Ethernet to USB 2.0 is very slow

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

When I send data over ethernet to a drive running on the USB 2.0 its very
slow. This is PC to PC over 100baseT wired home LAN to do disk backups.
The slowness occurs in the translation from 10baseT100 to the USB 2.0 and
the CPU is 100% utilized.

Are there cards that offload the CPU processing needed to do this
translation?

I have a PCI combo card (w/firewire), brand new installed.

The following clues narrow the problem down to the USB to ethernet
conversion as the problem.:

PC to PC over ethernet from installed HD to installed HD is very fast.
PC from its own C: drive to the USB 2.0 drive is very fast.
but when do PC to PC over ethernet to save data on theh USB 2.0 drive its
very very slow...like 5x slower then drive C: to USB 2.0.

Any thoughts?

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Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

On Sat, 5 Feb 2005 17:39:02 UTC, "jtsnow" <jtsnow@yahoo.com> wrote:

| When I send data over ethernet to a drive running on the USB 2.0 its very
| slow. This is PC to PC over 100baseT wired home LAN to do disk backups.
| The slowness occurs in the translation from 10baseT100 to the USB 2.0 and
| the CPU is 100% utilized.
|
| Are there cards that offload the CPU processing needed to do this
| translation?
|
| I have a PCI combo card (w/firewire), brand new installed.
|
| The following clues narrow the problem down to the USB to ethernet
| conversion as the problem.:
|
| PC to PC over ethernet from installed HD to installed HD is very fast.
| PC from its own C: drive to the USB 2.0 drive is very fast.
| but when do PC to PC over ethernet to save data on theh USB 2.0 drive its
| very very slow...like 5x slower then drive C: to USB 2.0.
|
| Any thoughts?
|
|

Take the drive out of it's usb enclosure and go scsi? :-)

--

Reply to Anonymous

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

"jtsnow" <jtsnow@yahoo.com> wrote in message
news:Tw7Nd.80687$Tf5.69937@lakeread03...
> When I send data over ethernet to a drive running on the USB 2.0 its very
> slow. This is PC to PC over 100baseT wired home LAN to do disk backups.
> The slowness occurs in the translation from 10baseT100 to the USB 2.0 and
> the CPU is 100% utilized.
>
> Are there cards that offload the CPU processing needed to do this
> translation?
>
> I have a PCI combo card (w/firewire), brand new installed.
>
> The following clues narrow the problem down to the USB to ethernet
> conversion as the problem.:
>
> PC to PC over ethernet from installed HD to installed HD is very fast.
> PC from its own C: drive to the USB 2.0 drive is very fast.
> but when do PC to PC over ethernet to save data on theh USB 2.0 drive its
> very very slow...like 5x slower then drive C: to USB 2.0.
>
> Any thoughts?
>
Wouldn't it be easier just to plug the USB drive directly into the other PC?

SteveH

Reply to steveh

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

You can get a Linksys Network Storage Link For USB 2.0 Disk Drive and link
the drive directly to the network. I have found that writing to a USB 2.0
drive is very fast so i doubt that's your problem. The LAN is always going
to be the rate limiting factor.

How much new data do you produce each day anyway? If you did a backup of
what's changed then it would be pretty quick however slow the copy process
is. Take a look at SyncBack:
http://www.2brightsparks.com/asset [...] _setup.zip
It's freeware and very nice.

Ian

Reply to Anonymous

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

"jtsnow" <jtsnow@yahoo.com> wrote in message
news:Tw7Nd.80687$Tf5.69937@lakeread03...
> When I send data over ethernet to a drive running on the USB 2.0 its very
> slow. This is PC to PC over 100baseT wired home LAN to do disk backups.
> The slowness occurs in the translation from 10baseT100 to the USB 2.0 and
> the CPU is 100% utilized.
>
> Are there cards that offload the CPU processing needed to do this
> translation?
>
> I have a PCI combo card (w/firewire), brand new installed.
>
> The following clues narrow the problem down to the USB to ethernet
> conversion as the problem.:
>
> PC to PC over ethernet from installed HD to installed HD is very fast.
> PC from its own C: drive to the USB 2.0 drive is very fast.
> but when do PC to PC over ethernet to save data on theh USB 2.0 drive its
> very very slow...like 5x slower then drive C: to USB 2.0.
>
> Any thoughts?
>
USB controller and LAN on the same interrupt?

Reply to Anonymous

Archived from groups: alt.comp.hardware.pc-homebuilt (More info?)

>.USB 2 is
>fast...but when using both on same pc its.....SLOOWWWWWW.

USB + networking = Trouble. The CPU must control all data flow through
the USB cable. Since unlike Firewire, USB is dumb.

Reply to Anonymous

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