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Author Topic: bug report: Low-performance data transfers using the USB3 port  (Read 14566 times)

hydra3333

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Hello. Bug Reports:

DIR-880L. Australia. Firmware 1.00

1. Admin Password is not restored when a saved configuration is restored

When reloaded a saved configuration, the admin password is reset to blank.  I have to re-enter and save a new password.  
Test results:
- Tested twice with the same result.
- This is a bit of a security issue if you don't notice it ;)

2. Low-performance data transfers using the USB3 port with a 6 month old USB3 4Tb Seagate external hard drive

Copying a 1GB from the Router with attached USB3 4Tb hard drive -> to an i3820 PC connected by ethernet cable gives only 11-12MB/s.
USB 3 cable = 1m long.
Test results:
- The i3820 transfers files to and from another PC next to it (on the same router) at gigabit speeds.
- The the USB3 4Tb hard drive directly connected into the i3820 PC transfers at a higher rate, as expected.
- first time trying to write to the router's samba share from the i2830 I get the error message "There is a problem accessing \\xx.xx.xx.xx\Seagate_Expansion_3K0R1" ...
- after a power cycle of the router, I can copy from the i3820 -> to the router at 23MB/s but copying from the router to an SSD on the i3820 is only 11MB/s.
- a second attempt at copying from the i3820 to the router (the same file) ... 17MB/s ...
- repeated read and write twice more, consistent results: 19MBs write, but only 11MBs read.
- Unplugged the USB3 drive from the router and plugged it directly into the i3820's USB3 port using the same cable, and it averaged 160MBs copying a 1GB file from the USB3 drive -> to the i3820's SSD.
- Copied 54Gb of files (TV captures for offline viewing) from the PC next to the i3820, to the i3820 via ethernet and the router's routing
   ... it averaged 98MBs ... my old DIR-655 appeared "5% faster" with a slightly higher average
   ... the DIR-880L was a simple router swap-over so it is the same cabling etc)

PS waiting for the new AU firmware to be posted to the dlink.com.au website ;)
« Last Edit: July 12, 2014, 11:01:37 PM by hydra3333 »
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FurryNutz

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Re: Bug Reports
« Reply #1 on: July 12, 2014, 08:31:20 AM »

Hello. Bug Reports:

DIR-880L. Australia. Firmware 1.00

1. Admin Password is not restored when a saved configuration is restored

When reloaded a saved configuration, the admin password is reset to blank.  I have to re-enter and save a new password.  
Test results:
- Tested twice with the same result.
- This is a bit of a security issue if you don't notice it ;)
We have noticed this as this maybe a design security safety in case user forget the PW, reloading the config file still allows access with a blank PW while still preserving the custom configurations, I have asked about this.

2. Low-performance data transfers using the USB3 port with a 6 month old USB3 4Tb Seagate external hard drive

Copying a 1GB from the Router with attached USB3 4Tb hard drive -> to an i3820 PC connected by ethernet cable gives only 11-12MB/s.
USB 3 cable = 1m long.
Test results:
- The i3820 transfers files to and from another PC next to it (on the same router) at gigabit speeds.
- The the USB3 4Tb hard drive directly connected into the i3820 PC transfers at a higher rate, as expected.
How so?  ???

- first time trying to write to the router's samba share from the i2830 I get the error message "There is a problem accessing \\xx.xx.xx.xx\Seagate_Expansion_3K0R1" ...
- after a power cycle of the router, I can copy from the i3820 -> to the router at 23MB/s but copying from the router to an SSD on the i3820 is only 11MB/s.
- a second attempt at copying from the i3820 to the router (the same file) ... 17MB/s ...
- repeated read and write twice more, consistent results: 19MBs write, but only 11MBs read.
- Unplugged the USB3 drive from the router and plugged it directly into the i3820's USB3 port using the same cable, and it averaged 160MBs copying a 1GB file from the USB3 drive -> to the i3820's SSD.
- Copied 54Gb of files (TV captures for offline viewing) from the PC next to the i3820, to the i3820 via ethernet and the router's routing
   ... it averaged 98MBs ... my old DIR-655 appeared "5% faster" with a slightly higher average
   ... the DIR-880L was a simple router swap-over so it is the same cabling etc)
Some of these rates maybe client side HW dependent upon what speeds are supported by the HW rather than the router HW. You need to detail more on what your PCs are seeing in comparison to what the router is doing.

FYI>>Router USB HDD Max Size FAQ

PS waiting for the new AU firmware to be posted to the dlink.com.au website ;)

Currently v1.01 has been released:
http://forums.dlink.com/index.php?topic=59905.0
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ktriebol

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Re: Bug Reports
« Reply #2 on: July 12, 2014, 11:30:26 AM »

I agree with Hydra on the admin password thing. Your custom password should be reinstated when you restore your configuration. If you don't know what your password was, you will just have to do a factory reset and create a new configuration from scratch.
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FurryNutz

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Re: Bug Reports
« Reply #3 on: July 12, 2014, 11:59:06 AM »

I'll try to find out the behavior, however I personally would rather retain the configuration and have a blank PW after a restore should I some how forget the PW. You can always input a new PW after the restoration process has completed.  ;)
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hydra3333

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Re: Bug Reports
« Reply #4 on: July 12, 2014, 07:54:01 PM »

Some of these rates maybe client side HW dependent upon what speeds are supported by the HW rather than the router HW. You need to detail more on what your PCs are seeing in comparison to what the router is doing.
Thanks.

The combination of "same equipment used" and the data transfer speeds reported seem to indicate it's the DIR-880L router HW, since the other hardware and cabling is unchanged.

eg
  • repeatably, the USB3 external HD directly connected into the PC demonstrates copy times (and Windows7 reports transfer rates) of about 160 MB/s
  • repeatably, copying many gigabytes from one PC to another PC (via the router) demonstrates copy times (and Windows7 reports transfer rates) of about 100 MB/s
  • repeatably, the same USB3 external HD attached to the Router USB3 port gives about 11 MB/s read rate as reported by Windows7 and using the same cabling and file
  • repeatably, the same USB3 external HD attached to the Router USB3 port gives about 19 MB/s write rate as reported by Windows7 and using the same cabling and file

I'm very open to suggestions on what to test differently, to provide more detail on what the PCs are seeing in comparison to what the router is doing.  

If the router supports ftp (I don't think it does) I'm happy to use filezilla to test transferring files back and forth. I'm using the SAMBA file shares and don't want to install more software (filezilla is already installed).
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FurryNutz

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Re: Bug Reports
« Reply #5 on: July 12, 2014, 07:58:25 PM »

Thanks for the details. Anything could be possible. Not sure if the behavior and the design of the router is to have the same performances as direct to PC. I personally have never found the same performances as direct connect with PCs. Routers have to process many things and in doing so, there maybe performance differences seen on USB with routers than with PCs.

You could test the newer FW.
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hydra3333

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Re: Bug Reports
« Reply #6 on: July 12, 2014, 10:40:58 PM »

Not sure if the behavior and the design of the router is to have the same performances as direct to PC.
I personally have never found the same performances as direct connect with PCs.
:D not expecting same performance as direct-connect-to-PC, just > USB2 read speeds / "100Mbs" would be nice.

Routers have to process many things and in doing so, there maybe performance differences seen on USB with routers than with PCs.
OK

You could test the newer FW.
Yes, I will try that in a few days (real life is intervening).

PS, no other network activity was occurring to interfere with the transfer test results.
« Last Edit: July 12, 2014, 11:02:47 PM by hydra3333 »
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FurryNutz

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Re: bug report: Low-performance data transfers using the USB3 port
« Reply #7 on: July 14, 2014, 08:05:04 AM »

Let us know if you see any differences with new FW.
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Doctor Doom

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Re: bug report: Low-performance data transfers using the USB3 port
« Reply #8 on: July 16, 2014, 06:51:50 AM »

When doing the USB speed testing, ensure that UPNP media and webfile access are disabled. Leave Samba enabled. That should help.

All DIR series routers do not transfer the password when saving/restoring configuration. This actually makes sense if you have an old configuration or multiple configurations and you rotate passwords. You will never know which config has what password and that is the last thing you need when you need to get the router online with screaming kids needing to finish their assignment. The lack of password when restoring a configuration is not a security issue. You need physical access to the router or at least the existing router admin password to gain access. Even with high end firewall, you'd need physical access to reset the box to log in and restore the configuration.

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FurryNutz

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Re: bug report: Low-performance data transfers using the USB3 port
« Reply #9 on: July 16, 2014, 06:57:59 AM »

Thanks for sharing the additional info on USB DR Doom. Will keep this in mind for future reference.

When doing the USB speed testing, ensure that UPNP media and webfile access are disabled. Leave Samba enabled. That should help.

All DIR series routers do not transfer the password when saving/restoring configuration. This actually makes sense if you have an old configuration or multiple configurations and you rotate passwords. You will never know which config has what password and that is the last thing you need when you need to get the router online with screaming kids needing to finish their assignment. The lack of password when restoring a configuration is not a security issue. You need physical access to the router or at least the existing router admin password to gain access. Even with high end firewall, you'd need physical access to reset the box to log in and restore the configuration.


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hydra3333

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Re: bug report: Low-performance data transfers using the USB3 port
« Reply #10 on: July 26, 2014, 02:02:13 AM »

Thanks, will keep that in mind. 

My 880L has effectively karked it so am hoping to see a replacement which I can try some tests on.
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FurryNutz

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Re: bug report: Low-performance data transfers using the USB3 port
« Reply #11 on: July 26, 2014, 09:05:18 AM »

Let us know it goes with the new unit.
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FurryNutz

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Re: bug report: Low-performance data transfers using the USB3 port
« Reply #12 on: August 08, 2014, 09:19:28 AM »

Any status on this?  ???

Thanks, will keep that in mind. 

My 880L has effectively karked it so am hoping to see a replacement which I can try some tests on.
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radubn

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Re: bug report: Low-performance data transfers using the USB3 port
« Reply #13 on: February 09, 2015, 03:55:50 AM »

I am interested in this, too.

When I copy some files from my PC to the external HDD attached to the USB 3.0 port, I get about 25-30MB/s. This is not USB 3.0 speed. I'll try with the HDD plugged in the USB 2.0 connector tonight.
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FurryNutz

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Re: bug report: Low-performance data transfers using the USB3 port
« Reply #14 on: February 09, 2015, 07:47:28 AM »

What kind of speeds do you see if you connect the USB drive to a PC?
Is the USB drive 3.0 supporting?

I am interested in this, too.

When I copy some files from my PC to the external HDD attached to the USB 3.0 port, I get about 25-30MB/s. This is not USB 3.0 speed. I'll try with the HDD plugged in the USB 2.0 connector tonight.
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