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#1 2009-03-18 00:35:41

diablo2man
Member
Registered: 2009-02-24
Posts: 17

Only 2MB/s in 100M Wired network, Help!

I use window Vista + WRT54GSV2 + DNS323 (2x1TB GP). The ftp download rate is only 2MB/s - 3MB/s. Where it turns to wireless network, I can't even stream the media to the PC. And the mounted folder in Windows is extremely  unstable. Some times it just shows "no such file exist" when I try to copy some files (I can't even change the name of files on windows sharing). Is it normal?

Could anyone provide some tricks to confirm where the problem is (323, pc or router)?

Any suggestion is appreciated. Thanks.

Last edited by diablo2man (2009-03-18 08:36:02)

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#2 2009-03-18 00:56:44

blahsome
Member
Registered: 2008-03-02
Posts: 157

Re: Only 2MB/s in 100M Wired network, Help!

3MBytes/s? That's roughly 24mb/s, which is indeed low if it's a wired connection. It's normal if it's wireless, though.

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#3 2009-03-18 01:05:50

diablo2man
Member
Registered: 2009-02-24
Posts: 17

Re: Only 2MB/s in 100M Wired network, Help!

It is wired connection. I suppose it will reach 8-10MB/s in 100M network.

And it is via FTP. I can't perform any actions on windows mapping driver

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#4 2009-03-18 05:53:30

bripab007
Member
Registered: 2009-02-16
Posts: 39

Re: Only 2MB/s in 100M Wired network, Help!

I get about 22MB/s read and roughly 17MB/s write on a 1000Mbit switch from/to the DNS-323, and that's 10x more theoretical bandwidth than 100Mbit, so your speeds don't seem that outlandish to me.

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#5 2009-03-18 08:34:31

diablo2man
Member
Registered: 2009-02-24
Posts: 17

Re: Only 2MB/s in 100M Wired network, Help!

bripab007 wrote:

I get about 22MB/s read and roughly 17MB/s write on a 1000Mbit switch from/to the DNS-323, and that's 10x more theoretical bandwidth than 100Mbit, so your speeds don't seem that outlandish to me.

But 1000M is only 2-3 times faster than 100M network in practical due to some limits.

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#6 2009-03-18 15:09:13

fordem
Member
Registered: 2007-01-26
Posts: 1938

Re: Only 2MB/s in 100M Wired network, Help!

bripab007 wrote:

I get about 22MB/s read and roughly 17MB/s write on a 1000Mbit switch from/to the DNS-323, and that's 10x more theoretical bandwidth than 100Mbit, so your speeds don't seem that outlandish to me.

There is a significant difference between theory & reality, and things don't operate in a linear fashion - as a perphaps more familiar parallel - compare the I75 where the speed limit is at most 75 mph to the German autobahn, (which has no speed limit), your typical minivan will comfortably hit the spped limit on the I75, but on the autobahn might just struggle to keep up with the Porsches and Ferraris.

Like your minivan, the DNS-323 is easily capable of hitting the limits of a 100 mbps connection, but is woefully slow when it comes to gigabit.

Why not throttle your connection to 100mbps and see what throughput you get?

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#7 2009-03-18 16:52:06

diablo2man
Member
Registered: 2009-02-24
Posts: 17

Re: Only 2MB/s in 100M Wired network, Help!

So any way to adjust my 323?

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#8 2009-03-18 16:53:38

blahsome
Member
Registered: 2008-03-02
Posts: 157

Re: Only 2MB/s in 100M Wired network, Help!

bripab007 wrote:

I get about 22MB/s read and roughly 17MB/s write on a 1000Mbit switch from/to the DNS-323, and that's 10x more theoretical bandwidth than 100Mbit, so your speeds don't seem that outlandish to me.

You can't extrapolate that way, I'm afraid. The DNS-323 is known to be able to saturate a properly configured 100M connection, at roughly 12MB/s. On a gigabit ethernet, the bottleneck shifts to the DNS-323 itself and all benchmarks are roughly between 15MB/s and 30MB/s or so.

With more capable hardware such as a higher-end NAS or a dedicated PC server, and faster hard drives, it's not unusual to see 50MB/s or above on a gigabit network.

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#9 2009-03-18 19:10:55

fordem
Member
Registered: 2007-01-26
Posts: 1938

Re: Only 2MB/s in 100M Wired network, Help!

diablo2man wrote:

So any way to adjust my 323?

In all likelihood - it's not the 323.

You need to look at the other end of the connection - if you're not running Vista with SP1 that would be a start - and the network itself.

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