Operatingware

Opera High CPU Usage Fix

By Aenn Seidhe PriestS-Priest. Saturday, May 12, 2007 9:54:26 AM

Opera 9.x tend to hog the CPU and memory at times; the cause for this is the "automatic memory cache size" ≤etting. When trimmed to 20 megabytes or so (or any other fixed setting) the CPU/memory hogging problem is fixed.

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Comments

Cosmincozappz # Tuesday, August 21, 2007 5:09:12 PM

This will just shorten the time Opera behaves this way.
It climbs up to 270MB and CPU at 60% on HyperThreadng CPU when having the setting to 60MB cache size over 2-3 minutes till it settles to 45-50MB and low CPU usage.

Aenn Seidhe PriestS-Priest # Tuesday, August 21, 2007 5:16:08 PM

What's the OS? And what's the CPU?

Here it tends to behave (K7@2000 MHz/Windows 2000 SP4).

Cosmincozappz # Friday, August 31, 2007 2:45:38 PM

Sorry it took so long:
Windows XP SP2 all updates.
CPU: P4P-T/J (Prescott) Pentium 4E 3GHz

Aenn Seidhe PriestS-Priest # Friday, August 31, 2007 3:15:52 PM

Ah yes. P4 with its minuscule L1 cache. It just overflows.

Try setting memory cache to 20 MBs, disk cache to something like 20-40 (or off altogether - see if it helps; the issue can be Windows' file cache getting bloated, too).

Cosmincozappz # Friday, September 7, 2007 1:31:20 PM

The problem was related to the update of Opera from version 9 through versions of DesktopTeam (betas) to latest version.
Anyway, Opera installed on fresh Windows XP install still crawls onto sites using Flash.

noder # Wednesday, November 28, 2007 3:44:11 PM

hi, i have a nasty 100% cpu usage by opera when i have opened 40 tabs with websites .. most of them are pure text with static images the suggestion with disk cache or memory cache setting didn't help..

my config is : core2duo t7700 (2x2.4ghz) 4 gig of ram with vista x64 business and ofcoz the opera 9.24

Aenn Seidhe PriestS-Priest # Friday, November 30, 2007 10:40:39 AM

1. Try turning the tab bar, and other unnecessary extras, like the "Quick Dial" off... The "Window" menu and [1]/[2] buttons can switch between pages.
2. Check how much RAM Opera eats with all the pages open, then switch the memory/disk cache to a size that matches Opera's memory usage.

It could be something related to Vista specifics though, like its built-in DRM (at kernel level), cosmetics, or such...

Aenn Seidhe PriestS-Priest # Saturday, December 1, 2007 12:26:48 AM

Opera will still generate thumbnails for each open page; it's that which will shoot CPU usage up, as it has to page through all the thumbnails in RAM. There should be a switch for that somewhere in Opera's .ini files, though turning the tab bar off should help too.

maluminse # Sunday, June 27, 2010 2:14:24 PM

2010 10.54

Processor hanging at 50 percent when only google is open. Totally dragging my browsing. Used to lickety split. My cache was already set at 20 mb for disk I just changed my memory cache to 40. Still 50 percent idle web page no video. I reinstalled Opera 10.54 also. No go.

xp pro 2 1ghz processors 3.4 gb ram.

maluminse # Monday, June 28, 2010 2:58:27 AM

I just figured it out. On my speed dial each web page link was auto reloading like every 4 seconds so like 6 tiny web pages on my speed dial were reloading.... So I turned em all off. processor dropped to 0. its about 0 now. Suuuweeeet.

magarocule # Thursday, September 9, 2010 6:09:14 PM

Win 7 x64

With 0 pages open opera takes about 2.8 Ghz constantly.
Nothing happens. No settings change anything.

maluminse # Thursday, September 16, 2010 4:28:57 AM

wow thats a trip maga.. not normal.

occasionally i get something similar when i try to open the file prompt to search/upload files to a site. it hangs. maybe new opera took care to that could be a computer problem. on my end i think its my computer.

magarocule # Thursday, September 30, 2010 5:52:21 PM

I took an old config file that worked well and went through 1.5 pages of preferences but failed find the parameter. Gave up for the other 1.5 pages

I give you this: some parameter triggers something somewhere else, independent of it's own effect. Maybe in another parameter that doesn't get in the cfg...