homenas-diagnostics-20171224-1941

 

I have put a dual port mellanox connectx 2 card in my unRAID box and single port cards in my 2 workstations (Ryzen builds) I think I have them mostly configured but I'm getting high and low spikes as shown in the clip below would setting bonding help throughput? The workstation this was on has an ssd that the file was transferred from and onto the ramdisk for testing I seem to get random results sometimes it will start out at a 900 to a gig and drop to around 400-450 MB\s sometimes I only get 250 MB\s and will drop and actually stop for a few seconds randomly just wondering if there may be some settings I should set posting diags in the even something is glaringly apparent

 

 

 

 

 

Edited December 25, 20178 yr by mrbilky

There'll be a memory buffer somewhere being filled or emptied.    What are you reading from? If your unRAID array is HDDs, then you'll only get the fastest speed of the HDD (about 200MB/s on a good 8TB NAS drive).  If it's from your cache drive, then it may be thermal throttling, especially if it's an M.2 drive.  A lot of those can't sustain long fast reads.

32 minutes ago, HellDiverUK said:

There'll be a memory buffer somewhere being filled or emptied.    What are you reading from? If your unRAID array is HDDs, then you'll only get the fastest speed of the HDD (about 200MB/s on a good 8TB NAS drive).  If it's from your cache drive, then it may be thermal throttling, especially if it's an M.2 drive.  A lot of those can't sustain long fast reads.

 

Thanks for the reply that may explain allot I believe I have set up my testing right I created a test share  on my box and set it to cache only as my cache is 2 sata ssd's but that's a good point when copying back and forth while testing my ssd's showed temps at high 60C and the memory buffer also may explain why when I first sent the file it shows that type of info I posted but if I do it a second and 3rd time it flattens out to around 450MB\s speeds more in line with sata ssd's will look into it further. Have you ever heard of the transfer completely stopping for a few seconds and picking back up that was another anomaly i've seen thanks again!