Alright, here's my situation:
I'm currently running High Sierra from a PCIe SSD. This is a 256gb drive from a "trash can." The owner of the computer had filled it to the brim, and I installed a 2TB OWC drive for him-he then gave me the original 256gb, which made its way into my MP via a PCIe adapter.
I'm booting High Sierra(most recent PB) from the drive. I did a clean install and have it formatted APFS. When I first installed the drive, it was VERY slow both in use and as measured by Black Magic(about 100 mb/s read and write). I attributed this to the fact that it had been essentially full.
TRIM is on-since this is an Apple drive I didn't do anything to turn it on. After running the computer for a day or two, my speeds are to about 350mb/s, but I think the drive has a lot more potential than this(I'm running SL off a 128gb MBA drive in this computer, and it does in the 600mb+ range).
With other computers in the past when I've had slow SSDs, I've booted into SUM and run FSCK a few times. One of the lines I always see is "Trimming unused blocks" or something to that effect and it will usually make a noticeable(and measurable) difference in the speed.
I don't get that with this computer, though. When I run FSCK, I see nothing to that effect, and running it a few times made no difference in the speed.
If I just let the computer sit(turned on) a few days, will it likely just TRIM in its idle time? I'm going to be away from it for a few days so I'm debating letting it just do that.
Aside from that, is there anything else I can do to force it to reclaim some of the "free" space on the drive?
As an aside, has anyone else here run SL off a PCIe SSD? I have a specific reason for needing SL on this computer(software compatibility) and am running it on the PCIe just because. It still amazes me at how fast it is.
I'm currently running High Sierra from a PCIe SSD. This is a 256gb drive from a "trash can." The owner of the computer had filled it to the brim, and I installed a 2TB OWC drive for him-he then gave me the original 256gb, which made its way into my MP via a PCIe adapter.
I'm booting High Sierra(most recent PB) from the drive. I did a clean install and have it formatted APFS. When I first installed the drive, it was VERY slow both in use and as measured by Black Magic(about 100 mb/s read and write). I attributed this to the fact that it had been essentially full.
TRIM is on-since this is an Apple drive I didn't do anything to turn it on. After running the computer for a day or two, my speeds are to about 350mb/s, but I think the drive has a lot more potential than this(I'm running SL off a 128gb MBA drive in this computer, and it does in the 600mb+ range).
With other computers in the past when I've had slow SSDs, I've booted into SUM and run FSCK a few times. One of the lines I always see is "Trimming unused blocks" or something to that effect and it will usually make a noticeable(and measurable) difference in the speed.
I don't get that with this computer, though. When I run FSCK, I see nothing to that effect, and running it a few times made no difference in the speed.
If I just let the computer sit(turned on) a few days, will it likely just TRIM in its idle time? I'm going to be away from it for a few days so I'm debating letting it just do that.
Aside from that, is there anything else I can do to force it to reclaim some of the "free" space on the drive?
As an aside, has anyone else here run SL off a PCIe SSD? I have a specific reason for needing SL on this computer(software compatibility) and am running it on the PCIe just because. It still amazes me at how fast it is.
