Author: Armin Rigo <[email protected]> Branch: extradoc Changeset: r767:547759aa9d78 Date: 2016-07-14 14:04 +0200 http://bitbucket.org/pypy/pypy.org/changeset/547759aa9d78/
Log: Windows madvise_free() supported too diff --git a/compat.html b/compat.html --- a/compat.html +++ b/compat.html @@ -125,11 +125,11 @@ the program finishes running in the meantime). See <a class="reference external" href="http://pypy.readthedocs.org/en/latest/cpython_differences.html#differences-related-to-garbage-collection-strategies";>more details here</a>.</p> <p>Note that PyPy returns unused memory to the operating system if there -is a madvise() system call (at least Linux, OS/X, BSD). It is +is a madvise() system call (at least Linux, OS/X, BSD) or on Windows. It is important to realize that you may not see this in <tt class="docutils literal">top</tt>. The unused pages are marked with <tt class="docutils literal">MADV_FREE</tt>, which tells the system “if you need more memory at some point, grab this page”. As long as memory is -plentiful, the <tt class="docutils literal">RES</tt> column in <tt class="docutils literal">top</tt> remains high. (Exceptions to +plentiful, the <tt class="docutils literal">RES</tt> column in <tt class="docutils literal">top</tt> might remains high. (Exceptions to this rule are systems with no <tt class="docutils literal">MADV_FREE</tt>, where we use <tt class="docutils literal">MADV_DONTNEED</tt>, which forcefully lowers the <tt class="docutils literal">RES</tt>. This includes Linux <= 4.4.)</p> diff --git a/source/compat.txt b/source/compat.txt --- a/source/compat.txt +++ b/source/compat.txt @@ -115,11 +115,11 @@ here`_. Note that PyPy returns unused memory to the operating system if there -is a madvise() system call (at least Linux, OS/X, BSD). It is +is a madvise() system call (at least Linux, OS/X, BSD) or on Windows. It is important to realize that you may not see this in ``top``. The unused pages are marked with ``MADV_FREE``, which tells the system "if you need more memory at some point, grab this page". As long as memory is -plentiful, the ``RES`` column in ``top`` remains high. (Exceptions to +plentiful, the ``RES`` column in ``top`` might remains high. (Exceptions to this rule are systems with no ``MADV_FREE``, where we use ``MADV_DONTNEED``, which forcefully lowers the ``RES``. This includes Linux <= 4.4.) _______________________________________________ pypy-commit mailing list [email protected] https://mail.python.org/mailman/listinfo/pypy-commit
