Intel's Linux Software Optimizations Continue Paying Off Big Time For Xeon Emerald Rapids

[phoronix]

Phoronix: Intel's Linux Software Optimizations Continue Paying Off Big Time For Xeon Emerald Rapids

Intel 5th Gen Xeon Scalable processors already offer some nice generational improvements with improved AVX-512, faster DDR5 memory support, and also the new Optimized Power Mode option. But if wanting to maximize the performance capabilities even further, Intel's Clear Linux distribution continues working out well for maximizing the performance capabilities of Intel x86_64 hardware.

https://www.phoronix.com/review/intel-linux-emerald-rapids

[Zupo Llask]

The overall performance improvement is almost unbelievable... 😊

[varikonniemi]

very interesting that it can have 2x performance increase and 2x performance decrease depending on the benchmark...

[Namelesswonder]

Wow, those VVenC benchmarks are an absolute slaughter. Definitely some optimizations that Fraunhofer should look at finding a way to include.

[Volta]

Wow, those VVenC benchmarks are an absolute slaughter. Definitely some optimizations that Fraunhofer should look at finding a way to include.

Clear Linux is the only one that uses a performance governor. Others benefit from saving energy. This should give you a clue.

[Namelesswonder]

Clear Linux is the only one that uses a performance governor. Others benefit from saving energy. This should give you a clue.

That is not a clue. Performance versus ondemand or schedutil will not result in benchmark results that eclipse the others by 3x.

MIchael's already done tests comparing the governors, performance doesn't win by massive margins. It has better results, but it always carries higher power draw and temperatures.
Incidentally because this an Intel processor, it is instead using intel_pstate which will override the governor and instead offer only powersave or performance. Michael's also already done tests on this and has shown that the intel_pstate powersave governor only loses by about 9% while at the same lowering CPU temperature by 10 degrees on average and saving about 60-80W on average in his test too.

You better watch out for your copium tanks, breathing in any harder might cause them to implode.

[dimko]

What about Steam on Intel's Linux?
Do games get any benefits?

[ffs_]

What about Steam on Intel's Linux?
Do games get any benefits?

I'm not expert, but from what I saw in their kernel konfig & patches I'd say -- probably not. Would be interesting to see benchmarks though.

[Volta]

That is not a clue. Performance versus ondemand or schedutil will not result in benchmark results that eclipse the others by 3x.

MIchael's already done tests comparing the governors, performance doesn't win by massive margins. It has better results, but it always carries higher power draw and temperatures.
Incidentally because this an Intel processor, it is instead using intel_pstate which will override the governor and instead offer only powersave or performance. Michael's also already done tests on this and has shown that the intel_pstate powersave governor only loses by about 9% while at the same lowering CPU temperature by 10 degrees on average and saving about 60-80W on average in his test too.

You better watch out for your copium tanks, breathing in any harder might cause them to implode.

Different compiler flags and governor. What a mystery. Are you saying Clear Linux is useless with higher energy consumption or there's some hidden truth behind this wall of text?

FYI schedutil can cripple performance by 50% or more. Oh, what I'm saying.. it can be 5x times slower. Breath slowly.

https://www.phoronix.com/review/intel-12900k-pstate/2

[pWe00Iri3e7Z9lHOX2Qx]

very interesting that it can have 2x performance increase and 2x performance decrease depending on the benchmark...

Well, the 2x loss only happened in a single benchmark and it led by a fairly wide margin in almost every other benchmark.