At 7:26 AM +1100 1/16/2009, dorayme wrote: > > One further observation... When pushed into the background then >> hidden, both Safari and WebKit quickly drop below 5% CPU usage. >> WebKit actually hits 0.2%. Firefox, however, hovers from 17 to 23%. >> Looks like the Moz guys don't bother to idle out their threads when >> there's noone viewing the pages. > >I have always wondered about keeping apps open and for a while, on OS >X, still had the old habit from OS <9 days of quitting apps not being >used (it still itches my brain and is occasionally scratched by >closing a few apps I am probably not going to use for an hour or >two...). > >So, it does matter a bit! Interesting observation, Dan.
If the tabs are closed, the CPU usage drops to nil. IOW, the problem is that Firefox allows javascripts to continue running in the background. This has nothing to do with any "savings" created by generally quitting apps. All things being equal, idle processes are eventually paged out - so both their cpu and memory usage goes to practically zero. Then there is a savings when you flip back to them. Simply paging in a task in is a LOT faster than total image activation (launch - ie, creating a process, creating virtual memory space, opening and mapping libraries, mapping the app, paging in its main, initializing each framework, etc etc etc). - Dan. -- - Psychoceramic Emeritus; South Jersey, USA, Earth --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed Low End Mac's G3-5 List, a group for those using G3, G4, and G5 desktop Macs - with a particular focus on Power Macs. The list FAQ is at http://lowendmac.com/lists/g-list.shtml and our netiquette guide is at http://www.lowendmac.com/lists/netiquette.shtml To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/g3-5-list?hl=en Low End Mac RSS feed at feed://lowendmac.com/feed.xml -~----------~----~----~----~------~----~------~--~---
