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A comment on Apple announces it will switch to its own processors for future Macs. Parent comment

Re:Apple announces it will switch to its own processors for ... by ardy42 on Monday June 22, 2020 @05:31PM (#23606991)
>>> They already have a mobile chip that is as fast as an active-thermally cooled notebook chip.

>> "As fast" on specific curated use cases. Show me an Apple chip that beats any laptop on 7zip.

> Is this a joke, what kind of usage benchmark is 7zipping large numbers of files?

A benchmark that Apple is unlikely to have implemented specific optimizations for, which therefore is a better test of the general purpose performance of the chip.

The situation being claimed here is sort of like if someone cited a DES benchmark to claim that Deep Crack's DES cracking chips (https://en.wikipedia.org/wiki/EFF_DES_cracker) were faster than a contemporary 1998 Pentium II.

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Re:Apple announces it will switch to its own processors for ... by r00fus on Monday June 22, 2020 @05:35PM (#23607033)
A benchmark that probably relies as much on disk access speeds as CPU?
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Re:Apple announces it will switch to its own processors for ... by user5994461 on Monday June 22, 2020 @05:49PM (#23607229)
Nope, 7zip is using LZMA algorithm for compression, which is around a few MB/s on the fastest CPU. It's heavily CPU bound.

edit: Just tried compressing a large file, ultra setting on my desktop i5 CPU, it's running at 3 MB/s on 1 core.

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Re:Apple announces it will switch to its own processors for ... by dwaite on Tuesday June 23, 2020 @02:09AM (#23610423)
Apple ships a framework for doing lzma and other compression algorithms. I doubt they will be taken by surprise
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Re:Apple announces it will switch to its own processors for ... by r00fus on Monday June 22, 2020 @07:08PM (#23608001)
One large file could be CPU bound, many small files (which is partly why you zip/jar things up) is disk bound.
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Re:Apple announces it will switch to its own processors for ... by stjohnswarts on Monday June 22, 2020 @05:59PM (#23607354)
Not true. the bottleneck is going to be compression not disk access.
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Re:Apple announces it will switch to its own processors for ... by ardy42 on Monday June 22, 2020 @05:44PM (#23607164)
> A benchmark that probably relies as much on disk access speeds as CPU?

If true, that's just a nitpick that doesn't affect the overall point of the GGGP, though.

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