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Old 30 January 2014, 22:25   #1
Leandro Jardim
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64 MHz Cycle Exact modes

When A/NES is reading a directory full of NES Roms and CE mode is enabled with a big MHz speed, the filesystem (PFS-AIO) occupies so much CPU time that it slowdown the whole emulation. Any other tasks, like Super Mario Bros. 3 (A/NES) behave normally and are fast, but while the filesystem is reading/writting, the speed is a big issue.

(WinUAE 2.7.0 and 2.7.1, alpha and beta.)

Last edited by Leandro Jardim; 31 January 2014 at 07:46.
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Old 31 January 2014, 08:08   #2
Toni Wilen
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Because lack of information: you are doing something wrong. How did you conclude it is filesystem? Why do you think it is a problem? What? Why?
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Old 31 January 2014, 09:24   #3
Leandro Jardim
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Quote:
Originally Posted by Toni Wilen View Post
Because lack of information: you are doing something wrong.
Well, its possible.

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Originally Posted by Toni Wilen View Post
How did you conclude it is filesystem?
The computer can run that game on A/NES and the FPS/CPU speed counter gets at 50/80, respectively. It runs as fast as it can be for a 64 MHZ machine, of course, but it runs fast. BUT, with A/NES or any other program acessing the HDF on the Workbench screen, the emulation gets "glacial" really, too bad to be only my computer that is slow, since it ran SMB3 and other games without problems.

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Why do you think it is a problem?
Because it happens only when there is HDF access.

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What? Why?
Well, I dont know, you are the programmer, but I think this could be a problem because I think that HDF access wouldnt need to be so CPU intensive without something wrong. Can it be?

Hmm, no?
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Old 31 January 2014, 09:26   #4
Toni Wilen
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I think you missed the hint. no config, no logs, no specs whatsoever = "not enough information".
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Old 31 January 2014, 09:59   #5
Leandro Jardim
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Sorry Toni, I thought you was speaking serious!
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Old 31 January 2014, 12:39   #6
Toni Wilen
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You also forgot that _always_ test with basic setup first (no fullscreen, especially no VSYNC!). I am quite sure there is nothing wrong, you are just trying to do something that can't work. (Vsync mode + cycle-exact CPU speed that uses too much host CPU time + host side file operations).

Copy all data to RAM disk if you really want to use this kind of config.
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