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Subject:	Re: [ATTN: procps maintainer] RealPageSize
To:	cygwin AT cygwin DOT com
References:	<CA+Wt6ppc=KaDq_2C+FA5CLRfyr4wo=x+RKS-B=GQDX4Gjnow7Q AT mail DOT gmail DOT com>
From:	Marco Atzeri <marco DOT atzeri AT gmail DOT com>
Message-ID:	<b0d84a38-9352-c84a-a5b2-8a25c7fa5e04@gmail.com>
Date:	Thu, 4 May 2017 18:27:12 +0200
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On 04/05/2017 17:00, Marty Shannon wrote:
> This fix for php (posted by ricardohenrylee AT gmail DOT com) should be
> applied to the code for "top"; it (and /usr/bin/time -v) think the
> page size is actually 64k, and reports RESident size as 16 times what
> it should be.
>
>  # if HAVE_UNISTD_H
>  #  include <unistd.h>
>  #  if defined(_SC_PAGESIZE)
> +#   ifdef __CYGWIN__
> +#    define REAL_PAGE_SIZE 4096
> +#   else
>  #    define REAL_PAGE_SIZE sysconf(_SC_PAGESIZE);
> +#   endif
>  #  elif defined(_SC_PAGE_SIZE)
>  #    define REAL_PAGE_SIZE sysconf(_SC_PAGE_SIZE);
>  #  endif
>
> Cheers,
> Marty
>

How is top measuring the memory of process ?

   /proc/<pid>/statm

should report the correct info in
sysconf(_SC_PAGESIZE) = 64K units.


https://cygwin.com/ml/cygwin-patches/2016-q4/msg00009.html

Regards
Marco

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