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Re: GC pros and cons
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Re: GC pros and cons


  • Subject: Re: GC pros and cons
  • From: Chris Idou <email@hidden>
  • Date: Thu, 25 Jun 2009 20:59:18 -0700 (PDT)


I guess the necessity to scan and page in memory is a legitimate downside for VM systems. It's possible I've seen xcode pause when switching apps, but never thought about it being related to GC scans, but just paging in the app. I'd probably forgotten that XCode is GC.

...of course, the iPhone does not have virtual memory, so its not an issue there.




________________________________
From: Adam R. Maxwell <email@hidden>
To: cocoa-dev Dev <email@hidden>
Sent: Friday, 26 June, 2009 1:32:51 PM
Subject: Re: GC pros and cons


On Jun 25, 2009, at 8:19 PM, Chris Idou wrote:

> I still use XCode in one location where I work on a core-solo Mini. Performance is good. No problems at all, no pauses.

Interesting.  I found the Xcode editor to be unusably slow on a PowerBook G4 when Leopard was released; in fact, contrary to Bill's statement, I found that it grew worse in the last few months of Leopard seeding.  I'm still sore about having to buy a MacBook Pro just to avoid beachballs while typing (rdar://problem/5572897).  Even said MacBook Pro needs 4 GB of RAM to avoid hanging when switching to Xcode, since the collector thread evidently causes paging in to scan memory (which caused a beachball and hiccups switching apps in Spaces).


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References: 
 >Re: GC pros and cons (From: Quincey Morris <email@hidden>)
 >Re: GC pros and cons (From: Chris Idou <email@hidden>)
 >RE: GC pros and cons (From: Jeff Laing <email@hidden>)
 >Re: GC pros and cons (From: "Stephen J. Butler" <email@hidden>)
 >RE: GC pros and cons (From: Jeff Laing <email@hidden>)
 >Re: GC pros and cons (From: Quincey Morris <email@hidden>)
 >RE: GC pros and cons (From: Jeff Laing <email@hidden>)
 >Re: GC pros and cons (From: Peter Duniho <email@hidden>)
 >Re: GC pros and cons (From: Michael Ash <email@hidden>)
 >Re: GC pros and cons (From: Michael Ash <email@hidden>)
 >Re: GC pros and cons (From: Peter Duniho <email@hidden>)
 >Re: GC pros and cons (From: Bill Bumgarner <email@hidden>)
 >Re: GC pros and cons (From: Chris Idou <email@hidden>)
 >Re: GC pros and cons (From: Rob Keniger <email@hidden>)
 >Re: GC pros and cons (From: Chris Idou <email@hidden>)
 >Re: GC pros and cons (From: "Adam R. Maxwell" <email@hidden>)

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