Ceph Storage의 Block Device (RBD) 에 대한 성능 테스트 방법입니다.
1. pool 생성
rbd을 지원하는 pool 생성 또는 기존 pool에 rbd 타입을 추가한다.
2. pool 에 image 생성
3. image 쓰기 성능 테스트
[ceph: root@cnode1 /]# rbd bench --io-type write image01 --pool=testbench
bench type write io_size 4096 io_threads 16 bytes 1073741824 pattern sequential
SEC OPS OPS/SEC BYTES/SEC
1 6256 4850.97 19 MiB/s
2 6448 3178.13 12 MiB/s
3 6640 2216.56 8.7 MiB/s
4 6944 1678.81 6.6 MiB/s
5 7232 1402.82 5.5 MiB/s
6 7744 310.144 1.2 MiB/s
7 8176 329.284 1.3 MiB/s
8 8480 347.975 1.4 MiB/s
9 8784 363.295 1.4 MiB/s
10 9328 424.914 1.7 MiB/s
11 9920 438.025 1.7 MiB/s
12 10352 444.648 1.7 MiB/s
13 10720 465.236 1.8 MiB/s
14 11120 481.474 1.9 MiB/s
15 11440 422.252 1.6 MiB/s
16 11888 397.595 1.6 MiB/s
17 12400 398.076 1.6 MiB/s
18 12880 428.933 1.7 MiB/s
19 13312 431.517 1.7 MiB/s
... ... ... ...
168 256576 1237.57 4.8 MiB/s
169 257616 1088.11 4.3 MiB/s
170 259456 1293.32 5.1 MiB/s
171 261200 1393.04 5.4 MiB/s
elapsed: 173 ops: 262144 ops/sec: 1510.07 bytes/sec: 5.9 MiB/s
동일한 기능으로 다음과 같은 command 사용이 가능하다.
[ceph: root@cnode1 /]# rbd bench-write image02 --pool=testbench
rbd: bench-write is deprecated, use rbd bench --io-type write ...
bench type write io_size 4096 io_threads 16 bytes 1073741824 pattern sequential
SEC OPS OPS/SEC BYTES/SEC
1 6352 5475.76 21 MiB/s
2 6608 2883.9 11 MiB/s
3 6880 2290.38 8.9 MiB/s
... ... ... ...
쓰기 성능 테스트를 완료하고 image에 대한 상태를 확인할 수 있다.
4. image 읽기 성능 테스트
[ceph: root@cnode1 /]# rbd bench --io-type read image01 --pool=testbench
bench type read io_size 4096 io_threads 16 bytes 1073741824 pattern sequential
SEC OPS OPS/SEC BYTES/SEC
1 144 149.821 599 KiB/s
2 832 419.618 1.6 MiB/s
3 1888 634.914 2.5 MiB/s
4 2448 614.652 2.4 MiB/s
5 3728 747.198 2.9 MiB/s
6 4448 867.616 3.4 MiB/s
7 4736 768.245 3.0 MiB/s
8 4976 614.195 2.4 MiB/s
9 5280 559.826 2.2 MiB/s
10 5504 355.718 1.4 MiB/s
11 5696 251.07 1004 KiB/s
12 5904 238.381 954 KiB/s
13 6176 239.248 957 KiB/s
14 6624 272.245 1.1 MiB/s
15 7376 374.346 1.5 MiB/s
16 7904 437.946 1.7 MiB/s
... ... ... ...
313 258464 991.83 3.9 MiB/s
314 259488 924.239 3.6 MiB/s
315 260768 1033.04 4.0 MiB/s
316 261280 1075.02 4.2 MiB/s
elapsed: 316 ops: 262144 ops/sec: 827.236 bytes/sec: 3.2 MiB/s
5. image 삭제
[ceph: root@cnode1 /]# rbd list -p testbench
image01
image02
[ceph: root@cnode1 /]# rbd -p testbench rm image02
Removing image: 100% complete...done.
[ceph: root@cnode1 /]# rbd list -p testbench
image01
Original
https://www.ibm.com/docs/en/storage-ceph/7?topic=benchmark-benchmarking-ceph-block-performance
Benchmarking Ceph block performance
Ceph includes the rbd bench-write command to test sequential writes to the block device measuring throughput and latency. The default byte size is 4096, the default number of I/O threads is 16, and the default total number of bytes to write is 1 GB. These
www.ibm.com
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