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PostPosted: Fri Apr 07, 2017 8:33 pm 
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Joined: Wed Jun 22, 2011 11:51 am
Posts: 52
Location: France
To compare BII speed on 2012 MBA .and. 2015 MBA (both Sierra, both the same BIIGUI), I ran a tiny .prg file sorting a 20,000 items .dbf file and writing the result in a 1,600 lines .txt file. The test is completed within 6 mn by 2012 MBA, and within 11 mn by 2015 MBA. Should I throw away the last MBA or what ? (I note that BII count from 1 to 10,000 at the same speed on both macs).


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PostPosted: Fri Apr 07, 2017 10:29 pm 
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Joined: Wed Nov 11, 2009 5:47 pm
Posts: 1038
Location: Germany
Thats stunning.
Can you rule out a Sierra issue by running your setup from a external drive under Yosemite?
Other than that, I guess newer is not always better. ;)
Ivy Bridge may have had other optimisation goals than Broadwell U when it comes to vintage software like BII.


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PostPosted: Fri Apr 07, 2017 11:22 pm 
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Joined: Fri Nov 27, 2009 5:11 am
Posts: 1838
It's the same issue I complained about back in 2015. Performance takes a nosedive in BII on Retina Macs unless you have the screen geometry set correctly. It seems to have optimizations for standard sizes, and allocates memory correctly then. Otherwise, there's a lot of swapping going on, slowing down not just screen display, but ALL emulation.


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