IBM Power9 9009-22A
- 512GB DDR4 Memory
- 2x 8-Core Power9 Processor
- 2x400GB NVMe M.2 SSD for rootvg
- 16Gb FC 2 Port Adapter Pair
- FW910.20 (VL910_122) firmware
- AIX 7.2 ML3
- AIX_AAPCM mpio driver
- algorithmset set to shortest_queue
- reserve_policy set to no_reserve
- queue_depth set to 32
IBM StorWize V7000 GEN3
- 17x 1.92TB 2.5In NVMe Flash Drive
- 16Gb FC 4 Port Adapter Pair
- 120 GB M.2 Boot Drive Pair
- Spectrum 8.2.1.1
Benchmarks
- Random I/O and Sequential I/O with 8K 1 Thread
- Random I/O and Sequential I/O with 8K 32 Threads
- Random I/O and Sequential I/O with 1M 1 Thread
- Random I/O and Sequential I/O with 1M 32 Threads
- 100% Read and 100% Write
- 50% Read and 50% Write (backup I/O profile)
- 80% Read and 20% Write (OLTP database I/O profile)
The tests will be done using XDISK V8.6 for AIX 7.2 with -ORW flags specific for AIX to benchmark the storage array and bypass VMM cache.
Summary
- As we increase the block size and number of threads so does the performance up to a certain point. The hardware is capable of high performance without having to go and tweak a lot of things.
- Technical information related to setting up FC-NVMe instead of FC (SCSI) seems to be non existing for the GEN3 and/or AIX at time of writing.
- DRAID6 seems like a good alternative to the traditional RAID10 even for critical workloads, if you are concerned about disk failures then configure it for two rebuild areas which allows you to loose two disks.
- If you are upgrading from a RAID10 spinning disk (15K) array to NVMe SSD array, strongly consider DRAID6 as an alternative.
- It was not possible to assign a stand-by hot-spare in a DRAID6 configuration, you can still mark an SSD as a spare but the software will not automatically consume it if a disk fails.
- No issues whatsoever failing one of the active/active storage nodes and monitoring the events inside AIX, everything worked as expected in a redundant path host and storage configuration.
Traditional Raid 10 Benchmarks
(two mdisk devices, total of 16 drives + 1 spare)
Random I/O
8K Block Size
1 Thread
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 100 R -RW 236587 1848 0.001 0.157 0.003 0.005 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 0 R -RW 4015 31.4 0.0 0.0 0.0 0.0 0.001 3.24 0.247 0.242
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 50 R -RW 7832 61.2 0.001 0.026 0.004 0.005 0.001 4.48 0.248 0.242
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 80 R -RW 18509 144.6 0.001 0.053 0.003 0.005 0.001 9.25 0.248 0.242
Sequential I/O
8K Block Size
1 Thread
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 100 S -RW 345942 2703 0.001 0.949 0.002 0.005 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 0 S -RW 3123 24.4 0.0 0.0 0.0 0.0 0.001 3.97 0.319 0.315
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 50 S -RW 6710 52.4 0.002 0.030 0.003 0.005 0.001 4.14 0.293 0.277
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 80 S -RW 17871 139.6 0.001 1.60 0.003 0.005 0.001 3.73 0.265 0.241
Random I/O
8K Block Size
16 Threads
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 100 R -RW 1505683 11763 0.001 1.90 0.003 0.005 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 0 R -RW 33141 258.9 0.0 0.0 0.0 0.0 0.001 8.78 0.480 0.399
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 50 R -RW 62571 488.8 0.001 15.7 0.022 0.005 0.001 6.34 0.485 0.401
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 80 R -RW 151339 1182 0.001 6.95 0.010 0.005 0.001 6.68 0.479 0.398
Sequential I/O
8K Block Size
16 Threads
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 100 S -RW 3581072 27977 0.001 90.0 0.004 0.005 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 0 S -RW 28645 223.8 0.0 0.0 0.0 0.0 0.001 7.44 0.557 0.527
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 50 S -RW 58762 459.1 0.001 9.32 0.027 0.005 0.001 7.25 0.515 0.460
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 80 S -RW 148521 1160 0.001 8.02 0.010 0.005 0.001 7.43 0.495 0.390
Random I/O
16K Block Size
1 Thread
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 100 R -RW 178765 2793 0.001 0.258 0.004 0.005 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 0 R -RW 3966 31.0 0.0 0.0 0.0 0.0 0.001 9.54 0.250 0.241
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 50 R -RW 7289 113.9 0.002 0.032 0.004 0.005 0.001 3.64 0.265 0.256
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 80 R -RW 17327 270.7 0.002 0.143 0.004 0.005 0.001 3.76 0.263 0.254
Sequential I/O
16K Block Size
1 Thread
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 100 S -RW 238870 3732 0.001 0.259 0.003 0.005 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 0 S -RW 3366 52.6 0.0 0.0 0.0 0.0 0.001 3.94 0.295 0.281
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 50 S -RW 7028 109.8 0.002 0.047 0.005 0.005 0.001 3.67 0.277 0.263
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 80 S -RW 17454 272.7 0.002 0.176 0.004 0.005 0.001 3.69 0.265 0.253
Random I/O
1MB Block Size
1 Thread
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 100 R -RW 5847 5847 0.001 1.52 0.169 0.169 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 0 R -RW 4161 32.5 0.0 0.0 0.0 0.0 0.001 3.55 0.238 0.232
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 50 R -RW 756 756.0 0.058 0.249 0.173 0.173 1.32 5.61 2.40 2.38
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 80 R -RW 1589 1589 0.039 1.65 0.172 0.172 1.29 5.39 2.38 2.37
Sequential I/O
1MB Block Size
1 Thread
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 100 S -RW 5215 5215 0.001 1.50 0.191 0.188 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 0 S -RW 410 410.0 0.0 0.0 0.0 0.0 1.21 5.20 2.36 2.35
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 50 S -RW 767 767.0 0.103 0.323 0.173 0.174 1.26 5.01 2.36 2.35
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 80 S -RW 1409 1409 0.001 1.51 0.200 0.192 1.70 5.11 2.67 2.66
Random I/O
1MB Block Size
16 Threads
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 100 R -RW 78682 78682 0.001 130 0.201 0.195 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 0 R -RW 33581 262.4 0.0 0.0 0.0 0.0 0.001 5.88 0.474 0.391
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 50 R -RW 2325 2325 0.001 80.8 0.616 0.201 2.94 81.2 13.0 11.5
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 80 R -RW 6610 6610 0.001 49.7 0.346 0.197 2.84 34.4 10.6 10.8
Sequential I/O
1MB Block Size
16 Threads
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 100 S -RW 76001 76001 0.001 57.8 0.210 0.205 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 0 S -RW 1351 1351 0.0 0.0 0.0 0.0 2.98 43.2 11.7 11.0
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 50 S -RW 2659 2659 0.001 70.1 0.612 0.231 2.96 43.1 11.3 11.0
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 80 S -RW 6602 6602 0.001 51.5 0.349 0.200 3.03 34.6 10.6 10.8
Distributed Raid 6 Benchmarks (DRAID6)
(1 mdisk device, 16 drives, 2 rebuild areas, 1 spare)
Name: Pool0
State: Online
Capacity: 15.49 TiB / 20.23 TiB (77%)
Volumes: 1
MDisks: 1
Encryption: Not Encrypted
Data reduction: Enabled
Easy tier: Balanced
Extent size: 1.00 GiB
Free physical capacity: 4.75 TiB
Reclaimable capacity: 0 bytes
Name: mdisk0
State: Online
Capacity: 20.26 TiB
Pool: Pool0
Mode: Array
Write protected: No
Tier: Tier 0 Flash
Encryption: Not Encrypted
Deduplication: Not Active
Fast-Write state: Empty
Thin-Provisioned: No
Supports unmap: Yes
RAID level: Distributed RAID 6
Redundancy: 2
Rebuild Areas goal: 2
Rebuild Areas Total: 2
Strip size: 256 KiB
Random I/O
8K Block Size
1 Thread
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 100 R -RW 228787 1787 0.001 1.38 0.003 0.005 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 0 R -RW 4061 31.7 0.0 0.0 0.0 0.0 0.001 4.84 0.244 0.238
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 50 R -RW 7766 60.7 0.001 0.036 0.004 0.005 0.001 4.84 0.250 0.242
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 80 R -RW 18293 142.9 0.001 0.024 0.003 0.005 0.001 5.03 0.252 0.242
Sequential I/O
8K Block Size
1 Thread
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 100 S -RW 354277 2768 0.001 9.62 0.002 0.005 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 0 S -RW 3065 23.9 0.0 0.0 0.0 0.0 0.001 6.87 0.325 0.317
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 50 S -RW 6629 51.8 0.001 0.020 0.003 0.005 0.001 5.65 0.297 0.275
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 80 S -RW 16971 132.6 0.001 0.021 0.003 0.005 0.001 9.35 0.278 0.253
Random I/O
8K Block Size
16 Threads
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 100 R -RW 1501107 11727 0.001 40.0 0.003 0.005 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 0 R -RW 27052 211.3 0.0 0.0 0.0 0.0 0.001 8.38 0.589 0.490
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 50 R -RW 46707 364.9 0.001 22.9 0.027 0.005 0.001 7.00 0.653 0.581
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 80 R -RW 115231 900.2 0.001 10.4 0.012 0.005 0.001 9.63 0.635 0.565
Sequential I/O
8K Block Size
16 Threads
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 100 S -RW 3475273 27151 0.001 60.1 0.004 0.005 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 0 S -RW 25121 196.3 0.0 0.0 0.0 0.0 0.001 10.9 0.635 0.616
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 50 S -RW 52680 411.6 0.001 17.6 0.027 0.005 0.001 11.0 0.578 0.499
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 80 S -RW 123603 965.6 0.001 12.4 0.011 0.005 0.001 13.2 0.597 0.452
Random I/O
16K Block Size
1 Thread
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 100 R -RW 181688 2839 0.001 1.52 0.004 0.005 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 0 R -RW 3934 30.7 0.0 0.0 0.0 0.0 0.001 5.78 0.252 0.239
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 50 R -RW 7076 110.6 0.002 0.020 0.004 0.005 0.001 3.48 0.274 0.259
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 80 R -RW 16432 256.8 0.002 3.87 0.005 0.005 0.001 4.14 0.275 0.264
Sequential I/O
16K Block Size
1 Thread
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 100 S -RW 224488 3508 0.001 0.152 0.004 0.005 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 0 S -RW 3184 49.8 0.0 0.0 0.0 0.0 0.001 12.1 0.312 0.287
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 50 S -RW 6931 108.3 0.002 0.024 0.005 0.005 0.001 6.58 0.281 0.258
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
16K 1 0 80 S -RW 16945 264.8 0.002 0.294 0.004 0.005 0.001 4.58 0.274 0.256
Random I/O
1MB Block Size
1 Thread
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 100 R -RW 5741 5741 0.001 1.45 0.172 0.173 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 1 0 0 R -RW 3989 31.2 0.0 0.0 0.0 0.0 0.001 5.12 0.248 0.242
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 50 R -RW 722 722.0 0.044 0.213 0.175 0.175 1.38 8.22 2.52 2.50
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 80 R -RW 1532 1532 0.038 1.42 0.172 0.173 1.37 7.15 2.49 2.48
Sequential I/O
1MB Block Size
1 Thread
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 100 S -RW 5768 5768 0.001 1.39 0.173 0.173 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 0 S -RW 379 379.0 0.0 0.0 0.0 0.0 1.55 9.51 2.57 2.54
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 50 S -RW 741 741.0 0.153 0.317 0.190 0.179 1.57 8.72 2.44 2.42
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 1 0 80 S -RW 1555 1555 0.001 1.48 0.172 0.173 2.16 8.61 2.45 2.44
Random I/O
1MB Block Size
16 Threads
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 100 R -RW 80170 80170 0.001 105 0.197 0.195 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
8K 16 0 0 R -RW 27300 213.3 0.0 0.0 0.0 0.0 0.001 10.8 0.583 0.490
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 50 R -RW 1622 1622 0.039 263 0.779 0.209 3.37 207 18.8 16.0
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 80 R -RW 5137 5137 0.001 75.4 0.372 0.187 3.10 226 14.0 14.7
Sequential I/O
1MB Block Size
16 Threads
100% Read
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 100 S -RW 76222 76222 0.001 120 0.209 0.206 0.0 0.0 0.0 0.0
100% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 0 S -RW 1173 1173 0.0 0.0 0.0 0.0 3.50 3024 13.5 12.3
50% Read 50% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 50 S -RW 2168 2168 0.001 68.2 0.671 0.241 3.90 3019 14.0 13.3
80% Read 20% Write
BS Proc AIO read% IO Flag IO/s MB/s rMin-ms rMax-ms rAvg-ms WrAvg wMin-ms wMax-ms wAvg-ms WwAvg
1M 16 0 80 S -RW 5192 5192 0.001 45.9 0.396 0.201 3.44 2694 13.7 13.7