My iMac suffered a tough drive crash a pair years in the past and I used to be compelled to reformat the drive and reinstall from scratch. Efficiency has been horrible ever since. It would possibly be as a result of the SSD by no means obtained configured to be the cache for the onerous drive — i.e. there isn’t a longer a hybrid drive. (Or it could be as a result of I additionally upgraded the OS (at present working Monterey), or it could be bloatware. Or possibly once I upgraded the RAM to 16G just a few years in the past I put in the flawed stuff.)

Machine is a 2017 27-inch iMac.

So proper now I am attempting to slender down potentialities. This morning I deleted an entire bunch of software program I by no means use, together with Parallels VM. Now I am trying into the SSD challenge.

tl;dr: how can I affirm that my SSD is getting used along with my most important drive?

Edit: output of diskutil record:

/dev/disk0 (inner, bodily):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *28.0 GB    disk0
   1:                        EFI ⁨EFI⁩                     314.6 MB   disk0s1
   2:                 Apple_APFS ⁨⁩                        27.6 GB    disk0s2

/dev/disk1 (inner, bodily):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *1.0 TB     disk1
   1:                        EFI ⁨EFI⁩                     209.7 MB   disk1s1
   2:                 Apple_APFS ⁨Container disk2⁩         999.9 GB   disk1s2

/dev/disk2 (synthesized):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      APFS Container Scheme -                      +999.9 GB   disk2
                                 Bodily Retailer disk1s2
   1:                APFS Quantity ⁨Macintosh HD - Knowledge⁩     869.9 GB   disk2s1
   2:                APFS Quantity ⁨Preboot⁩                 308.5 MB   disk2s2
   3:                APFS Quantity ⁨Restoration⁩                1.1 GB     disk2s3
   4:                APFS Quantity ⁨VM⁩                      9.7 GB     disk2s4
   5:                APFS Quantity ⁨Macintosh HD⁩            15.4 GB    disk2s5
   6:              APFS Snapshot ⁨com.apple.os.update-...⁩ 15.4 GB    disk2s5s1

/dev/disk3 (exterior, bodily):
   #:                       TYPE NAME                    SIZE       IDENTIFIER
   0:      GUID_partition_scheme                        *5.0 TB     disk3
   1:                        EFI ⁨EFI⁩                     209.7 MB   disk3s1
   2:                  Apple_HFS ⁨Falk backups 3⁩          5.0 TB     disk3s2