Preview eats up CPU usage/sudden spikes

Hello I'm an owner of MBP 13" 2011 10.7.2
When running Preview to open large pdf files, one of the mdworker processes spikes up to huge CPU usage, as well as Preview process.
Thus, I'm having hard time reading pdf files. Is there something I can do to prevent this?
Thanks.

It looks like you have more than enough RAM, and your system should be able to handle most documents. But 384MB is quite large; in many cases, authors may choose to chapterize a large document in order to cut down on really large PDFs. For scale, a 900 page PDF book is often no bigger than 35MB.
In short, the graphics haven't been optimized, and you'll have difficulties opening a document like this on a desktop computer.
My suggestion: chapterize upcoming documents (if you can), or save as another type of document in Preview/PDF/Save to Postscript.

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Hi
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Maybe mobile or client fails to download will cause this problem.
What was the fix for this?

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Why do you need three different browsers running at the same time? Maybe that's causing a problem or what your are doing with them.
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Hello all.
I have a xserve running 10.5.6
2.8GHz quad
4GB ram
build 9g55
services
- afp
dns
ical
ichat
netboot
nfs
OD
smb
sw update
web
and ive notice that over the past week, as soon as a few clients connect to the server the CPU usage will spike really high and not return to normal idle.
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I can simply reset the server and values will return to normal but there has to be a reason..
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Really?! That's really encouraging, I wasn't aware that it would be so IO bound, since I'd seen it behave as described when working only across both internal drives - I might have expected it on external Firewires. Thank you so much for the information Patrick, I'll be looking into RAIDs in the new year.

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Is it normal for my CPU usage to spike to 100% everytime a page loads? I'm doing some minor load testing on the example StockPortal with 30 users, and my CPU usage keeps maxing out. Even when I'm the only one on it, the CPU usage spikes to 100%.
The machine I'm using is a 1.4 ghz Pentium with 1 gig of RAM. I also changed the cloudscape database to SQL Server 2000.
Am I suppose to do anything else? Please email me any answers.
Thanks,
Edward
[email protected]

Chris,
I asked around here yesterday. A couple of our performance test guys said
they had seen similar symptoms on some machines when:
(1) Pages may be getting compiled on every hit. As a result,
you will see CPU getting pegged.
They have to make sure the ServletReloadCheckSecs is not set to 0 (in
config.xml).
(2) They also have to set "pagecheckseconds" in weblogic.xml to non zero.
setting them to 300 secs may be appropriate....
Sincerely,
Daniel Selman
"Chris" <[email protected]> wrote in message
news:[email protected]...
>
Thanks for your replies.
This is WLS 6.1 sp1, WLP 4.0 sp1. we are testing against theout-of-the-box stockPortal
(Avitek). only change is that we are using a MSSQL database.
we are going to be running JProbe this morning to attempt to findbottlenecks
in the code.
"Daniel Selman" <[email protected]> wrote:
Chris,
Did you make any customizations or is this a plain download of WLP 7.0?
Any
help in reproducing this would be helpful.
Thanks,
Daniel Selman
"Chris" <[email protected]> wrote in message
news:[email protected]...
Unfortunately, we are seeing the same phenomenon on a DELL 6450,
2x700Mhz
PIIIX,
4G Ram.
The webserver CPUs peg at 92-98%, login response times are 17sec andpage
response
times are 10sec and this is a test with a blank portal page, ie norendered portlets
at all.
On the other hand, the DB servers (same config) are struggling to reach5%
CPU
utilization.
we've tweaked threads, socket readers, heap size, logging, cxn pools,and
everything
else we can think of.
anyone have any ideas?
"Daniel Selman" <[email protected]> wrote:
Edward,
A slightly facecious question: would you rather that the CPU was at
50%
utilization and the operation took twice as long?
100% CPU utilization is not necessarily a bad thing, it depends onhow
competing OS tasks are being scheduled by the OS and the overallperformance
of the system.
Sincerely,
Daniel Selman
"Edward" <[email protected]> wrote in message
news:[email protected]...
Is it normal for my CPU usage to spike to 100% everytime a page
loads?
I'm
doing some minor load testing on the example StockPortal with 30
users,
and
my CPU usage keeps maxing out. Even when I'm the only one on it, the
CPU
usage spikes to 100%.
The machine I'm using is a 1.4 ghz Pentium with 1 gig of RAM. I
also
changed the cloudscape database to SQL Server 2000.
Am I suppose to do anything else? Please email me any answers.
Thanks,
Edward
[email protected]

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Maybe someone in the Office 2004 for Mac Forums can help you.
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I've cleared cookies multiple times
I've emptied the cache
I cleared my download history, and a majority of my browsing history
I've tried having hardware acceleration for both flash and firefox on and off
I turned off all my apps and plugins and when that did nothing I turned back on the ones I need. I never had a lot of apps to begin with. only a max of 5. I had quite a few plugins, but i disabled all but quicktime, flash, and silverlight. I have those three set on "ask to activate" so none are "always active" anymore.
I also tried a couple things from the FAQ and forums here about changing a few settings in the "about:config" setup.
A few of the above things initially worked, but after a day or two it'd be back to sucking up my CPU and memory. I would then try the same thing again, and this second time there would be no improvement.
The real memory will fluctuate between 200 MB and 1.7 GB, and has done so for quite a while.
Even after I've left streaming sites, and sites with lots of images, and I'm not downloading anything, the memory and the CPU will still do that. I only have a handful of tabs open at a timeusually, and all of them are mostly text. I'll quit and reopen firefox, which will initially bring the memory and CPU usage down, but it inevitably climbs up quite quickly, regardless of my tab usage. It'll be the same if I'm playing a flash game or scrolling through blogs.
I never had any of these problems with Firefox 23, and my internet usage habits haven't changed at all. I had some of this slowness a few times with version 24, but nowhere near as bad as this, or as constant. Almost everyday I end up googling for other ways to speed things up. Everything I do never slowed down Firefox on earlier versions.
I've tried all my usual tasks on Safari which will never climb above 30-40 MB of memory, even on netflix streaming, or flash games, and the CPU will average around 8 and 11%.

i'm also having major CPU problems w/ FF 29.0.1. when i restart the app it calms down again but after loading tabs it steadily climbs up to 100% after not too long. i have checked out the 2 CPU links/articles above and do all the basic troubleshooting and tips, but with all the FF tools & add-ons isn't there some sort of CPU monitor that has the ability to display which extensions/scripts are hogging the CPU? Activity Monitor on Mac just shows the total used by the app. it's impossible in my case to efficiently disable dozens of add-ons & scripts, restart, and test each one by one b/c it can take several hrs before the CPU starts to spike high again. i have no time for this.
thanks

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Huh. A simple call to View.setMinimumFrameCycleTime() fixed the problem. How odd that there effectively is no default maximum framerate. Of course simple programs like these, rendered as many times as possible every second, are going to consume all possible CPU usage...

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Any assistance would be greatly appreciated.
Thanks!
--m
Powerbook G4 (17-inch) Mac OS X (10.3.5)

Firefox Consumes a lot of CPU Resources
https://support.mozilla.com/en-US/kb/Firefox%20consumes%20a%20lot%20of%20CPU%20resources
High Memory Usage
https://support.mozilla.com/en-US/kb/High%20memory%20usage
Check and tell if its working.

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Shay,
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