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Dolphin, the GameCube and Wii emulator - Forums › Dolphin Emulator Discussion and Support › General Discussion v
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Lock threads to cores??
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Lock threads to cores??
12-27-2012, 11:47 AM
#1
Wiigeek336 Offline
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Ok, so I've been interested in Dolphin lately. I have been heavily tweaking the settings so my PC can run at playable speeds. I am well-known of all/most settings, but "Lock Threads to Cores" really stumped me. I looked it up on the Dolphin performance guide and it apparently helps hyperthreading processors, and my processor(pentium 4) just happens to have HTT(hyperthreading technology). I compared FPS before and after. I got no decrease or increase. Can someone fill me in on why this is here and what it does? Undecided
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12-27-2012, 11:49 AM
#2
RachelB Offline
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It rarely ever does anything at all, and can sometimes even lower performance. There are plans to remove the option, but in the mean time, just leave it off.
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12-27-2012, 12:49 PM
#3
ExtremeDude2 Online
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I've found some games crash/won't boot with it, but they say it helps DKCR's random crashing :3
Check out my videos (dead)
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12-27-2012, 08:27 PM (This post was last modified: 12-27-2012, 08:27 PM by DefenderX.)
#4
DefenderX Away
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It really helps with DKCR Wink With Lock Threads to Cores enabled, I never get any crashes (Well, didn't test it on Dolphin 3.5 yet)
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12-28-2012, 07:58 PM
#5
m0no
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(12-27-2012, 08:27 PM)DefenderX Wrote: It really helps with DKCR Wink With Lock Threads to Cores enabled, I never get any crashes (Well, didn't test it on Dolphin 3.5 yet)
Working great!!
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12-30-2012, 08:08 AM (This post was last modified: 12-30-2012, 08:09 AM by NaturalViolence.)
#6
NaturalViolence Offline
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@Wiigeek336

In your case it won't make a difference. With a pentium 4 you shouldn't even be enabling dual core mode.

With the option turned off the OS is given control of thread affinity. This results in the threads "jumping around" from core to core.

With the option turned on the thread affinity is "locked" to a specific core. This means that the threads each remain on a specific core.

It's useful for taking measurements and might boost performance in some scenarios such as mobile cpus with turbo boost.

By default it's set to off and for most situations it should be left off.

In cpus with 1 or 2 logical cores (such as yours for example) there is basically no difference between having the option on/off.
"Normally if given a choice between doing something and nothing, I’d choose to do nothing. But I would do something if it helps someone else do nothing. I’d work all night if it meant nothing got done."  
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05-12-2013, 12:05 AM
#7
Wiigeek336 Offline
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(12-30-2012, 08:08 AM)NaturalViolence Wrote: @Wiigeek336

In your case it won't make a difference. With a pentium 4 you shouldn't even be enabling dual core mode.

With the option turned off the OS is given control of thread affinity. This results in the threads "jumping around" from core to core.

With the option turned on the thread affinity is "locked" to a specific core. This means that the threads each remain on a specific core.

It's useful for taking measurements and might boost performance in some scenarios such as mobile cpus with turbo boost.

By default it's set to off and for most situations it should be left off.

In cpus with 1 or 2 logical cores (such as yours for example) there is basically no difference between having the option on/off.
Dual Core mode gives me a huge speed boost (almost 2X single core speed). But yeah, thanks for the info.
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05-13-2013, 02:39 AM
#8
NaturalViolence Offline
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Are you sure that you have a pentium 4?

Also why did it take you 5 months to respond to my post?
"Normally if given a choice between doing something and nothing, I’d choose to do nothing. But I would do something if it helps someone else do nothing. I’d work all night if it meant nothing got done."  
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-Mark Antony
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05-14-2013, 04:36 AM
#9
drhycodan Offline
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What if you have a core i7 with hyper threading? Wouldn't having this option help?
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05-14-2013, 06:17 AM
#10
NaturalViolence Offline
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Nope.
"Normally if given a choice between doing something and nothing, I’d choose to do nothing. But I would do something if it helps someone else do nothing. I’d work all night if it meant nothing got done."  
-Ron Swanson

"I shall be a good politician, even if it kills me. Or if it kills anyone else for that matter. "
-Mark Antony
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