jemalloc 4.2.0 发布,内存分配管理_html/css_WEB-ITnose
新特性:
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Add the arena..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..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
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Scale leak report summary according to sampling probability. ( @jasone)
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