Building The Linux Kernel In 60 Seconds

Re:Building The Linux Kernel In 60 Seconds by piinbinary on Sunday December 11, 2011 @11:21AM (#3340294)

A desktop CPU probably has about an order of magnitude more power per cycle than a mobile chip.

They have bigger caches (less time spent waiting for memory), more logic units, deeper pipelines, and can handle far more 'in-flight' instructions.

That said, the smart phones of today probably do have more power than desktop computers of about 10 years ago.

edit: now that I think about it, a order of magnitude is probably generous, but I would still guess that it's at least a factor > 2.

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Re:Building The Linux Kernel In 60 Seconds by ypcx on Sunday December 11, 2011 @11:59AM (#3340389)

I don't have time to get better data, i.e. I couldn't find any MFLOPS data for a mobile CPU (not GPU), so just quickly unscientifically:

Texas Instruments OMAP4460 (in Galaxy Nexus at 1,2 GHz): 2047.7 BogoMIPS

1.7 GHz Xeon from 2006 (the small EC2 instance, single-core): 5203.55 BogoMIPS

Would be interesting to see some real benchmarks though..

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Re:Building The Linux Kernel In 60 Seconds by justincormack on Sunday December 11, 2011 @02:51PM (#3340866)

You dont want flops figures - no floating point is used to compile.

Bogomips lives up to its name.

I suspect that compiling has fairly poor locality and is quite cache dependent, so you might be better off just benchmarking on a mobile cpu.

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Re:Building The Linux Kernel In 60 Seconds by xal on Sunday December 11, 2011 @06:09PM (#3341446)

Not a great test either but better then the above:

  Geekbench 2 on iPhone 4S: 617
  Geekbench 2 32bit on iMac i7 @ 2.80GHz: 8557

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