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Update values for Vertex #791

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merged 8 commits into from
May 23, 2024
Merged

Update values for Vertex #791

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d3ac8cf
Update
kgolubic May 22, 2024
6243a33
Update Delta values
kgolubic May 22, 2024
df31181
Fix typo
kgolubic May 22, 2024
d15c68a
Update code
kgolubic May 22, 2024
3dc4b27
Update values
kgolubic May 22, 2024
4ca8a96
Update one
kgolubic May 22, 2024
a9b3bab
Update calculations
kgolubic May 22, 2024
f1fb65f
Merge branch 'memgraph-2-17' into 790-update-values-for-vertex
kgolubic May 23, 2024
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12 changes: 6 additions & 6 deletions pages/fundamentals/storage-memory-usage.mdx
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Original file line number Diff line number Diff line change
Expand Up @@ -489,8 +489,8 @@ Each `Delta` object has a least **56B**.

{<h4> <code>Vertex</code> memory layout </h4>}

Each `Vertex` object has at least **112B** + **56B** for the `Delta` object, in
total, a minimum of **168B**.
Each `Vertex` object has at least **88B** + **56B** for the `Delta` object, in
total, a minimum of **144B**.

Each additional label takes **4B**.

Expand Down Expand Up @@ -578,7 +578,7 @@ Let's assume the name on average has $3\text{B}+10\text{B} = 13\text{B}$ (each
name is on average 10 characters long). One the average values are included, the
calculation is:

$19,148 \times (112\text{B} + 13\text{B} + 16\text{B} + 16\text{B} + 56\text{B}) = 19,148 \times 213\text{B} = 4,078,524\text{B}.$
$19,148 \times (88\text{B} + 13\text{B} + 16\text{B} + 16\text{B} + 56\text{B}) = 19,148 \times 189\text{B} = 3,618,972\text{B}.$

The remaining 2,584 vertices are the `ComicSeries` vertices with the `title` and
`publishYear` properties. Let's assume that the `title` property is
Expand All @@ -590,9 +590,9 @@ list occupies $3 \times 2\text{B} \times 2\text{B} = 12\text{B}$. Using the same
formula as above, but being careful to include both `title` and `publishYear`
properties, the calculation is:

$2584 \times (112\text{B} + 13\text{B} + 12\text{B} + 16\text{B} + 16\text{B} + 56\text{B}) = 2584 \times 225\text{B} = 581,400\text{B}.$
$2584 \times (88\text{B} + 13\text{B} + 12\text{B} + 16\text{B} + 16\text{B} + 56\text{B}) = 2584 \times 201\text{B} = 519,384\text{B}.$

In total, $4,659,924\text{B}$ to store vertices.
In total, $4,138,356\text{B}$ to store vertices.

The edges don't have any properties on them, so the formula is as follows:

Expand Down Expand Up @@ -626,7 +626,7 @@ $3 \times 21,723 \times (80\text{B}+13\text{B}+16\text{B})= 65,169 \times 109\te

Now let's sum up everything we calculated:

$4,659,924\text{B} + 87,416,704\text{B} + 2,606,760\text{B} + 7,103,421\text{B} = 101,786,809 \text{B} \approx 102\text{MB}.$
$4,138,356\text{B} + 87,416,704\text{B} + 2,606,760\text{B} + 7,103,421\text{B} = 101,265,241 \text{B} \approx 99\text{MB}.$

Bear in mind the number can vary because objects can have higher overhead due to
the additional data.
Expand Down