Im missing something here

if net speeds are in bits why are we converting to bytes to see relative speeds

100o megabit nic
100 megabit switch

trensfer speed 7-12 mega bit? that seems slow, right?

Ken
I assume the OP means 7 to 12 megabytes, since windows reports speeds in megabytes
Um no offense but if net speeds are always in bits and windows report them in bytes doesn't that mean almost always? <g>
LOL

Manufacturers, ISP's and network operators talk in bits.

Windows reports the card as 100mbit also, but transfers are always shown in bytes, kbytes or mbytes.
My System SpecsSystem Spec
14 Sep 2009   #16
Guy Scharf

Win 7-32, XP Pro-32
 
 

Quote   Quote: Originally Posted by srgsng25 View Post
interesting i have gigabit gards in all the machines and i use to see great speed with xp and teh switch most time it was 30-40

so i am gonna have to dig up 2 gig switches
30-40 what? Bits, Bytes? And as reported by what tool?

The switch you quoted is a 100 mbps switch, so that limits your transfer rates to 100 mbps as the NICs in your computers will operate at 100 mbps not 1 gbps.

Networks don't operate at 100% utilization, so your actual transfer rate will be less than 100 mbps. I recently did some testing of transferring very large files across a 100 mbps network and found network usages of 40% to 60%, as reported by Task Manager. 60% of 100 mbps is 60 mbps. At 8 bits per byte, that would be about 7.5 million bytes per second.

TCP/IP packets have 18 bytes of overhead in each 1518 byte packet, so 7.5 million bytes of usage corresponds to about 7.4 MB of data.

(In all these numbers, "million" means 10^6 and not 1024^2.)

If you want maximum transfer rates, get a gigabit switch that supports large packets and enable large packets on both computers and in the switch.
My System SpecsSystem Spec
14 Sep 2009   #17
SquonkSC

Win7 Build 7600 x86
 
 

Quote   Quote: Originally Posted by Guy Scharf View Post
Quote   Quote: Originally Posted by srgsng25 View Post
interesting i have gigabit gards in all the machines and i use to see great speed with xp and teh switch most time it was 30-40

so i am gonna have to dig up 2 gig switches
30-40 what? Bits, Bytes? And as reported by what tool?

The switch you quoted is a 100 mbps switch, so that limits your transfer rates to 100 mbps as the NICs in your computers will operate at 100 mbps not 1 gbps.

Networks don't operate at 100% utilization, so your actual transfer rate will be less than 100 mbps. I recently did some testing of transferring very large files across a 100 mbps network and found network usages of 40% to 60%, as reported by Task Manager. 60% of 100 mbps is 60 mbps. At 8 bits per byte, that would be about 7.5 million bytes per second.

TCP/IP packets have 18 bytes of overhead in each 1518 byte packet, so 7.5 million bytes of usage corresponds to about 7.4 MB of data.

(In all these numbers, "million" means 10^6 and not 1024^2.)

If you want maximum transfer rates, get a gigabit switch that supports large packets and enable large packets on both computers and in the switch.
Hi guy,

Your wording is different but your story is exactly what I told the OP a few posts ago.
Even the "get a gigabit switch" was mentioned.

But no harm done, I guess you missed that post, and the OP gets a second opinion.

greetz
My System SpecsSystem Spec
14 Sep 2009   #18
srgsng25

windows 7 7420
 
 
network issues cont

here is a picture of me transferring a 700MB avi to my desktop at a whopping 6.43MB/Second

http://www.specialchildexchange.org/pics/Untitled-1.jpg
My System SpecsSystem Spec
14 Sep 2009   #19
SquonkSC

Win7 Build 7600 x86
 
 

Quote   Quote: Originally Posted by srgsng25 View Post
here is a picture of me transferring a 700MB avi to my desktop at a whopping 6.43MB/Second

http://www.specialchildexchange.org/pics/Untitled-1.jpg
Are you copying from internal to remoter internal disk? or is on of them usb external disk?


Greetz
My System SpecsSystem Spec
14 Sep 2009   #20
srgsng25

windows 7 7420
 
 
more

i am copying form windows home server with 3 500 gig drive just thrown in lol to my desktop over our private lan
My System SpecsSystem Spec
Reply

 slow Network copying >12mbs




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