[amo] 8b03: Hidden CPU load?

musick · Post by **musick** » Sat Jan 24, 2009 11:15 pm

I noticed the fan of my MacBook starts blowing when Live 8 is just standing with an almost empty session and that the Mac GUI gets slow (e.g. on Dock pop-up), but the Activity Monitor doesn't show any load (90% idle). Strange......

flogistox · Post by **flogistox** » Sun Jan 25, 2009 12:01 pm

it happens the same to me on my macbook 2.2 with leopard 10.5.6..

musick · Post by **musick** » Sun Jan 25, 2009 1:20 pm

I'm still on 10.4.11 ..

Amaury · Post by **Amaury** » Wed Jan 28, 2009 6:01 pm

Hi,

Does the same happen with Live 7 for you?

Regards,
Amaury

musick · Post by **musick** » Wed Jan 28, 2009 6:16 pm

No, I only hear the fan starting when running Live 7 when I tax the cpu (when the load % in the right upper corner of the screen gets higher) or when e.g. bouncing to disk.

For example: I loaded a session with 3 Operators that stands still (load 2%) and after
a while the blower starts...

Odd is that the Activity Monitor shows 30% usage but Live shows only 10%. Could it be there are a lot of context switches that cause cpu load but are not accounted for? Quiting Live brings back the load to 4% (in top) and fan stops again.

Processes: 59 total, 3 running, 56 sleeping... 218 threads 19:13:29
Load Avg: 0.85, 0.54, 0.34 CPU usage: 33.9% user, 11.5% sys, 54.6% idle
SharedLibs: num = 68, resident = 18.4M code, 1.94M data, 5.07M LinkEdit
MemRegions: num = 6096, resident = 258M + 46.1M private, 198M shared
PhysMem: 245M wired, 238M active, 602M inactive, 1.06G used, 962M free
VM: 7.95G + 35.3M 34463(1) pageins, 0(0) pageouts

PID COMMAND %CPU TIME #TH #PRTS #MREGS RPRVT RSHRD RSIZE VSIZE
307 pmTool 2.4% 0:00.84 1 22 29 472K 3.49M 1.77M 38.6M
306 Activity M 2.0% 0:01.55 2 71 134 4.52M 20.6M 11.9M 371M
305 top 8.0% 0:07.46 1 20 20 800K 384K 1.21M 27.0M
301 MIDIServer 0.0% 0:00.24 5 97 65 524K 1.34M 1.58M 30.4M
300 Live 10.5% 0:58.45 10 324 438 157M 73.4M 205M 614M

flogistox · Post by **flogistox** » Mon Feb 09, 2009 8:59 pm

Im still having the same issue on beta version n 8:

compared to Live 7, on my macbook with OS 10.5.6, live beta seems to drain quite the same amount of cpu, while looking at istat pro the system indicates the computer is somehow working much harder and the temperatures get higher

flog

musick · Post by **musick** » Tue Feb 10, 2009 6:55 pm

Maybe it's caused by the debug stuff that runs extra in the beta's...

chevthewizard · Post by **chevthewizard** » Tue Mar 10, 2009 2:25 pm

I also am experiencing this on b16 OSX 10.4.11, 2GHz Macbook. (No problem with Live 7).

Live 8 runs perfectly fine though, nice and smooth, so I guess it probably is the beta debug stuff running.

Amaury · Post by **Amaury** » Fri Apr 03, 2009 3:35 pm

Hi,

How is it with 8.0.1, for those of you who installed it?

Regards,
Amaury

musick · Post by **musick** » Fri Apr 03, 2009 7:49 pm

Feels better so far, just installed 8.01. Will post here if it feels slower as 'normal'.

purplenoise · Post by **purplenoise** » Fri Apr 10, 2009 12:02 pm

Last night I saw something on my PC (Windows XP) that may be related...

On several occasions I saw that audio output became slow and broken (as if every other buffer of output was silent or a repeat of the previous buffer).

It reminded me of the time when I worked as developer for cakewalk's project 5 the same was reported because of the way I was handling CPU load above a preset maximum (by issuing Sleep(0) to prevent the GUI from becoming unresponsive)

The problem was that I see this behavior in live 8.0.1 when CPU load is not that high....reaching about 50% on each of my 2 cores, and only a handful of plugins that I know should not be very CPU demanding. CPU load reported on the live meter is about 50% as well. Live 7 handles this session without any problem.

Another issue I observed was that if I switch the "audio buffer size" setting the audio engine in live would lock up (maybe a deadlock?) and I could still close the preferences window but live needed to be killed and restarted for audio to work again.

I do not remember having this issue with my Echo Indigo sound card, so it *may* be somehow related to the buffer sizes required by my novation X station keyboard with built in audio IO. This keyboard and audio IO works fine in live 7. I can put a bit more time to get a more detailed report if this is helpful.

Thanks and congrats on a brilliant product overall!

-Aurelio Ramos

nq · Post by nq » Sun Apr 12, 2009 11:01 am

same here. Fans run at maximum speed with only 14 % CPU load

Live 8.01 Macbook pro, 2.16 GHz, 3 GB RAM, OS X 10.5.6

This is completely different from the behavior Live 7 shows

Amaury · Post by **Amaury** » Tue Jul 14, 2009 3:06 pm

Hi guys,

I moved this very old thread. If you have more comments/experiences using the latest OSX/Live combination, please contact support.

Regards,
Amaury

[amo] 8b03: Hidden CPU load?

[amo] 8b03: Hidden CPU load?

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