What speed is a good / realistic speed?

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Crispin
DD-WRT Novice


Joined: 06 Aug 2007
Posts: 4

PostPosted: Mon Aug 06, 2007 22:03    Post subject: What speed is a good / realistic speed? Reply with quote
Hi All,

I have been using DD-WRT for a while now and been very happy with it.

However, having setup a HTPC (which uses WIFI) and soon to have a nice big file server with all the media on, I am trying to squeeze out some extra speed.

At the moment, if I copy a 4GB file from HTPC to main pc (HTPC on WIFI, PC connected via LAN to Linksys WRT54G (v2) with DD-WRT(v23 sp2)) I manage to use up on average, 40% of the connection. The AP and machine are about 20 feet apart, line of sight. According to vista, I am getting 1.8MB/s throughput.

I have been browsing round all night and tried various tweaks but cannot muster anything more out of it.

The SNR hovers around 55 on channel 13. About the same for most other channels as there is not much in my area. The AP can see 3 other networks, all on 11, but HTPC cannot see any.

My question is, is what I am seeing realistically the max of G? I know you will never get near 100% but what can you get near? Any tips for increasing what I have got?

TIA.

Cheers,
Crispin
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campigenus
DD-WRT Guru


Joined: 01 Apr 2007
Posts: 520

PostPosted: Mon Aug 06, 2007 23:51    Post subject: Reply with quote
"I am getting 1.8MB/s throughput. "

That's basically what I see. About 6m between the two routers; separated by one non load bearing gyproc wall - approx 45% angle through the wall - Motorola WR850G v2 with latest v24 beta on both ends - one AP, one "repeater bridge."
Lore
DD-WRT Novice


Joined: 07 Jun 2006
Posts: 19

PostPosted: Tue Aug 07, 2007 5:29    Post subject: Reply with quote
I get roughly 2.20 mB/sec to 2.30 mB/sec throughput. I am running a Linksys WRT54g with DD-WRT v23 SP2. I'm on the second floor, router's downstairs behind a media panel.

However, once I have traffic going on the other ports on the router (hard wire) it just about dies to about 1.1 mB/sec.
Rekoil
DD-WRT User


Joined: 13 Jun 2007
Posts: 234

PostPosted: Tue Aug 07, 2007 5:40    Post subject: Reply with quote
I get up to 3.5mb/s to my AppleTV from my WRT350N. (In N mode)
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olmari
DD-WRT Guru


Joined: 24 Oct 2006
Posts: 1447
Location: Finland

PostPosted: Tue Aug 07, 2007 6:10    Post subject: Reply with quote
The "raw" speed in G specs are 54mbit/s, but it is half-duplex, so in reality the speed is roughly half of that, add some protocol header and actual data speed is around 20 mbit/s, which translates to some 2,5mbytes/s (20mbit/s : 8bits (=1 byte)) in perfect conditions...
Crispin
DD-WRT Novice


Joined: 06 Aug 2007
Posts: 4

PostPosted: Tue Aug 07, 2007 19:36    Post subject: Reply with quote
Thanks for the answers folks. Not what I was looking for though. I was hoping for "WOW - your's is so fast. I wish we could get like that" Surprised

But alas, I will continue to try... Rolling Eyes
GunTolo
DD-WRT Guru


Joined: 09 Aug 2006
Posts: 1103
Location: Surabaya, Indonesia

PostPosted: Wed Aug 08, 2007 3:08    Post subject: Reply with quote
try to test wireless speed connection on my GL, make graph with cacti ..with download via wifi , wireless mode : AP, you can see at the pic that max outbound is 2.45 Mbps


wrtgl-cacti.JPG
 Description:
Wireless Speed on GL
 Filesize:  56.07 KB
 Viewed:  10050 Time(s)

wrtgl-cacti.JPG



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tkoyn
DD-WRT User


Joined: 11 Feb 2007
Posts: 442

PostPosted: Sat Sep 01, 2007 2:53    Post subject: Reply with quote
Rekoil wrote:
I get up to 3.5mb/s to my AppleTV from my WRT350N. (In N mode)
Is that all the faster N mode is?

I've seen around 2.79 megabytes/sec from a wired computer to wireless laptop in standard G mode and up to 3.23 megabytes/sec with Frame Burst and Afterburner in G mode.

Sounds like N is not much faster than G?
war59312
DD-WRT Novice


Joined: 24 Aug 2007
Posts: 13
Location: U.S.A

PostPosted: Sat Sep 01, 2007 4:49    Post subject: Reply with quote
N is 130mb/s so you should get at least 15MB/s if your connection is strong.

If running Windows Vista RTM then there is a major networking bug and you might not get more than 12MB/s when listening to audio.

See:

http://blogs.technet.com/markrussinovich/archive/2007/08/27/1833290.aspx

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ten safe frogs
DD-WRT Novice


Joined: 02 Feb 2007
Posts: 12

PostPosted: Sat Sep 01, 2007 15:23    Post subject: Reply with quote
Rekoil wrote:
I get up to 3.5mb/s to my AppleTV from my WRT350N. (In N mode)


Wow, with my 350n from a macbook pro (n) to a mac mini (not n) i barely sqeak out 350k/s

i'm thinking maybe there's something wrong with the router? all the settings seem ok, I just can't figure out why it's soooo slow.

downloading from the internet is fine, and can hit nearly 6mb/s (speed tests regularly show 4+mb/s)

Anyone want to share some settings for optimizing speed?
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