38 lines
1.4 KiB
Markdown
38 lines
1.4 KiB
Markdown
|
---
|
||
|
|
aliases:
|
||
|
|
tags:
|
||
|
|
- maturity/🌱
|
||
|
|
date: 2024-11-04
|
||
|
|
---
|
||
|
|
```
|
||
|
|
L1 cache reference ......................... 0.5 ns
|
||
|
|
Branch mispredict ............................ 5 ns
|
||
|
|
L2 cache reference ........................... 7 ns
|
||
|
|
Mutex lock/unlock ........................... 25 ns
|
||
|
|
Main memory reference ...................... 100 ns
|
||
|
|
Compress 1K bytes with Zippy ............. 3,000 ns = 3 µs
|
||
|
|
Send 2K bytes over 1 Gbps network ....... 20,000 ns = 20 µs
|
||
|
|
SSD random read ........................ 150,000 ns = 150 µs
|
||
|
|
Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs
|
||
|
|
Round trip within same datacenter ...... 500,000 ns = 0.5 ms
|
||
|
|
Read 1 MB sequentially from SSD* ..... 1,000,000 ns = 1 ms
|
||
|
|
Disk seek ........................... 10,000,000 ns = 10 ms
|
||
|
|
Read 1 MB sequentially from disk .... 20,000,000 ns = 20 ms
|
||
|
|
Send packet CA->Netherlands->CA .... 150,000,000 ns = 150 ms
|
||
|
|
```
|
||
|
|
|
||
|
|
![[../../meta/files/images/Pasted image 20241104204304.png]]
|
||
|
|
***
|
||
|
|
## Мета информация
|
||
|
|
**Область**:: [[../../meta/zero/00 Разработка|00 Разработка]]
|
||
|
|
**Родитель**::
|
||
|
|
**Источник**::
|
||
|
|
**Создана**:: [[2024-11-04]]
|
||
|
|
**Автор**::
|
||
|
|
### Дополнительные материалы
|
||
|
|
-
|
||
|
|
|
||
|
|
### Дочерние заметки
|
||
|
|
<!-- QueryToSerialize: LIST FROM [[]] WHERE contains(Родитель, this.file.link) or contains(parents, this.file.link) -->
|
||
|
|
|