[MB Live Duo] - AFP: Really bad performance after rebooting the device some times

WD Legacy Products My Book Live Duo
1

Hi,

I have 2 identical MBLD and I used to spend around 15 minutes to copy a 20 GB to them. After the reboot it is talking about 2 hours (the second device is still normal). I am not sure what is happening, but copying files to the server using AFP (I use a mac) it is extremely slow after a reboot.

I ran a top command on the slow device and here it what I can see:

PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
2974 root 20 0 0 0 0 D 41.0 0.0 4:27.90 flush-9:3
7279 root 20 0 5056 2688 1600 R 0.7 1.1 0:03.19 top
4142 root 20 0 3712 1216 896 S 0.3 0.5 0:00.08 ifplugd
1 root 20 0 4352 1344 1024 S 0.0 0.5 0:00.86 init
2 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kthreadd
3 root 20 0 0 0 0 S 0.0 0.0 0:00.02 ksoftirqd/0
4 root RT 0 0 0 0 S 0.0 0.0 0:00.00 watchdog/0
5 root 20 0 0 0 0 S 0.0 0.0 0:00.00 events/0
6 root 20 0 0 0 0 S 0.0 0.0 0:00.02 khelper
9 root 20 0 0 0 0 S 0.0 0.0 0:00.00 async/mgr
89 root 20 0 0 0 0 S 0.0 0.0 0:00.00 sync_supers
91 root 20 0 0 0 0 S 0.0 0.0 0:00.00 bdi-default
93 root 20 0 0 0 0 S 0.0 0.0 0:01.68 kblockd/0
98 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ata/0
99 root 20 0 0 0 0 S 0.0 0.0 0:00.00 ata_aux
101 root 20 0 0 0 0 S 0.0 0.0 0:00.00 kseriod
121 root 20 0 0 0 0 S 0.0 0.0 0:00.00 rpciod/0

I have a second, identical, MBLD that does not show that flush-9:3 ( which seems to be taking a lot of my memory and cpu in the first device - code above). What can I do to solve this problem?

Thanks
Gilson

2

You can refer the link mentioned below to troubleshoot for the issue.

https://support.wdc.com/knowledgebase/answer.aspx?ID=18626&lang=en

3

Thanks for the replay. I had ran through that troubleshooting before. As I said, I have two identical devices on the same network connected to the same router. I am also running the data transfer task from the same machine. Of course, the tests are run on the same conditions. I also connected the slow device to the same Ethernet port that the faster one is connected and the results are the same.

What else can I try?

4

Hey - anything else I can try? I am desperate here. I have just transferred a 13 GB file to the normal MBLD it took 7 minutes. I am not transferring the same file (using same network, source computer, file etc) and it took 2 hours. I even connected the slow device to the router using the same network cable as the fast one was connected. The result is the same.

PS.: The fast device connected to the router using the slow device ethernet cable - the file copy test was fast! It took 7 minutes. This eliminates a lot of variables (as I mentioned before, I had ran through the troubleshooting Network: Common Causes and Solutions for Slow Data Transfer Speeds and was able to isolate it to the slow device.

Thanks

5

Is there any kind of device reset that won’t delete the data? I ran the slow NAS in RAID 0.