What's the point of “Scaling Governors” with Intel pstate?
Clash Royale CLAN TAG#URR8PPP
up vote
0
down vote
favorite
Before Intel pstate, we had different scaling governors which used to change how the CPU frequency scales, but now, with pstate, we only have 2 "Governors": Powersave and Performance. We can also change the minimum and maximum frequencies of them both, enable/disable the turbo boost, etc.
However, looking at the behaviour on my PCs, it looks like the Powersave governor scales the frequency of the CPU (like the old ondemand), while the Performance one just pin it at maximum. So what's the point of having them? Why isn't there just one Standard Governor (the Powersave one), since if we want to pin the CPU at 100% we can just manually set the minimum frequency at 100%? Or am I missing something else?
Right now if I set the Performance governor with the maximum frequency at 100% or the Powersave one with the minimum at 100% I can't notice any difference.
(Furthermore, if I've understood correctly, we can't really change the frequency anymore, but only the P-state, but this doesn't affect the point of my question)
linux linux-kernel cpu intel cpu-frequency
asked Nov 21 at 21:55
Lolu
1
New contributor
Lolu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
up vote
0
down vote
favorite
Before Intel pstate, we had different scaling governors which used to change how the CPU frequency scales, but now, with pstate, we only have 2 "Governors": Powersave and Performance. We can also change the minimum and maximum frequencies of them both, enable/disable the turbo boost, etc.
However, looking at the behaviour on my PCs, it looks like the Powersave governor scales the frequency of the CPU (like the old ondemand), while the Performance one just pin it at maximum. So what's the point of having them? Why isn't there just one Standard Governor (the Powersave one), since if we want to pin the CPU at 100% we can just manually set the minimum frequency at 100%? Or am I missing something else?
Right now if I set the Performance governor with the maximum frequency at 100% or the Powersave one with the minimum at 100% I can't notice any difference.
(Furthermore, if I've understood correctly, we can't really change the frequency anymore, but only the P-state, but this doesn't affect the point of my question)
linux linux-kernel cpu intel cpu-frequency
asked Nov 21 at 21:55
Lolu
1
New contributor
Lolu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
up vote
0
down vote
favorite
up vote
0
down vote
favorite
Before Intel pstate, we had different scaling governors which used to change how the CPU frequency scales, but now, with pstate, we only have 2 "Governors": Powersave and Performance. We can also change the minimum and maximum frequencies of them both, enable/disable the turbo boost, etc.
However, looking at the behaviour on my PCs, it looks like the Powersave governor scales the frequency of the CPU (like the old ondemand), while the Performance one just pin it at maximum. So what's the point of having them? Why isn't there just one Standard Governor (the Powersave one), since if we want to pin the CPU at 100% we can just manually set the minimum frequency at 100%? Or am I missing something else?
Right now if I set the Performance governor with the maximum frequency at 100% or the Powersave one with the minimum at 100% I can't notice any difference.
(Furthermore, if I've understood correctly, we can't really change the frequency anymore, but only the P-state, but this doesn't affect the point of my question)
linux linux-kernel cpu intel cpu-frequency
asked Nov 21 at 21:55
Lolu
1
New contributor
Lolu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Before Intel pstate, we had different scaling governors which used to change how the CPU frequency scales, but now, with pstate, we only have 2 "Governors": Powersave and Performance. We can also change the minimum and maximum frequencies of them both, enable/disable the turbo boost, etc.
However, looking at the behaviour on my PCs, it looks like the Powersave governor scales the frequency of the CPU (like the old ondemand), while the Performance one just pin it at maximum. So what's the point of having them? Why isn't there just one Standard Governor (the Powersave one), since if we want to pin the CPU at 100% we can just manually set the minimum frequency at 100%? Or am I missing something else?
Right now if I set the Performance governor with the maximum frequency at 100% or the Powersave one with the minimum at 100% I can't notice any difference.
(Furthermore, if I've understood correctly, we can't really change the frequency anymore, but only the P-state, but this doesn't affect the point of my question)
linux linux-kernel cpu intel cpu-frequency
linux linux-kernel cpu intel cpu-frequency
asked Nov 21 at 21:55
Lolu
1
New contributor
Lolu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Nov 21 at 21:55
Lolu
1
New contributor
Lolu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Nov 21 at 21:55
Lolu
1
New contributor
Lolu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
asked Nov 21 at 21:55
Lolu
1
asked Nov 21 at 21:55
Lolu
1
1
New contributor
Lolu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
New contributor
Lolu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
Lolu is a new contributor to this site. Take care in asking for clarification, commenting, and answering.
Check out our Code of Conduct.
add a comment |
add a comment |
active
oldest
votes
active
oldest
votes
active
oldest
votes
active
oldest
votes
active
oldest
votes
Lolu is a new contributor. Be nice, and check out our Code of Conduct.
Lolu is a new contributor. Be nice, and check out our Code of Conduct.
Lolu is a new contributor. Be nice, and check out our Code of Conduct.
Lolu is a new contributor. Be nice, and check out our Code of Conduct.
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2funix.stackexchange.com%2fquestions%2f483313%2fwhats-the-point-of-scaling-governors-with-intel-pstate%23new-answer', 'question_page');
);
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Sign up or log in
StackExchange.ready(function ()
StackExchange.helpers.onClickDraftSave('#login-link');
);
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Sign up using Google
Sign up using Facebook
Sign up using Email and Password
Post as a guest
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
Required, but never shown
