6.1 Mac Pro slow SSDs

[pierre1610]

I have a fair bit of storage but they all get really low speeds on AJA and black magic.

Internal 1TB - 514MB/s Write - 1420MB/s Read
Lacie LBD TB2 Dual SSD on RAID0 - 202MB/s Write - 1290MB/s Read
Sonnet Fusion - 90MB/s Write - 1321MB/s Read

Why is the write speed on everything so slow?

Running High Sierra 10.13.6

 

[sbarton]

what are you using to benchmark?

 

[pierre1610]

what are you using to benchmark?

AJA and Blackmagic speed test. Getting the same of both programs roughly
[doublepost=1539899560][/doublepost]is it bad to enable trim on all ssd's?

The sonnet is totally blank now as i formatted it and it is REALLY slow!!!

 

[sbarton]

Yes you've got something going on for sure. I have the same setup (Apple 1TB internal) including the LBD 1TB over TB2. I get over 1000 r/w for both.

Did you just notice this performance decrease - eg. was there anything that changed in your configuration recently.

I would try these in this order:

1.) PRAM Reset
2.) SMC reset (shutdown and unplug for 10 sec)
3.) Unplug everything except your display

Retest the internal speed and see what you get. Idea is to take as much out of the equation.

 

[pierre1610]

Yes you've got something going on for sure. I have the same setup (Apple 1TB internal) including the LBD 1TB over TB2. I get over 1000 r/w for both.

Did you just notice this performance decrease - eg. was there anything that changed in your configuration recently.

I would try these in this order:

1.) PRAM Reset
2.) SMC reset (shutdown and unplug for 10 sec)
3.) Unplug everything except your display

Retest the internal speed and see what you get. Idea is to take as much out of the equation.

Thanks for the reply. I enabled TRIM on all drives which fixed the newly formatted drives. I then copyed all data to another drive and rebuilt RAID on the oldest drive which fixed the speed issue.