vm_stat显示的内存少于实际内存 [英] vm_stat displays less memory than in real

问题描述

更新:

因此，重新启动Mac即可完成工作，但此错误有任何已知原因吗?

So, restarting the mac did the work but any known reason for this bug?

我正在使用vm_stat来计算RAM信息，例如此处

I'm using vm_stat to calculate RAM info like here

但是，当我尝试将所有值相加并将其与页面大小乘以im时得出的近似值.减少1.3gb.

But when I try to add all the values and multiply it with page size im getting approx. 1.3gb less.

Mach Virtual Memory Statistics: (page size of 4096 bytes)
Pages free:                               22064.
Pages active:                            580105.
Pages inactive:                          472217.
Pages speculative:                         5594.
Pages throttled:                              0.
Pages wired down:                        559999.
Pages purgeable:                          29101.
"Translation faults":                 261945239.
Pages copy-on-write:                    6941679.
Pages zero filled:                    165324784.
Pages reactivated:                     14573079.
Pages purged:                           1602247.
File-backed pages:                       203023.
Anonymous pages:                         854893.
Pages stored in compressor:             1732046.
Pages occupied by compressor:            456427.
Decompressions:                        11423912.
Compressions:                          20641865.
Pageins:                                4475678.
Pageouts:                                 32877.
Swapins:                                1714616.
Swapouts:                               2389086.

因此，通过将前6个值相加并乘以页面大小，即时通讯会获得6.7GB，但我的mac计算机具有8GB.

So by adding first 6 values and multiplying with page size, im getting 6.7GB but my mac has 8GB.

那怎么了?

谢谢！

这是结果

重启后

推荐答案

在我看来，您需要添加压缩机占用的页面".这样您几乎可以达到8GB.重新启动可能只是将其重置为零，所以没关系.

It looks to me like you need to add in "Pages occupied by compressor". That gets you to almost exactly 8GB. The reboot probably just reset that to zero so it didn't matter.

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