Originally posted by Ericg
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Linux's "Ondemand" Governor Is No Longer Fit
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Just updated to kernel 3.9 on my Ivy Bridge laptop to see if it makes a difference. It's hard to say non-subjectively without being lazy and doing some real objective testing, which I didn't, but it seems to have made a difference in both battery life, cpu temperatures, and hence fan noise when doing various tasks.
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Originally posted by molecule-eye View PostJust updated to kernel 3.9 on my Ivy Bridge laptop to see if it makes a difference. It's hard to say non-subjectively without being lazy and doing some real objective testing, which I didn't, but it seems to have made a difference in both battery life, cpu temperatures, and hence fan noise when doing various tasks.
I thought that Ivy Bridge is not yet supported?
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Originally posted by user82 View PostWhat does /sys/devices/system/cpu/cpu0/cpufreq/scaling_governor say for you?
I thought that Ivy Bridge is not yet supported?
My mobile ivy bridge:
Code:$ cpupower frequency-info analyzing CPU 0: driver: intel_pstate CPUs which run at the same hardware frequency: 0 CPUs which need to have their frequency coordinated by software: 0 maximum transition latency: 0.97 ms. hardware limits: 1.20 GHz - 3.20 GHz available cpufreq governors: performance, powersave current policy: frequency should be within 1.20 GHz and 3.20 GHz. The governor "performance" may decide which speed to use within this range. boost state support: Supported: yes Active: yes 25500 MHz max turbo 4 active cores 25500 MHz max turbo 3 active cores 25500 MHz max turbo 2 active cores 25500 MHz max turbo 1 active cores
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Originally posted by Ericg View PostNo, OnDemand is still fine for AMD because its AMD. But this is about creating a driver that ACTUALLY does a good job (not a half--assed) job of managing the CPU in terms of power management / performance. Once AMD writes a new scaling driver, like Intel did for intel_pstate, you should switch to that.
TL;DR: OnDemand is a half assed solution, new pstate drivers are the right solution. Intel only so far. AMD has to write their own.
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Originally posted by deanjo View PostDo you think that they will actually submit such code with them shutting down their OSRC and laying off their developers responsible for their cpufrq/PowerNow developers?
http://www.phoronix.com/scan.php?pag...tem&px=MTIyMDQAll opinions are my own not those of my employer if you know who they are.
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Originally posted by Ericg View PostI don't THINK AMD is gonna be in business within the next 5 years. And while I realize that does not exactly answer your question, in a way it does.
Not to mention AMD has some presence in the dedicated GPU market. Although the alleged performance of Haswell's onboard graphics core are destroying that presence...
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Originally posted by Sonadow View PostNot possible. Even though AMD hardware is really unspectacular they beat Intel hands down in the performance-cost ratio. Intel can play the price game, but if they drop their prices to the level of AMD's there will most certainly be some silly lawsuit being filed on the grounds of the most heavily abused word in the industry: anti-competition. (or dumping, whatever).
Not to mention AMD has some presence in the dedicated GPU market. Although the alleged performance of Haswell's onboard graphics core are destroying that presence...
Quite honestly, at least for me, I wont even CONSIDER an AMD APU for a Laptop just because of the heat and power consumption. Desktop, okay, maybe they have a shot in one of my builds just because power consumption doesnt matter as much there.All opinions are my own not those of my employer if you know who they are.
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