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| From | Ian Collins <ian-news@hotmail.com> |
|---|---|
| Newsgroups | comp.lang.c |
| Subject | Re: Will 'free' return the memory Immediately to the OS ? |
| Date | 2012-05-23 11:12 +1200 |
| Message-ID | <a22krcFntpU5@mid.individual.net> (permalink) |
| References | <joui61$898$1@speranza.aioe.org> <i20ar71d8m427086mra7ortps5up3tqa7v@4ax.com> <jp68q1$1ra$1@reader1.panix.com> <jp6ic1$lp6$1@dont-email.me> <jph1qc$bbl$1@reader1.panix.com> |
On 05/23/12 09:52 AM, Joe keane wrote: > In article<jp6ic1$lp6$1@dont-email.me>, > Stephen Sprunk<stephen@sprunk.org> wrote: >> I question whether this is a good idea. > > It is a good idea. These are -disk drives-. > > If your drive has a decent buffer, the time to get additional pages > could be no more than to transfer data over the bus. If only life were that simple! Consider a diskless client. The point you snipped: "The OS can have a larger page size. It's easy to make 16 KB pages on hardware that is designed for 4 KB pages. But not the other way around." A reasonable OS will allow multiple page sizes, in part to minimise the use of MMU slots when applications use large amounts of memory. One negative side effect is the bigger the page size an application uses, the more likely it is to hit an out of memory condition due to fragmentation. -- Ian Collins
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Will 'free' return the memory Immediately to the OS ? Raj Pashwar <raj121190@hotmail.NOSPAM.com> - 2012-05-15 21:34 +0000
Re: Will 'free' return the memory Immediately to the OS ? Ian Collins <ian-news@hotmail.com> - 2012-05-16 09:55 +1200
Re: Will 'free' return the memory Immediately to the OS ? James Kuyper <jameskuyper@verizon.net> - 2012-05-15 18:42 -0400
Re: Will 'free' return the memory Immediately to the OS ? Keith Thompson <kst-u@mib.org> - 2012-05-15 16:49 -0700
Re: Will 'free' return the memory Immediately to the OS ? Ben Pfaff <blp@cs.stanford.edu> - 2012-05-15 16:59 -0700
Re: Will 'free' return the memory Immediately to the OS ? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-05-15 20:24 -0400
Re: Will 'free' return the memory Immediately to the OS ? David T. Ashley <dashley@gmail.com> - 2012-05-16 13:29 -0400
Re: Will 'free' return the memory Immediately to the OS ? Stephen Sprunk <stephen@sprunk.org> - 2012-05-16 18:36 -0500
Re: Will 'free' return the memory Immediately to the OS ? David T. Ashley <dashley@gmail.com> - 2012-05-17 09:47 -0400
Re: Will 'free' return the memory Immediately to the OS ? Stephen Sprunk <stephen@sprunk.org> - 2012-05-17 11:22 -0500
Re: Will 'free' return the memory Immediately to the OS ? Kaz Kylheku <kaz@kylheku.com> - 2012-05-17 16:54 +0000
Re: Will 'free' return the memory Immediately to the OS ? Stephen Sprunk <stephen@sprunk.org> - 2012-05-18 12:30 -0500
Re: Will 'free' return the memory Immediately to the OS ? Keith Thompson <kst-u@mib.org> - 2012-05-17 14:09 -0700
Re: Will 'free' return the memory Immediately to the OS ? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-05-17 21:05 -0400
Re: Will 'free' return the memory Immediately to the OS ? Stephen Sprunk <stephen@sprunk.org> - 2012-05-18 17:41 -0500
Re: Will 'free' return the memory Immediately to the OS ? Eric Sosman <esosman@ieee-dot-org.invalid> - 2012-05-18 20:19 -0400
Re: Will 'free' return the memory Immediately to the OS ? Stephen Sprunk <stephen@sprunk.org> - 2012-05-22 15:08 -0500
Re: Will 'free' return the memory Immediately to the OS ? Ben Pfaff <blp@cs.stanford.edu> - 2012-05-22 13:45 -0700
Re: Will 'free' return the memory Immediately to the OS ? Robert Wessel <robertwessel2@yahoo.com> - 2012-05-23 03:02 -0500
Re: Will 'free' return the memory Immediately to the OS ? Robert Miles <milesrf@Usenet-News.net> - 2012-06-24 23:49 -0500
Re: Will 'free' return the memory Immediately to the OS ? Stephen Sprunk <stephen@sprunk.org> - 2012-06-26 10:33 -0500
Re: Will 'free' return the memory Immediately to the OS ? jgk@panix.com (Joe keane) - 2012-05-18 19:44 +0000
Re: Will 'free' return the memory Immediately to the OS ? Stephen Sprunk <stephen@sprunk.org> - 2012-05-18 17:27 -0500
Re: Will 'free' return the memory Immediately to the OS ? jgk@panix.com (Joe keane) - 2012-05-22 21:52 +0000
Re: Will 'free' return the memory Immediately to the OS ? Ian Collins <ian-news@hotmail.com> - 2012-05-23 11:12 +1200
Re: Will 'free' return the memory Immediately to the OS ? Robert Wessel <robertwessel2@yahoo.com> - 2012-05-23 03:15 -0500
Re: Will 'free' return the memory Immediately to the OS ? Robert Wessel <robertwessel2@yahoo.com> - 2012-05-17 11:54 -0500
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