MacBook cpu running +100%

ibidiem

macrumors member
Original poster
Aug 27, 2005
70
0
Portland, OR
Whilst encoding mpeg to dvd format with ffmpegx, I checked out Activity monitor and it states that ffmpegx is using 104 to 106 percent of the cpu.

Does having dual processors (macbook 2.0) give me %200 percent operating power, by activity monitor's reckoning?

thought this was rather anomalous.

check it:



also of note: how little RAM ffmpeg is using.
 

damiandixon

macrumors newbie
Jul 30, 2006
5
0
Geelong, Australia
It's a weird quirk with OSX. The process list displays a percentage with 100% per CPU, but the CPU tab at the bottom of the Activity Monitor shows a percentage out of 100.



As you can see, our Dual 1.8 G5 runs > 100% for weeks at a time! :D
 

bep207

macrumors 6502
Jul 20, 2006
259
0
damiandixon said:
It's a weird quirk with OSX. The process list displays a percentage with 100% per CPU, but the CPU tab at the bottom of the Activity Monitor shows a percentage out of 100.



As you can see, our Dual 1.8 G5 runs > 100% for weeks at a time! :D
can someone explain what each column means in the activity monitor (# of threads , etc...)
 

Mackilroy

macrumors 68040
Jun 29, 2006
3,615
58
To answer the OP's question…

Each core can go up to 100 percent usage, which translates to 200 percent usage with two cores. So essentially you're using all of one core and the other core is pretty much free to do something else.
 

spencecb

macrumors 6502a
Nov 20, 2003
964
18
Mackilroy said:
To answer the OP's question…

Each core can go up to 100 percent usage, which translates to 200 percent usage with two cores. So essentially you're using all of one core and the other core is pretty much free to do something else.
I might get a little too excited when I see a Quad G5 or MacPro running at around 375% power....wow.
 

CyberPrey

macrumors regular
Aug 10, 2006
209
0
IGH, MN
sooner or later your machine is going to have a scottish voice blurb out the speakers "I canna go any faster, we're givin it all we got!!!"