分布式文件系统：SeaweedFS
bger
9年前
SeaweedFS 是简单，高伸缩性的分布式文件系统，包含两部分：存储数十亿的文件；快速为文件服务。SeaweedFS 作为支持全 POSIX 文件系统语义替代，Seaweed-FS 选择仅实现 key-file 的映射，类似 "NoSQL"，也可以说是 "NoFS"。
SeaweedFS 仅花费 40 字节的硬盘来存储每个文件的元数据。
基准测试基于 Mac Book，固态硬盘，CPU：1 Intel Core i7 2.6GHz。
编写 1 百万的 1KB 文件：
Concurrency Level: 16 Time taken for tests: 88.796 seconds Complete requests: 1048576 Failed requests: 0 Total transferred: 1106764659 bytes Requests per second: 11808.87 [#/sec] Transfer rate: 12172.05 [Kbytes/sec] Connection Times (ms) min avg max std Total: 0.2 1.3 44.8 0.9 Percentage of the requests served within a certain time (ms) 50% 1.1 ms 66% 1.3 ms 75% 1.5 ms 80% 1.7 ms 90% 2.1 ms 95% 2.6 ms 98% 3.7 ms 99% 4.6 ms 100% 44.8 ms
自由读取 1 百万文件：
Concurrency Level: 16 Time taken for tests: 34.263 seconds Complete requests: 1048576 Failed requests: 0 Total transferred: 1106762945 bytes Requests per second: 30603.34 [#/sec] Transfer rate: 31544.49 [Kbytes/sec] Connection Times (ms) min avg max std Total: 0.0 0.5 20.7 0.7 Percentage of the requests served within a certain time (ms) 50% 0.4 ms 75% 0.5 ms 95% 0.6 ms 98% 0.8 ms 99% 1.2 ms 100% 20.7 ms