DOSBox won't run more than 50% CPU \ VOGONS

DOSBox won't run more than 50% CPU

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First post, by Spuz

Posted on 2006-10-09, 16:00

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Greets. As the title suggests, I can't get my DOSBox to run more than 50% CPU (as shown in my task manager). I have edited the config file for DOSBox and increased the CPU Priority, but it always gets limited to 50% CPU.

I'm running Windows XP Home Edition. Does anyone know how to allow DOSBox to run more than 50% CPU?

Reply 1 of 7, by wd

Posted on 2006-10-09, 16:07

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I guess you have hyperthreading or something similar enabled?
It's no problem then, as dosbox uses only one of those HT-cpus,
but this one at 100% but if you divide it by 2 it'll show up as 50%.

Reply 2 of 7, by Spuz

Posted on 2006-10-09, 16:10

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I see. Is there any way to get it to use both threads, or am I SOL for now?

Reply 3 of 7, by DosFreak

Posted on 2006-10-09, 16:11

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DosBox is designed to only use one processor. So yeah, your SOL for now and for quite some time...probably forever. DosBox doesn't really have a need for multiple processors.

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Reply 4 of 7, by Spuz

Posted on 2006-10-09, 16:18

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I got it. Just had to disable my hyperthreading. Thanks, wouldn't have known what the issue was otherwise.

Reply 5 of 7, by wd

Posted on 2006-10-09, 16:30

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Well you can safely re-enable hyperthreading, this is just an oddity in how
the XP task manager displays the processor exhaustion, they do not
take into account the load-balancing "technique" of HT processors.

Reply 6 of 7, by DosFreak

Posted on 2006-10-09, 16:30

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No reason to disable hyperthreading. The Windows CPU diagram is just not very intuitive when showing processor usage with more than one processor.

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Reply 7 of 7, by wd

Posted on 2006-10-09, 16:31

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/me faster 😉 (this time...)

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