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Re: FPS Drop/Game Stutter at beginning of new levels [message #488670 is a reply to message #488294]

Wed, 16 July 2014 18:32

StealthEye
Messages: 2518
Registered: May 2006
Location: The Netherlands

Karma:

General (2 Stars)

Bad file writing can be incredibly slow if it uses unbuffered synchronous I/O and does not chunk the data right. I used applications before that took seconds to write only a few 100 lines to a log file (without any processing other than the formatting). Of course, this could be implemented much more efficiently, but that probably goes for whatever is causing the stutters too. Wink

Stutters are at several 10ms resolution, bad disk access patterns may not be too far from that. I'm just saying it shouldn't be excluded completely, I'm not saying it is most likely the cause.

I think 3.4 writes the same log file. And if you say it happens more when the install dir is on the HDD and the log file is still on the SSD, then I guess it's not that.

Procmon sounds like a good idea.

I do wonder though, does it display ShatterPlanes1 every time? That's from ShatterSystem afaik, and afaik that's only used for window shattering; which I would not expect to be something that happens all the time?

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[Message index]

		FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Wed, 02 July 2014 22:35
		Re: FPS Drop/Game Stutter at beginning of new levels By: danpaul88 on Thu, 03 July 2014 01:56
		Re: FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Thu, 03 July 2014 05:46
		Re: FPS Drop/Game Stutter at beginning of new levels By: danpaul88 on Thu, 03 July 2014 07:49
		Re: FPS Drop/Game Stutter at beginning of new levels By: Ethenal on Thu, 03 July 2014 07:53
		Re: FPS Drop/Game Stutter at beginning of new levels By: iRANian on Thu, 03 July 2014 07:56
		Re: FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Thu, 03 July 2014 09:14
		Re: FPS Drop/Game Stutter at beginning of new levels By: StealthEye on Thu, 03 July 2014 13:58
		Re: FPS Drop/Game Stutter at beginning of new levels By: saberhawk on Fri, 04 July 2014 02:19
		Re: FPS Drop/Game Stutter at beginning of new levels By: Jerad2142 on Fri, 04 July 2014 12:11
		Re: FPS Drop/Game Stutter at beginning of new levels By: danpaul88 on Fri, 04 July 2014 13:10
		Re: FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Fri, 04 July 2014 13:06
		Re: FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Sat, 05 July 2014 21:06
		Re: FPS Drop/Game Stutter at beginning of new levels By: saberhawk on Sat, 05 July 2014 21:51
		Re: FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Sat, 05 July 2014 21:59
		Re: FPS Drop/Game Stutter at beginning of new levels By: Ethenal on Sat, 05 July 2014 22:42
		Re: FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Sat, 05 July 2014 22:54
		Re: FPS Drop/Game Stutter at beginning of new levels By: EvilWhiteDragon on Sun, 06 July 2014 06:32
		Re: FPS Drop/Game Stutter at beginning of new levels By: StealthEye on Sun, 06 July 2014 07:11
		Re: FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Sun, 06 July 2014 10:54
		Re: FPS Drop/Game Stutter at beginning of new levels By: StealthEye on Sun, 06 July 2014 12:31
		Re: FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Sun, 06 July 2014 16:23
		Re: FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Tue, 15 July 2014 17:50
		Re: FPS Drop/Game Stutter at beginning of new levels By: Ethenal on Wed, 16 July 2014 05:05
		Re: FPS Drop/Game Stutter at beginning of new levels By: StealthEye on Wed, 16 July 2014 12:29
		Re: FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Wed, 16 July 2014 17:47
		Re: FPS Drop/Game Stutter at beginning of new levels By: StealthEye on Wed, 16 July 2014 18:32
		Re: FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Wed, 16 July 2014 19:03
		Re: FPS Drop/Game Stutter at beginning of new levels By: danpaul88 on Thu, 17 July 2014 01:23
		Re: FPS Drop/Game Stutter at beginning of new levels By: XPiRX on Fri, 25 July 2014 15:50
		Re: FPS Drop/Game Stutter at beginning of new levels By: StealthEye on Wed, 06 August 2014 06:12

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