Ever sence moving from Intel Mac to Mac Studios I have run into some interesting issues that I have been unable to solve.
1. Speeds on Promise Pegasus32 R6 have been subpar based on the TB3 standard from what I can really gather. I at best see around 550 - 800MB/s Writes and 450 - 750MB/s Read. I almost see these similar speeds with USB-C 10Gbps. I have tried numerous cables (active and passive).
2. And this is a extremely weird one. (Don't have this at all when using USB-C Drives Directly) When attempting to write files to the PP32 from lets say chrome or safari, it will just end up circle of death and crash the browsers to halt, then I have to force quit, but after that I must reboot as it will just happening again sooner and sooner.
I have been able to replicate this by saving indivdual files, like photos, one after another and then it will cause the halt, this could freeze the browser for 2 - 10 mins then maybe I will be able to save again to the PP32 for a few more times before it happens again and must reboot.
One thing I do notice is that the process of "Open and Save Panel Service" for lets say google does fail and error out, but it seems like the system is either way too fast and cannot catch up or extremely slow.
I have seen some talk about "If a RAID volume has a 16kB stripe size, it is known to cause kernel panics on M-series chips. You may need to back up your data and reformat the array using a 64kB stripe unit size (or convert to a RAID 4/5)" and wonder if there is something here on my end.
I know its a long shot and a lot there, but I have been at this for a long time trying to figure this out, from M1 to M4, just seems I am having issues directly with Pegasus in general and its not happy with Apple Silicone. (Purchased a new M4 fresh out of box thinking it would solve issues and its the same thing.)
Update: as of writting this, I tested brand new TB4/5 Active cables and saw same read and write speeds above. Randomly grabbed a passive TB4 Cable and seeing speeds now reach 1100-MB/s Read and 770MB/s Write which seems to be more aligned with expectations for TB3 and RAID5. Not sure why the actives are reverting to USB speeds as the run is over 3 meters, but it is interesting.
