rt-ac5300 and 88u throughput strangeness

[pete y testing]

hi guys

i have a doozy of an issue here i cant for the life of me get my head around

the first image below is reading from ds-415+ connected to the 88u by ethernet ( non bonded ) , comp is connected with an asus pce-ac68 3 x 3 adapter

https://onedrive.live.com/?cid=7D5C...1A0742!972&parId=7D5CB240BE1A0742!969&o=OneUp


the second is writing

https://onedrive.live.com/?cid=7D5C...1A0742!971&parId=7D5CB240BE1A0742!969&o=OneUp


now my head tells me this shouldnt be possible with a 3 x 3 client yet i can replicate this result on both routers if i follow a certain path when connecting

108MB/s read and 74.4MB/s write is more what i would expect from 4 x 4

so how to explain this aberration

for what its worth im also getting 2.4 gig throughput of almost 40 MB/s read as well

 

[sfx2000]

Reads are always a little bit faster than writes...

The read rates are a bit high, but not exceptionally high... the writes, well, lots of things at play there...

Wonder is it's just Windows and how it's calculating thru-put - have you put a stopwatch on things and work it back?

 

[pete y testing]

Wonder is it's just Windows and how it's calculating thru-put

thats what i thought but when timed the figures work out and if it where just windows wouldnt the networx reading be different

have you put a stopwatch on things and work it back?

yup the figures add up and thats what has me stumped

it is however almost double what i would expect for a 3 x 3 client in MB/s , its windows 10 btw

figures

1.945 gig vid file takes just on 20 seconds so 1945MB /20 = 95 MB/s if im not wrong in my thinking

 

[L&LD]

How much ram on your system and what os are you running?

Try a reboot and see if the os was caching the file for you.

 

[pete y testing]

How much ram on your system and what os are you running?

8 gig ram

and what os are you running?

windows 10 pro 64 bit

Try a reboot and see if the os was caching the file for you.

restarted many times and the same result , restarted nas and router too

1.945 gig vid file takes just on 20 seconds so 1945MB /20 = 95 MB/s if im not wrong in my thinking

and this is the part thas really confusing , im pretty sure its reporting right , if i dont start a certain way it only reports 50MB/s , eg if i connect to 2.4 gig and transfer then switch to 5 gig and transfer it almost always report the above figures , but if i just connect to 5 gig first its limited to about 50MB/s

im stumped at this stage as i always use this comp for my testing and its never done this before but then again it was win 8 pro until a few weeks ago , might try uninstalling the ac68 drivers and reinstalling and see if it helps

 

[L&LD]

and this is the part thas really confusing , im pretty sure its reporting right , if i dont start a certain way it only reports 50MB/s , eg if i connect to 2.4 gig and transfer then switch to 5 gig and transfer it almost always report the above figures , but if i just connect to 5 gig first its limited to about 50MB/s

That is the definition of caching.

When you transfer on the 2.4GHz WiFi and then switch to the 5GHz, it has already been cached.

 

[pete y testing]

When you transfer on the 2.4GHz WiFi and then switch to the 5GHz, it has already been cached.

but 2.4 gig shouldnt report 40MB/s in the first place

 

[bbsc]

but 2.4 gig shouldnt report 40MB/s in the first place

Why not?

And yes, try to copy a bigger file, something like 20-30 GB.
Your results are really interesting.

 

[pete y testing]

And yes, try to copy a bigger file, something like 20-30 GB.
Your results are really interesting.

and here is something interesting as well

the synology NAS resource meter is reporting the same speed , doesnt that mean the traffic is moving at 100MB/s and not just a cache issue although i cant see it being anything but a cache issue

 

[bbsc]

i cant see it being anything but a cache issue

95-97 MB/s results were reported several times for 3x3:3 before.
But 108 MB/s is a little more then expected even in ideal conditions.
That's why your results are interesting

BTW, what driver version are you using for PCE-AC68?

 

[pete y testing]

BTW, what driver version are you using for PCE-AC68?

driver version 6.30.223.228

 

[bbsc]

Ok, I have something to add.
There was a report about 73-75 MB/s throughput with BCM94352HMB (it's 2x2 card) and Linksys EA6500v2 router.
And now there's a report about the same speed with BCM94352HMB and RT-AC88U from another user.
So your results with 3x3 PCE-AC68 now seem to be not so fantastic.
My congratulations

Looks like Asus has managed to produce a really good router an adapter.

 

[pete y testing]

Looks like Asus has managed to produce a really good router an adapter.

i did some testing with a new test file i havnt used before and was getting 87 MB/s average throughput for the life of the transfer , average throughput rather than max throughput and the synology resourse meter was reporting the same

what i need is a really big test file , is there somewhere i can download a 40 gig file to test with

 

[sfx2000]

what i need is a really big test file , is there somewhere i can download a 40 gig file to test with

Maybe grab a linux ISO file?

 

[sfx2000]

Hey Pete - quick method for creating unique test files to avoid caching -- needs a linux install (VM or Metal), but here's a quick tip... can make the files as big as you want/need, and with this, you can pipe the output directly to a network socket if you wish, or output it to wherever...

Just make sure you have enough space for the file, as the command will execute - if you have 80MB free, and create a 100MB file, it will create a 100MB file...

dd if=/dev/urandom of=1MB bs=1024 count=1024
dd if=/dev/urandom of=2MB bs=1024 count=2000
dd if=/dev/urandom of=5MB bs=1024 count=5000
dd if=/dev/urandom of=10MB bs=1024 count=10000
dd if=/dev/urandom of=100mb bs=1024 count=100000

 

[pete y testing]

thanks sfx will have a look at it but its easy to find new big files as i have thousands of blu ray movies with 30gigish files that i can upload to the nas from another pc