Hello all,

 

     I have recently (1 month ago) assembled my unraid server. It is running 4.5.6 with 0 command line customizations (Vanilla install). I have 6 drives total, 5 in Raid (1 parity) and 1 cache drive. Motherboard is using IDE mode and seems happier with that opposed AHCI as I was getting some strange force mode lines upon boot with AHCI enabled. Disabled, it is a very clean boot.

 

My issue is when I write to the server I am receiving on average 60MB per second (to cache). If I write directly to Array, I get around 25MB per second (Still not bad). BUT, when I read from the array, I am getting on average 200kb persecond, which is uselessly slow. Is there something I have overlooked? I am on Gigabit network with all gigabit interfaces and switches. (home network).

 

Like I said, write is awesome, read is dismal?

 

Any help would be greatly appreciated

 

Hans

Since Gigabyte LAN uses all 8 conductors of the cables, it is possible for you to have a bad cable or port on the server/router in one direction only.

 

Try a different cable first. 

 

Post the output of

ifconfig eth0

and

ethtool eth0

 

 

 

 

 

Again, any and all help is appreciated.

 

Swapping cables did not help.

Like I said, write is awesome, read is dismal?

 

(a) do you perform your test on same data disk?

(b) Post a copy of your syslog and specify which disk you are using for testing

I'm reading from the array, so I would assume it would be parity + data disk? the problem happens when reading from any disk in the array.

 

 

Will update syslog when I can snap a picture of it

I'm reading from the array, so I would assume it would be parity + data disk? the problem happens when reading from any disk in the array.

 

 

Will update syslog when I can snap a picture of it

 

don't snap a picture, upload whole syslog file, lookup forum about how to find/upload syslog

 

read only read from data disk, write will write to both data and parity

Here is the syslog

 

 

Thanks again guys.

 

 

The drives are 2 WD ears 2TB (With the jumpers) and 2 samsung f2's 1.5 TB and 1 more WD ears 2TB as parity

syslog.txt

Here is the syslog

Thanks again guys.

The drives are 2 WD ears 2TB (With the jumpers) and 2 samsung f2's 1.5 TB and 1 more WD ears 2TB as parity

 

Nothing looks unusually except there is no ahci driver loading so i assume you are running in IDE mode yet i saw unRAID

try to setup NCQ on your disk. try to set "force NCQ disabled" to YES under setting from unRAID web GUI

 

Oct 16 00:10:46 Tower emhttp: shcmd (5): /usr/local/sbin/set_ncq sde 1 >/dev/null

Oct 16 00:10:46 Tower emhttp: shcmd (6): /usr/local/sbin/set_ncq sda 1 >/dev/null

Oct 16 00:10:46 Tower emhttp: shcmd (7): /usr/local/sbin/set_ncq sdb 1 >/dev/null

Oct 16 00:10:46 Tower emhttp: shcmd (: /usr/local/sbin/set_ncq sdc 1 >/dev/null

Oct 16 00:10:46 Tower emhttp: shcmd (9): /usr/local/sbin/set_ncq sdd 1 >/dev/null

Oct 16 00:10:46 Tower emhttp: shcmd (10): /usr/local/sbin/set_ncq sdf 1 >/dev/null

Correct, I am running in IDE mode as stated in the first post.

 

In UnRaids settings page, it is stating :

 

Force NCQ disabled:  YES

 

 

Do I need to disable NCQ some other way than whats listed in the servers settings page?

 

Would NCQ cause this?

Very strange, it seems to be reading much faster now?? Out of nowhere!  

 

 

I will keep an eye on it.........

 

Thanks for helping em look into it. You were very fast and it was much appreciated!

 

 

EDIT:  Come to think of it, I believe it was my Cisco router that pooped the connection. When I brought my new HTPC up , it had Lan and Wireless enabled at the same time and I believe that could have caused the router to have a "glitch". Once it was rebooted, it seemed better.

Correct, I am running in IDE mode as stated in the first post.

In UnRaids settings page, it is stating :

Force NCQ disabled:  YES

Do I need to disable NCQ some other way than whats listed in the servers settings page?

Would NCQ cause this?

 

So far, that is the only thing i will pay attention. Just for some experiments, try to set this one to "No" and reboot your system see how it goes.

 

The "yes" setting should disable NCQ and as long as your are not running AHCI mode, NCQ or not should not make any difference.

The "no" setting unRAID will leave it along, whatever disk has will be there.

The default setting for this one is "No", i am using IDE mode as well and mine is set to No.

 

Very strange, it seems to be reading much faster now?? Out of nowhere!  

I will keep an eye on it.........

Thanks for helping em look into it. You were very fast and it was much appreciated!

EDIT:  Come to think of it, I believe it was my Cisco router that pooped the connection. When I brought my new HTPC up , it had Lan and Wireless enabled at the same time and I believe that could have caused the router to have a "glitch". Once it was rebooted, it seemed better.

 

 

if you connect to unRAID through wireless then the response time might vary especially when your signal quality is not good

If the "glitch" is on network it shouldn't differentiate data read/write both are just data streams.

 

Correct, but this evening was the first night this new "HTPC" box was brought into the equation. As well, tonight was the first night I have had ANYTHING but praise for my Unraid box. Perhaps coincidental, but I am thinking the new box was/is causing the fuss.

 

As of right now, I am reading at 40MB per second.  Very Strange

Correct, I am running in IDE mode as stated in the first post.

In UnRaids settings page, it is stating :

Force NCQ disabled:  YES

Do I need to disable NCQ some other way than whats listed in the servers settings page?

Would NCQ cause this?

 

So far, that is the only thing i will pay attention. Just for some experiments, try to set this one to "No" and reboot your system see how it goes.

 

The "yes" setting should disable NCQ and as long as your are not running AHCI mode, NCQ or not should not make any difference.

The "no" setting unRAID will leave it along, whatever disk has will be there.

The default setting for this one is "No", i am using IDE mode as well and mine is set to No.

 

 

So, Me, just like you, am running IDE. You are saying I should change the "Yes" to a "No" ?

So, Me, just like you, am running IDE. You are saying I should change the "Yes" to a "No" ?

 

 

yes, by change to "No" unraid will do nothing. sometimes do nothing is better than do "something".

I wish there was a "Thank you" button.  Most helpful!  I will keep an eye on it and see what happens, I have it rebooting now with the "No" option checked and we will see what happens in the next days.

 

 

 

EDIT: Quick update, my box IS faster with the option set to "YES". (Was my default from the beginning, will leave it as so)