Did party check get really fast?

[ShaneH]

Hello,

I have Unraid 6.8.2 with up time of 45+ days.

 

My parity check speed has been:

01 Jan  = 145 MB/s      0 error
01 Feb  = 147 MB/s      0 error
01 Mar  = 147 MB/s      1 error
01 Apr  = 314 MB/s      0 error            Double speed !

 

Did Unraid really increase the parity check speed (that much!) or do I have a problem?

Thank you

[trurl]

Likely that last one didn't complete and it is just a calculation artifact.

 

Post your diagnostics if you want a better informed answer.

[ShaneH]

This is the first parity check that I have ever 'paused'.    I hit 'pause' once at around 30%.

Diagnostics attached.

tower-diagnostics-20200402-1740.zip

[trurl]

1 hour ago, ShaneH said:

This is the first parity check that I have ever 'paused'. 

Those will not produce the correct result.

[ShaneH]

OK.    Case closed.   Thank you

[itimpi]

11 hours ago, ShaneH said:

This is the first parity check that I have ever 'paused'.    I hit 'pause' once at around 30%.

Diagnostics attached.

It is a known issue that using "Pause" gives incorrect values for the speed of a parity check.  

 

It might be worth pointing out that if you are using the Parity Check Tuning plugin to handle the pause/resume process it will correct the speed shown in the history to show what was actually achieved as one of its capabilities.