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Author Topic: Slow Upload speed to external drive  (Read 4443 times)

FurryNutz

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Re: Slow Upload speed to external drive
« Reply #15 on: January 15, 2020, 06:17:07 AM »

How are you mapping the drive in  Explorer?
What is the format of the USB drive? NTFS?
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nairolf13

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Re: Slow Upload speed to external drive
« Reply #16 on: January 16, 2020, 03:06:53 AM »

hello

i have same problem ,  read are ok , but write block at 7Mo/s .
just a fun , during transfert if i change "QoS" write up at 9 Mo/s during 2-3 sec and return to 7Mo/s

i think i use amazon return, not a real USB3.0 port

PS: tested ftp, samba, usb 2.0, usb 3.0, wifi, ethernet ,  no change :(
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FurryNutz

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Re: Slow Upload speed to external drive
« Reply #17 on: January 16, 2020, 06:20:24 AM »

I found out how to access it. I'll be looking into this. Overall, there seems to be problems with USB drives on the 882.

Windows 10 Home
Yes, through Explorer.

Sadly, I've had the same setup with a different manufacturers router and speeds were much higher.

Same USB 3.0 Seagate Slim BackupPlus 1.5 TB drive as well.
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GreenBay42

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Re: Slow Upload speed to external drive
« Reply #18 on: January 16, 2020, 06:31:31 AM »

read are ok , but write block at 7Mo/s .
just a fun , during transfert if i change "QoS" write up at 9 Mo/s during 2-3 sec and return to 7Mo/s

Questions from D-Link engineer:

What kind of application that customer used for which router feature (DLNA, Samba or FTP)?

How did customer measure the transfer rate?

Using Wi-Fi or Ethernet? Are they the same speed?
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FurryNutz

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Re: Slow Upload speed to external drive
« Reply #19 on: January 16, 2020, 07:07:22 AM »

Can you respond to GreenBays question please?

I've had this issue for the last year. No matter what drive is plugged into the USB 3.0 port, the transfer rate is horrible.

I heard it's because of the lower amount of RAM in the router. Due to that, the transfer rate is throttled for write speed. Not sure how valid that is.

However, there are times that I get 27 mb/s but that's once in a blue moon. Non dependent on who else is on the network.
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FurryNutz

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Re: Slow Upload speed to external drive
« Reply #20 on: January 16, 2020, 07:07:56 AM »

Can you respond to GreenBays question please?

Same issue, I am using my Spare SSD and upload Speeds are Crap. 1-7Mbps max
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me_iauras

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Re: Slow Upload speed to external drive
« Reply #21 on: January 16, 2020, 07:16:00 AM »

read are ok , but write block at 7Mo/s .
just a fun , during transfert if i change "QoS" write up at 9 Mo/s during 2-3 sec and return to 7Mo/s

Questions from D-Link engineer:

What kind of application that customer used for which router feature (DLNA, Samba or FTP)?

How did customer measure the transfer rate?

Using Wi-Fi or Ethernet? Are they the same speed?

The D-Link engineer should choose his questions better ; there is no "write" speed which can be tested with DLNA as it's only read activity by a DLNA client from a DLNA server ( router in our case )
OTOH using both Samba shares and FTP access the write speed from a client to the router's USB drive is capped at ~7 MB/s most of the time ( in very occasional  situations for very brief periods of time I get ~27 MB/s with the same 2 USB HDDs I perform all tests , both of them USB powered exclusively ) ; considering the low write speed neither Eth or wireless connection makes a difference ; also the type of client ( Windows or Linux ) doesn't make any difference . In my case speed was assessed just by copying large files to and from the USB drive attached to the router .
The read speed is however satisfactory @ ~45 MB/s .
At first I assumed the poor performance was due to lower power supplied ( than the USB spec ) but as others are experiencing the same write speeds with self powered drives this is probably wrong .
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nairolf13

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Re: Slow Upload speed to external drive
« Reply #22 on: January 17, 2020, 03:16:57 AM »

i confirm "me_jauras"
tested ftp samba , wifi ethernet ....
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FurryNutz

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Re: Slow Upload speed to external drive
« Reply #23 on: January 17, 2020, 06:06:04 AM »

« Last Edit: January 17, 2020, 06:53:17 AM by GreenBay42 »
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GreenBay42

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Re: Slow Upload speed to external drive
« Reply #24 on: January 17, 2020, 07:29:45 AM »

Thanks furry.

I replied back to the D-Track (ticket) with everyone's information. Seems like the write speed is capping at 7MB/s and get bursts at 27MB/s. Sounds like a limitation but they will check with the vendor.

Remember the router is not going to be as powerful as a PC or dedicated NAS. The router has to process a lot and I am assuming the USB ports are low priority. The router has to inspect incoming/outgoing traffic, routing, NAT, encryption, WIFI, Ethernet, rules, etc. So it could be a lack of memory/processing power that is slowing it down.

I wonder if connecting 1 PC to the router without internet or anything else connected with smart connect off if "write" speeds would be better.  If not sounds like a chipset/firmware limitation.
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FurryNutz

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Re: Slow Upload speed to external drive
« Reply #25 on: January 17, 2020, 08:00:24 AM »

FYI, my DIR-882 was off line from the ISP modem and was just the 1 PC and the USB drive when I did my speed tests. So the system was not really under any load.
« Last Edit: January 18, 2020, 04:12:54 PM by FurryNutz »
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PitbulI

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Re: Slow Upload speed to external drive
« Reply #26 on: January 18, 2020, 10:38:20 PM »

Can you respond to GreenBays question please?

I've had this issue for the last year. No matter what drive is plugged into the USB 3.0 port, the transfer rate is horrible.

I heard it's because of the lower amount of RAM in the router. Due to that, the transfer rate is throttled for write speed. Not sure how valid that is.

However, there are times that I get 27 mb/s but that's once in a blue moon. Non dependent on who else is on the network.

Samba
Looked at the File Explorer file copy screen which indicated the speeds.

WIreless, on 5 Ghz band, 20 feet away and tested close up too, I think 5 feet away.

I heard from reviews that performance issues could be traced back to the low amount of memory in the router.
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FurryNutz

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Re: Slow Upload speed to external drive
« Reply #27 on: January 19, 2020, 10:19:29 AM »

And what are your wired speeds like?
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GreenBay42

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Re: Slow Upload speed to external drive
« Reply #28 on: January 20, 2020, 06:23:13 AM »

D-Link HQ has replicated the issue and have sent it to the vendor/engineers to see if this is a chip limitation or something fixable with firmware. I do not expect a response back until after Chinese new year (they are off work 1/23-1/29).
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FurryNutz

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Re: Slow Upload speed to external drive
« Reply #29 on: January 20, 2020, 01:17:35 PM »

Thank you Sir.  ;)
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