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Re: free() does not physically trim/reclaim memory

From: Florian Weimer <fweimer at redhat dot com>
To: Shuxin Yang <shuxinyang dot oss at gmail dot com>, libc-help at sourceware dot org, agentzh at gmail dot com
Date: Mon, 12 Sep 2016 14:52:38 +0200
Subject: Re: free() does not physically trim/reclaim memory
Authentication-results: sourceware.org; auth=none
References: <57C8724B.3020707@gmail.com> <3354ddf3-60fd-1e80-d0ca-7036b8d487d4@redhat.com> <57C9A87D.5080109@gmail.com> <0eadacf2-565b-97bf-2c64-7e5d31844afd@redhat.com> <0fffd62b-ba3e-9caf-1ba7-1716d7bf5636@gmail.com>

On 09/09/2016 10:09 PM, Shuxin Yang wrote:

Hi,  Florian:

   Could you please elaborate bit more about the "traditional way"?

Try to allocate as much low memory as possible using a loop which callsmmap with PROT_NONE and a pointer hint. This is how OpenJDK and othersdo it.


Florian

References:
- free() does not physically trim/reclaim memory
  - From: shuxin yang
- Re: free() does not physically trim/reclaim memory
  - From: Florian Weimer
- Re: free() does not physically trim/reclaim memory
  - From: shuxin yang
- Re: free() does not physically trim/reclaim memory
  - From: Florian Weimer
- Re: free() does not physically trim/reclaim memory
  - From: Shuxin Yang

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