3 ms·

A mystery is made extra-mysterious by the nonstandard abbreviations in the article. What's a "Tb"? It's not bits. Does he mean terabyte? tebibyte? Same for "Gb"

A mystery is made extra-mysterious by the nonstandard abbreviations in the article. What's a "Tb"? It's not bits. Does he mean terabyte? tebibyte? Same for "Gb". It's mostly about disk space, so it's powers of 10 right? Except it's memory-mapped, and memory's in powers of 2. Here you go: https://en.wikipedia.org/wiki/Byte#Multiple-byte_units https://en.wikipedia.org/wiki/Byte#Multiple-byte_units

two_handfuls 3y ago
Yeah that’s sloppy.
Dylan16807 3y ago
If you're confident that it's not bits, then it must be bytes. So that's not a mystery. Not that it would affect the meaning of the article anyway. So that just leaves the nitpick about powers of ten and two. Why do you think it matters? The numbers are rounded anyway, so... it's both. Enjoy.
- NoZebra120vClip 3y ago
  Perhaps it works for e.e. cummings, but if the author professes to be a SWE, and can't/won't express standard units in standard format, especially in a rendering that actually means something else, author looks lazy and ignorant. Do you want hallucinating AIs? Because this is how we get hallucinating AIs.
  - deleted 3y ago
    [deleted]
  - Dylan16807 3y ago
    This is way too strong of a complaint for just capitalization. And except for the capitalization, everything is a standard unit and nothing is incorrect. That wiki article is irrelevant. You may be unsure if they were intending base 10 or base 2, but that doesn't affect the correctness. It's both, because the numbers are very approximate.
    - NoZebra120vClip 3y ago
      You keep insisting that the numbers are approximate, yet there's one very real and concrete number included in this article: the 2GiB limit for Java memory-mapped files. https://bugs.openjdk.org/browse/JDK-6347833 https://bugs.openjdk.org/browse/JDK-6347833 There is/was a very real hard limit on memory-mapping files, because the index was held in a 32-bit pointer with "Integer.MAX_VALUE". There is no rounding or approximation there: it's 2^32-1 bytes, with no ifs, ands, or buts. Two gibibytes is 2,147,483,648 bytes, while two gigabytes is 2,000,000,000 bytes. That's an approximation of ±147,483,648! Wow!
      - Dylan16807 3y ago
        And the total mapping is 200x as big. It doesn't matter.

two_handfuls 3y ago

Yeah that’s sloppy.

Dylan16807 3y ago

If you're confident that it's not bits, then it must be bytes. So that's not a mystery. Not that it would affect the meaning of the article anyway. So that just leaves the nitpick about powers of ten and two. Why do you think it matters? The numbers are rounded anyway, so... it's both. Enjoy.

NoZebra120vClip 3y ago
Perhaps it works for e.e. cummings, but if the author professes to be a SWE, and can't/won't express standard units in standard format, especially in a rendering that actually means something else, author looks lazy and ignorant. Do you want hallucinating AIs? Because this is how we get hallucinating AIs.
- deleted 3y ago
  [deleted]
- Dylan16807 3y ago
  This is way too strong of a complaint for just capitalization. And except for the capitalization, everything is a standard unit and nothing is incorrect. That wiki article is irrelevant. You may be unsure if they were intending base 10 or base 2, but that doesn't affect the correctness. It's both, because the numbers are very approximate.
  - NoZebra120vClip 3y ago
    You keep insisting that the numbers are approximate, yet there's one very real and concrete number included in this article: the 2GiB limit for Java memory-mapped files. https://bugs.openjdk.org/browse/JDK-6347833 https://bugs.openjdk.org/browse/JDK-6347833 There is/was a very real hard limit on memory-mapping files, because the index was held in a 32-bit pointer with "Integer.MAX_VALUE". There is no rounding or approximation there: it's 2^32-1 bytes, with no ifs, ands, or buts. Two gibibytes is 2,147,483,648 bytes, while two gigabytes is 2,000,000,000 bytes. That's an approximation of ±147,483,648! Wow!
    - Dylan16807 3y ago
      And the total mapping is 200x as big. It doesn't matter.