DSM-G600, DNS-3xx and NSA-220 Hack Forum

I have similiar speed via wireless 1-2 MByte/s.

You can try to connect computer directly to nas to test speed.

Wireless transfer speeds are generally quite low

bjby wrote:

http://dns323.kood.org/information:benchmarks

Throughput Benchmarks
Protocol    Transfer Rate    Source    Sink
tcp (netcat)    20MB/s    /dev/zero@t42laptop    /dev/null@dns323
tcp (netcat)    18MB/s    disk@t42laptop    /dev/null@dns323
tcp (netcat)    16MB/s    /dev/zero@dns323    /dev/null@t42laptop
tcp (netcat)    12MB/s    /dev/zero@t42laptop    raid1@dns323
tcp (netcat)    12MB/s    disk@t42laptop    raid1@dns323
tcp (netcat)    12MB/s    raid1@dns323    disk@t42laptop
ssh    1.6MB/s    /dev/zero@dns323    /dev/null@t42laptop
ssh    1.3MB/s    /dev/zero@t42laptop    /dev/null@dns323
ftp    12MB/s    disk@t42laptop    raid1@dns323
rsync-over-tcp    5.5MB/s    disk@t42laptop    raid1@dns323
rsync-over-ssh    1MB/s    disk@t42laptop    raid1@dns323

With no details as to the network over which the transfer was done, and precious little about the "endpoints" (presumably it's an IBM/Lenovo Thinkpad T42) those benchmarks are pretty much useless.

Let's look at the first one - we're transferring data from /dev/zero (whatever that is) on a T42 of unknown specification, across an unknown network to /dev/null on the DNS-323 - you'd be forgiven for assuming that this 20MB/sec is the greatest throughput the DNS-323 is capable of.  It's not, it's presumably the best the "benchmarker" was able to achieve - it is however, significantly less than I have been able to achieve.

Going to dev/null which would be the equivalent of writing to a non existent file - or memory to memory - I've been able to achieve 40MB/sec - from an IBM xSeries server, over a gigabit network with 9000 byte frames, and measuring with Ixia's QCheck.

Over an 802.11g wireless network, wired to wireless, you're unlikely to see throughput greater than 2~3MB/sec and wireless to wireless, perhaps half that - for 802.11b you can divide those numbers by 4.

Last edited by fordem (2009-11-20 01:12:50)

The DNS-321 is apparently a little slower than the DNS-323, and yes, under certain conditions you can get > 20MByte/sec, even >30MByte/sec from a DNS-323, although, I would say that in the real world you are unlikely to see this sort of throughput, but it is acheivable in a lab.

FVS

Ignoring the Fordem requirement of minutely detailing all my equipment these are my results. 

My portable PC - a cheap unit running 54g wireless transfers at between 800 k to 1.2 meg/sec.  Generally it averages 1.0 mg/sec - same as yours.  This also varies around the house but never ever greater than 1.5 meg/sec.  An old Dell portable gets the same. 

We also have a PC connected wirelessly due to building structural problems running cable.  This uses a wireless PCI 108 Mbps Netgear card.  The router is a Netgear and connects at double or 108.  This PC transfers at about 3 meg/sec or double the 1.5 meg/sec.  This is no surprise as the signal is twice as fast - uses two channels or something. 

My wired 100 based system topped out at 8 to 9 meg/sec wired to wired, and 8-14 meg for a wired to wired cat 5e/cat 6, gig (1000) system. 

All these match with the benchmarks in above post.

Your problem is wireless not DNS-323. 
Bottom line - quit whining and plug into your router / switch / system with some cat 6 cable.  That's what I do for backup and the like. 
Or go to another forum to sort your wireless out. 


Biscotte