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Problem with getting gbps one way

Tags:
  • Speed
  • Networking
  • Servers
Last response: in Networking
December 24, 2013 12:04:34 PM

Hi,

I am having an issue getting full speed with my server to my htpc. When I copy a file from the server to the htpc it transfers at roughly 60-80mbps. When I copy a file from the htpc to the server it transfers at 8-12mbps. Files are typically 5-8gb iso files.

I have full cat5e cables, gigabit nics in both machines, and a netgear wndr4300.

Since everything related to the hardware is gig compatible I'm assuming this is a software issue. Any advice is appreciated.

Happy holidays,
Jon

More about : problem gbps

December 24, 2013 12:24:31 PM

It's more likely to be an issue or limitation with the disk IO subsystems than the network.

I suggest downloading a copy of iperf and use it to test the network performance between the two computers - most should be able to achieve several hundred megabits per second on a gigabit connection.
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December 24, 2013 12:36:12 PM

Here is my information from iperf. Any next steps from here?

C:\Users\Administrator>iperf.exe -c
iperf: option requires an argument -- c
Usage: iperf [-s|-c host] [options]
Try `iperf --help' for more information.

C:\Users\Administrator>iperf.exe -c 192.168.1.9
------------------------------------------------------------
Client connecting to 192.168.1.9, TCP port 5001
TCP window size: 64.0 KByte (default)
------------------------------------------------------------
[ 3] local 192.168.1.12 port 63419 connected with 192.168.1.9 port 5001
[ ID] Interval Transfer Bandwidth
[ 3] 0.0-10.0 sec 455 MBytes 381 Mbits/sec
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December 24, 2013 1:27:06 PM

381 Mbits/sec on a gig link isn't blazing but it isn't slow enough to really call it broken.

Can you try -d (dual test - tests send and receive simultaneously) and -r (trade-off - tests one way then the other) and post those results?
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December 24, 2013 1:42:03 PM

DeauteratedDog said:
381 Mbits/sec on a gig link isn't blazing but it isn't slow enough to really call it broken.

Can you try -d (dual test - tests send and receive simultaneously) and -r (trade-off - tests one way then the other) and post those results?


So after doing the iperf I did an IO test on the hard drives.

Results are as follows using Parkdale tester.
HTPC - 173mbps write, 199mbps read
Server - 6.4mbps write, 77.6mbps read

The server has a WD20EARS in it. Looking at benchmarks on it http://www.storagereview.com/western_digital_caviar_gre... here the read is kind of in line. Write is bad. Hard drive failing or is something else causing this?


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December 24, 2013 2:10:48 PM

Yep, something is wrong there. Are you running any drive encryption software, or some kind of mirroring/backup software, or anything like that? You might give it a try with your anti-virus software shut-down...
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December 24, 2013 2:33:15 PM

DeauteratedDog said:
Yep, something is wrong there. Are you running any drive encryption software, or some kind of mirroring/backup software, or anything like that? You might give it a try with your anti-virus software shut-down...


Nope it has a fresh install of windows on it. The only thing it has on it is my iso files for my DVDs since the wife hates looking at them and pictures. It doesn't have an antivirus on it and I do my back ups with an external drive by hand. Bout the only thing I know to do from here is pull the drive and put it in another computer and retest it. Any other advice?

The help is much appreciated by the way.
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December 24, 2013 4:22:09 PM

Trying it in another computer is a good idea.

Also, grab one of the tools that can extract the SMART info from the drive and see if it is reporting an error.

Maybe write caching is turned off?

Good luck.
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December 25, 2013 6:57:36 AM

DeauteratedDog said:
Trying it in another computer is a good idea.

Also, grab one of the tools that can extract the SMART info from the drive and see if it is reporting an error.

Maybe write caching is turned off?

Good luck.


Information from SMART Test - It failed after 26 seconds and reported error codes.

Test Option: QUICK TEST
Model Number: WDC WD20EARS-00MVWB0
Unit Serial Number: WD-WMAZA3920485
Firmware Number: 51.0AB51
Capacity: 2000.40 GB
SMART Status: PASS
Test Result: FAIL
Test Error Code: 06-Quick Test on drive 1 did not complete! Status code = 07 (Failed read test element), Failure Checkpoint = 97 (Unknown Test) SMART self-test did not complete on drive 1!
Test Time: 09:50:36, December 25, 2013

I'm assuming if it fails with this test it's hardware related?

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Best solution

December 25, 2013 8:51:29 AM

I don't really know, but I expect so; I would replace it.
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