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Same task runs in half time on M1 Pro compared to M1

VitoBotta

VitoBotta

macrumors 65816
Original poster
Dec 2, 2020
1,020
412
Espoo, Finland
I am kinda surprised by this. The same task, restoring a 50 GB Postgres dump in directory format, takes at least 1m40s on my M1 mini, but takes only 58 seconds or so on my colleague's M1 Pro. The restore uses as many threads as the number of available cores, so I would expect the M1 Pro to be a bit faster with this, but not 2x as fast? What else in the M1 Pro can explain the difference apart from the 2 additional cores?
 
VitoBotta said:
What else in the M1 Pro can explain the difference apart from the 2 additional cores?
Click to expand...
How much SSD space is on the M1 mini versus the M1 Pro? 256 Gig SSD is a single chip, 512 Gig and up are multiple chips. That will affect the bandwidth available to the SSD. The issue may be more of maximizing the path the to the SSD rather than the number of cores.
 
raythompsontn said:
How much SSD space is on the M1 mini versus the M1 Pro? 256 Gig SSD is a single chip, 512 Gig and up are multiple chips. That will affect the bandwidth available to the SSD. The issue may be more of maximizing the path the to the SSD rather than the number of cores.
Click to expand...

on my M1 mini it's 256, I don't know about my colleague
 
raythompsontn said:
How much SSD space is on the M1 mini versus the M1 Pro? 256 Gig SSD is a single chip, 512 Gig and up are multiple chips. That will affect the bandwidth available to the SSD. The issue may be more of maximizing the path the to the SSD rather than the number of cores.
Click to expand...
I don’t know if the SSD speed applies to the M1, because unless I missed some news, the slower SSD speed is only in the M2 base machines.
 
Seems to me you had posted a previous thread asking about m2 Mini vis-a-vis m2pro Mini.

Well... now you can see how it makes a difference "in the real world"...
 
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