Hi All,

I am seeing an issue where the cache pool consistently slows down from +100mb/s to under 30 Mb/s.  I have an ssd pool consisting of two intel 120gb and one Samsung 840 240 ssd.  I have tried many different large files and always see the same issue.  Confirmed that thay are copied to the pool and that the pool is quite empty and no other large disk intensive activity is present.

 

Looking for suggestions.

 

Cheers

Are you regularly trimming the SSDs?

 

If not do it and test again, then install the dynamix trim plugin.

I just installed the plug-in it and will see if it makes a difference.

 

The unraid install is under 2 weeks old and the cache is pretty empty.  It has been like that from the start.  Do you think it will improve results?

I have an ssd pool consisting of two intel 120gb and one Samsung 840 240 ssd. 

 

Is it an Intel 520 SSD? Apparently they suffer from slow write speeds. Also with some Intel drives, the write speed is with compressible data - random data is much slower.