Looking for help with performance issue

[ck17]

I made my second NAS using FreeNas. The first is running fine - but i needed more space.
The new NAS has 5 8TB drives making one Logical volume using Raid5.

the System has 32 GB RAM


my Problem is, that the Response time very often really bad. listing a Folder (from my Windows 10 pc) can took minutes. not Always, but often.
that was never an issue with the other NAS.
i could not find a difference in the Settings. so Maybe someone has a clue, what could cause the Problem?

thanks
David

 

[m0nkey_]

Please post the output of zpool status XADUX using the [ code ] tags.

 

[ck17]

Code:

Navopeko{srzdme} /mnt/XADUX/usr/srzdme > zpool status
  pool: XADUX
 state: ONLINE
  scan: scrub repaired 0 in 0 days 07:23:24 with 0 errors on Mon Aug 27 07:23:24 2018
config:
		NAME											STATE	 READ WRITE CKSUM
		XADUX										   ONLINE	   0	 0	 0
		  raidz1-0									  ONLINE	   0	 0	 0
			gptid/01615769-8ab3-11e8-a0c8-6045cb84ca7c  ONLINE	   0	 0	 0
			gptid/01e656a1-8ab3-11e8-a0c8-6045cb84ca7c  ONLINE	   0	 0	 0
			gptid/0272f871-8ab3-11e8-a0c8-6045cb84ca7c  ONLINE	   0	 0	 0
			gptid/02fa24ad-8ab3-11e8-a0c8-6045cb84ca7c  ONLINE	   0	 0	 0
			gptid/037db400-8ab3-11e8-a0c8-6045cb84ca7c  ONLINE	   0	 0	 0
errors: No known data errors
  pool: freenas-boot
 state: ONLINE
  scan: scrub repaired 0 in 0 days 00:00:10 with 0 errors on Wed Aug 29 03:45:10 2018
config:
		NAME		STATE	 READ WRITE CKSUM
		freenas-boot  ONLINE	   0	 0	 0
		  ada0p2	ONLINE	   0	 0	 0
errors: No known data errors
Navopeko{srzdme} /mnt/XADUX/usr/srzdme >

 

[Chris Moore]

Logical volume using Raid5.

You mean RAIDz1.

 

[Chris Moore]

that was never an issue with the other NAS.
i could not find a difference in the Settings. so Maybe someone has a clue, what could cause the Problem?

Please provide a rundown of the hardware in both systems for comparison.

In your SMB configuration, you may want to add the following Auilary parameters:

Code:

browsable = yes
ea support = no
store dos attributes = no
map archive = no
map hidden = no
map readonly = no
map system = no

I have been using these for several years now because they were supposed to make access time faster.

 

[ck17]

Yes, i mean RAIDz1 (sorry).

the Hardware Looks as follows:
'old' hardware:
- Intel Core i5 4430 BOX (LGA 1150, 3GHz)
- Kingston KVR13N9S8K2/8 (4GB, DDR3-1333, DIMM 240) -> 32 GB
- ASUS H97M-PLUS (LGA 1150, H97, mATX)
- ADATA ADATA SSD SX300 (64GB, mSATA) (for OS)
- 6 x Western Digital Red GB -> 25 GB (Raidz1)

'new' hardware:
- Intel Core i5 7400 BOX (LGA 1151, 3GHz)
- ASUS PRIME B250M-C/CSM (LGA 1151, Intel B250, mATX)
- Corsair Vengeance LPX (4x, 8GB, DDR4-2400, DIMM 288) -> 32 GB
- Kingston UV500 (120GB, M.2 2280) (for OS)
- 5 x WD Purple (8TB, 3.5", Server, NAS) -> 40 GB (Raidz1)

in times, where Response is poor, i think i hear the drives 'working'.. but i cannot figure out, what causes that. there is no scrub process or something like this running then.

 

[Chris Moore]

5 x WD Purple (8TB, 3.5", Server, NAS) -> 40 GB (Raidz1)

Purple drives are optimized for WRITE, not READ and read performance on FreeNAS is already the hard part. You have bought hardware that is not appropriate to the task.

in times, where Response is poor, i think i hear the drives 'working'.. but i cannot figure out, what causes that.

That is probably the drive doing some internal shuffling of the data. I wouldn't be shocked to find out that these are actually SMR drives or some other funny technology that makes them able to write faster than they read.
There has been a lot of discussion about them on the forum ever since they launched.

Look: https://forums.freenas.org/index.php?threads/wd-purple.19322/#post-108266

 

[ck17]

During the last few months, i have replaced all drives (wd purple, 8 TB) with new wd red, 8 TB. the replacing took some time but was easy and without any problems. however, the performance issue i have, is still the same. sometimes response is very poor, the disks are working (i can hear that), but i cannot figure out, what causes the delays in response (to my windows machine). sometimes i takes several minutes, before a file is opened.

does anyone have an idea, how to track this performance issues?