10.9 and Handbrake (low CPU usage)

[CTYankee]

I noticed Handbrake was encoding at about 75% its usual rate. I checked Activity Monitor and saw that it is only using 60% CPU.

On 10.8 it would definitely run faster and hotter. The fan barely kicks on now. Rendering is at 60fps and not the 75+ for the AppleTV2 setting with 720P source material.

Anyone else seeing Handbrake run slower?
Any settings I'm missing that are make it run cooler/slower?

 

[Manic Harmonic]

I don't know if handbrake supports app nap yet, but have you checked get into to see if it supports it, and if so, if it's enabled? Just a bunch because it sounds vaguely similar to problems people have been having with FCP X.

 

[pastrychef]

Try this:

1. Right-click Handbrake in your Applications folder.
2. Select Get Info.
3. Put a check next to Prevent App Nap.

 

[nxent]

you got handbrake to work with 10.9? my copy crashes everytime i launch it.

 

[jostermacedo]

nxent,

here Handbrake works flawlessly in Mavericks. Which version are you using? I suggest you to download the latest nightly build at:

http://handbrake.fr/nightly.php

Joster

 

[CTYankee]

I restarted and it worked fine. However good tip on the ability to turn off App Nap, thanks!

 

[RedRaven571]

Yes, thanks Pastrychef; running much better with app nap disabled....

 

[CTYankee]

Strange…HB occassionly starts and runs around 40-60% of CPU. Other times t cranks right up to 98%. I can't see why or what is different, but it definitely does not go full speed all the time like it used to (even with App Nap turned off).

 

[Mr. Retrofire]

I noticed Handbrake was encoding at about 75% its usual rate.

The reason is probably the new timer coalescing. Threads sleep and wake up, as necessary. OS X uses high precision timers for the thread (pthreads, GCD and so on) management, AFAIK.

 

[nxent]

nxent,

here Handbrake works flawlessly in Mavericks. Which version are you using? I suggest you to download the latest nightly build at:

http://handbrake.fr/nightly.php

Joster

Yep, I got it working. It had to do with the hardware I was running 10.9 on-