Hi Folks,
From the spec sheets I should be getting around 500 MB/s transfers with my SSD but EtreCheck reports 260 MB/s write, 272 MB/s read.
I followed various threads about enabling TRIMS which I did and the output from the enable command indicated success. I rebooted in single user mode and ran fsck -fy and also in recovery mode and ran the disk first aid but neither of these said 'trimming unused blocks'. However, I now see TRIM Support enabled in the System Report - SATA/SATA Express section for the SSD. I reran the EtreCheck but the transfer speeds are the same - from another post I gather it doesn't fix things retrospectively.
I'm running High Sierra on a 11,3 iMac (mid-2010). The SSD was installed a few years ago by a local shop and my perception is that it is a bit slower than when it was first installed. They were replacing a genuine apple SSD (or one which came with the machine anyway) and if I was to be honest, it might have felt slower just after the replacement, but very subjective (in retrospect I should have measured it). I don't actually know for sure now anyway, as I was running Etre Check to fix something else and noticed the slow SSD report.
I've got two drives in my iMac:
disk2s1 APFS / 500GB Samsung SSD 850 EVO
disk0s2 Journaled HFS+ /Volumes/Macintosh HD 2 ST2000DM006-2DM164
I wondering if there is some other hardware limitation, like the SATA interface itself or a cable? Is there any further tweaking I can do to make this as fast as it should be? Please don't tell me that my mac is just too old!!
Thank you,
David.
From the spec sheets I should be getting around 500 MB/s transfers with my SSD but EtreCheck reports 260 MB/s write, 272 MB/s read.
I followed various threads about enabling TRIMS which I did and the output from the enable command indicated success. I rebooted in single user mode and ran fsck -fy and also in recovery mode and ran the disk first aid but neither of these said 'trimming unused blocks'. However, I now see TRIM Support enabled in the System Report - SATA/SATA Express section for the SSD. I reran the EtreCheck but the transfer speeds are the same - from another post I gather it doesn't fix things retrospectively.
I'm running High Sierra on a 11,3 iMac (mid-2010). The SSD was installed a few years ago by a local shop and my perception is that it is a bit slower than when it was first installed. They were replacing a genuine apple SSD (or one which came with the machine anyway) and if I was to be honest, it might have felt slower just after the replacement, but very subjective (in retrospect I should have measured it). I don't actually know for sure now anyway, as I was running Etre Check to fix something else and noticed the slow SSD report.
I've got two drives in my iMac:
disk2s1 APFS / 500GB Samsung SSD 850 EVO
disk0s2 Journaled HFS+ /Volumes/Macintosh HD 2 ST2000DM006-2DM164
I wondering if there is some other hardware limitation, like the SATA interface itself or a cable? Is there any further tweaking I can do to make this as fast as it should be? Please don't tell me that my mac is just too old!!
Thank you,
David.
