新闻 jemalloc 4.2.0 发布，内存分配管理 下载

jemalloc 4.2.0 发布了。

新特性：

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  Add the arena.<i>.reset mallctl, which makes it possible to discard all of an arena's allocations in a single operation. (@jasone)
  
  
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  Add the stats.retained and stats.arenas.<i>.retained statistics. (@jasone)
  
  
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  Add the --with-version configure option. (@jasone)
  
  
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  Support --with-lg-page values larger than actual page size. (@jasone)
  

优化：

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  Use pairing heaps rather than red-black trees for various hot data structures. (@djwatson, @jasone)
  
  
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  Streamline fast paths of rtree operations. (@jasone)
  
  
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  Optimize the fast paths of calloc() and [m,d,sd]allocx(). (@jasone)
  
  
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  Decommit unused virtual memory if the OS does not overcommit. (@jasone)
  
  
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  Specify MAP_NORESERVE on Linux if [heuristic] overcommit is active, in order to avoid unfortunate interactions during fork(2). (@jasone)
  

Bug 修复:

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  Fix chunk accounting related to triggering gdump profiles. (@jasone)
  
  
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  Link against librt for clock_gettime(2) if glibc < 2.17. (@jasone)
  
  
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  Scale leak report summary according to sampling probability. (@jasone)
  

下载地址：

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  jemalloc-4.2.0.tar.bz2
  
  
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  Source code (zip)
  
  
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  Source code (tar.gz)
  

jemalloc 4.2.0 发布，内存分配管理下载地址