lag spikes

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saiko-chriskun
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lag spikes

Post by saiko-chriskun »

has anyone else experienced any lag spikes? about every second the time of one frame will jump slightly.. it's not that big a deal but it looks bad and was just wondering =/
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ghostwriter
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Re: lag spikes

Post by ghostwriter »

Are you accessing the hard drive at any point in your main loop? If you load a new image or sound you may experience a slight delay.
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saiko-chriskun
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Re: lag spikes

Post by saiko-chriskun »

no, it even happens when I load the FPS demo, which only prints the current value for dt.
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ghostwriter
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Re: lag spikes

Post by ghostwriter »

Hmm... you might have other applications running that are slowing things down. Do you notice this lag in other 3d applications? I had the same thing happen to me a couple years ago, it turned out to be due to the bandwidth monitor I had running in the background, because it was continuously updating its log files. I've noticed that some IRC clients can do this as well.
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adrix89
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Re: lag spikes

Post by adrix89 »

Its a vsync problem
A way to fix this is to either set it to fullscreen(witch means you have to do some hacking for most games) or set vsync to false(which I don't recommend,besides most don't use dt)
Old thread:
http://love2d.org/forums/viewtopic.php?f=4&t=2003
I use Workflowy but you can check out Dynalist as its the better offer.
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TechnoCat
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Re: lag spikes

Post by TechnoCat »

adrix89 wrote:most don't use dt
This isn't true.
My graphics drivers force v-sync off and I don't have a problem with most games.
thitem
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Re: lag spikes

Post by thitem »

Try set high priority for game application through the task manager.
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Xkeeper
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Re: lag spikes

Post by Xkeeper »

thitem wrote:Try set high priority for game application through the task manager.
This is not only a really really bad idea, but it won't fix it, either.

It's a vsync issue. Just disable vsync and apply some common sense dt checks and you're good.
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bartbes
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Re: lag spikes

Post by bartbes »

How would vsync cause this?
thitem
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Re: lag spikes

Post by thitem »

I have this problem too. And high priority fix it.
Maybe lag spikes have a another reason.
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