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| author | Drew DeVault <sir@cmpwn.com> | 2019-07-19 15:41:10 -0400 |
|---|---|---|
| committer | Drew DeVault <sir@cmpwn.com> | 2019-07-19 15:41:10 -0400 |
| commit | a8795f2732b360b5932d54302e8bb8dc919055c4 (patch) | |
| tree | 474785227765b92bea5eb2763ca7d10827198f2f | |
| parent | c3bf8b6bb2505ce10032c46009f1cf6f71583e6c (diff) | |
Fix exbibytes estimate
| -rw-r--r-- | _posts/2018-10-29-How-does-virtual-memory-work.md | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/_posts/2018-10-29-How-does-virtual-memory-work.md b/_posts/2018-10-29-How-does-virtual-memory-work.md index dc87657..dfb6b93 100644 --- a/_posts/2018-10-29-How-does-virtual-memory-work.md +++ b/_posts/2018-10-29-How-does-virtual-memory-work.md @@ -14,7 +14,7 @@ bytes, and in this article I'll explain how. An astute reader of my earlier article may have considered that pointers on, say, an x86_64 system, are 64 bits long[^1]. With this, we can address up to -18,446,744,073,709,551,616 bytes (18.4 exbibytes[^2]) of memory. I only have 16 +18,446,744,073,709,551,616 bytes (16 exbibytes[^2]) of memory. I only have 16 GiB of RAM on this computer, so what gives? What's the rest of the address space for? The answer: all kinds of things! Only a small subset of your address space is mapped to physical RAM. A system on your computer called the MMU, or Memory |