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Forum: General Discussion

Sujet: Latency vs. CPU usage

Ce topic est ancien et peut contenir des informations obselètes ou incorrectes.

Hey all,

With my Audio8 soundcard, i have some options in the asio driver, to change latency settings, about 5 or 6 presets. From high latency with low CPU usage, to low latency with high CPU usage.

Now i am wondering how to get the best latency settings out of VDJ, with the most stability.
I tried some settings, and at a decent setting, i have about 30% CPU usage, while playing 2 tracks together, with 2 timecode cd's running.
The next step with even lower latency, wil put my CPU usage around 50-60%, and when i push it even further, it'll be at 70-80% CPU usage while playing 2 tracks controlled by timecode.

When i load a track, the CPU does jump to 100% for a sec, but that is even at the highest latency setting, so normal behavior i guess.

Now my question is, will VDJ be playing rock solid stable, when i pick the setting with very low latency, and have 70-80% cpu usage all the time?
Or should i be safe, and take a setting with less CPU usage, but a bit more latency. (which for me, is noticeable, especially when cue'ing)

btw, i run VDJ on a dualcore centrino laptop, with 2Gb ram.
 

Posté Wed 20 Feb 08 @ 4:29 pm
You are the only one that can answer this question, it's your machine. You will have to run your own test, to see which works better for you. I don't care if my machine runs at high cpu, as long as it continues to play.
 

It depends what else is running on the machine, technically, 100% all day should be fine, but this is the real world and it's a bit like your sound system, or car. We need to leave some headroom for "peaks", and of course "overtaking". Or for other processes to catch up!

I always aim to leave 50% free on average, leaving a nice safe margin available. Had no problems so far.

Just remember to do your best to keep it cool.
 



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