zram 还真是个神器, macOS 和 Windows 有类似技术吗? - V2EX
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wweir
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zram 还真是个神器, macOS 和 Windows 有类似技术吗?

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  •   wweir
    wweir Mar 31, 2020 5965 views
    This topic created in 2218 days ago, the information mentioned may be changed or developed.

    看了网上的介绍,要么是浅尝辄止,要么是死扣代码,能深入到参数配置及其影响的介绍很少,所以用得也是不爽。

    随便瞄了一眼内核的文档,这玩意居然可以做到扩大两倍可用内存大小,这样能做的事情就很多了,2G 变 6G 、4G 变 12G,即使为了性能有所克制,翻倍也是轻轻松松。

    相应的,可以永远跟 swap 说拜拜了,这对云上读写很差的小机器还是很有意义的。

    zram 文档

    6 replies    2020-03-31 16:54:04 +08:00
    cheng6563
        1
    cheng6563  
       Mar 31, 2020 via Android
    Windows 10 只有自带内存压缩。
    Vegetable
        3
    Vegetable  
       Mar 31, 2020
    想起了被 Jadx decompile 支配的恐惧
    764664
        4
    764664  
       Mar 31, 2020
    In June 2013, Apple announced that it would include virtual memory compression in OS X Mavericks, using the Wilson-Kaplan WKdm algorithm.
    A 10 August 2015 "Windows Insider Preview" update for Windows 10 (build 10525) added support for RAM compression.

    macOS 和 Windows 都有
    hcocoa
        5
    hcocoa  
       Mar 31, 2020
    cxh116
        6
    cxh116  
       Mar 31, 2020
    Mac 的 Activity Monitor 就有显示被压缩多少内存.

    不过内存不足时一样卡,开 Chrome 反正 16G 内存是不够用.现在买新电脑,感觉至少得 32G 内存起.
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