ru.unix.bsd

 
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 From : Slawa Olhovchenkov                   2:5030/500     20 Jan 2008  21:25:06
 To : All
 Subject : Вести с полей
 -------------------------------------------------------------------------------- 
 

 
 jasone      2007-12-27 23:29:44 UTC
 
   FreeBSD src repository
 
   Modified files:
     lib/libc/stdlib      malloc.3 malloc.c
   Log:
   Add the 'D' and 'M' run time options, and use them to control whether
   memory is acquired from the system via sbrk(2) and/or mmap(2).  By default,
   use sbrk(2) only, in order to support traditional use of resource limits.
   Additionally, when both options are enabled, prefer the data segment to
   anonymous mappings, in order to coexist better with large file mappings
   in applications on 32-bit platforms.  This change has the potential to
   increase memory fragmentation due to the linear nature of the data
   segment, but from a performance perspective this is mitigated by the use
   of madvise(2). [1]
 
   Add the ability to interpret integer prefixes in MALLOC_OPTIONS
   processing.  For example, MALLOC_OPTIONS=lllllllll can now be specified as
   MALLOC_OPTIONS=9l.
 
   Reported by:    [1] rwatson
   Design review:  [1] alc, peter, rwatson
 
 jasone      2008-01-03 23:22:13 UTC
 
   FreeBSD src repository
 
   Modified files:
     lib/libc/stdlib      malloc.3 malloc.c
   Log:
   Enable both sbrk(2)- and mmap(2)-based memory acquisition methods by
   default.  This has the disadvantage of rendering the datasize resource
   limit irrelevant, but without this change, legitimate uses of more
   memory than will fit in the data segment are thwarted by default.
 
   Fix chunk_alloc_mmap() to work correctly if initial mapping is not
   chunk-aligned and mapping extension fails.
 ... Давайте поговоpим о некотоpых свойствах нашей опеpационной системы.
 --- GoldED+/BSD 1.1.5
  * Origin:  (2:5030/500)
 
 

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