Forum Discussion

Aspirant

Dec 07, 2015

Solved

Readynas 102 extremely slow after update to 6.4.1

I have a Readynas 102 system with 2 2TB discs. there is about 230 GB of data on the discs. Yesterday I updated to 6.4.1, as suggested in the administration page. After that the system is extremely sl...

Installation & Upgrade

StephenB
Dec 07, 2015
What firmware are you running?

Is the antivirus service enabled.

bigstar

Aspirant

Dec 25, 2015

I have a ReadyNAS 316 with 6x4TB in RAID 5, since upgrading to 6.4.1 the the RAID is crippled down to around 5-10MB/s

I never had antivirus turned on and its not on.

I upgraded to 6.4.1 several days ago and never thought much of it, but then I started to see some problems with accessing files over samba, at first I thought the newly upgraded Windows 10 system was to blame so after testing on another PC and after ruling everything else out I realized the probem was related to the ReadyNAS FW update.. (5 days after upgrading to 6.4.1) I downgraded back to 6.4.0 hoping it would solve the problem only to realize that this it did not, performance still suffered, So moving forward I am back at 6.4.1..

At first I thought the problem was samba, but after running direct disk benchmarks I noticed the problem effects all disk operations.

RAID5

Timing buffered disk reads: 24 MB in 3.62 seconds = 6.62 MB/sec

Sansdisk flash drive connected to USB3 port

Timing buffered disk reads: 162 MB in 3.01 seconds = 53.77 MB/sec

JennC

NETGEAR Employee Retired

Dec 26, 2015

Hello bigstar,

Can you try disabling SMB then re-enable it and see if there any improvement?

6.4.2-T59 (Beta 1) is also already available, you might want to try it.

Regards,

bigstar
Aspirant
Dec 27, 2015
I disabled SMB and then re-enabled it, no difference.

I upgraded to the beta FW and the problem is now solved.

What was the bug?

root@nas-6E-51-C8:~# hdparm -Tt /dev/md127

/dev/md127:
Timing cached reads: 1882 MB in 2.00 seconds = 940.34 MB/sec
Timing buffered disk reads: 1014 MB in 3.01 seconds = 337.34 MB/sec

Thank you very much.
bigstar
Aspirant
Dec 27, 2015
After upgrading to 6.4.2-T59 (Beta 1) it seems like file delete operations and directory listing are still slow compared to 6.4.0

A folder with 3,000 files can take up to 30 seconds to list via SFTP and some files take up to 5 seconds for the delete operation to complete.

The RAID isn't scheduled to defrag for another couple weeks, but somehow I don't think that's the reason for the slowness.
- BrianL2
  NETGEAR Employee Retired
  Dec 28, 2015
  Hi bigstar,
  
  Does the same behavior show when using SMB file protocol? or is this problem only specific to SFTP?
  
  Kind regards,
  
  BrianL
  NETGEAR Community Team
  - at4roku1
    Tutor
    Dec 28, 2015
    Hello,
    
    with 6.4.1 I also had the descibed problem with showing the thumbnials in folders with many pictures extremly slow. Deactivation of AV on NAS102 or WIN10 did not solve the problem. After updating to 6.4.2 T59 the problem is solved.
    
    There`s only one minor issue: Before 6.4.1 I had transfere rates between 90-100 MB/s on a 1 GB file. Now it`s between 60-70 MB/s. It only recovers to 90-100 MB/s after I restart the NAS. Unfortunately it becomes slow again after some minutes/hours.
    
    Is there I file in the system log that could give any indications? Any suggestions would be appreciated. Thank you,
    
    Robert