Numbers Everyone Should Know
作者:
王劲凯 | 来源:发表于
2019-12-18 14:36 被阅读0次
| type |
numbers |
| L1 cache reference |
0.5 ns |
| Branch mispredict |
5 ns |
| L2 cache reference |
7 ns |
| Mutex lock/unlock |
25ns |
| Main memory reference |
100ns |
| Compress 1K bytes with Zippy |
3000 ns |
| Send 2K bytes over 1Gbps network |
20000 ns |
| Read 1 MB sequentially from memory |
250000 ns |
| Round trip within same datacenter |
500000 ns |
| Disk seek |
10000000 ns |
| Read 1 MB sequentially from disk |
20000000 ns |
| Send packet CA->Netherlands->CA |
150000000 ns |
本文标题：Numbers Everyone Should Know
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