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FIO
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| # Test job that demonstrates how to use the latency target | |
| # profiling. Fio will find the queue depth between 1..128 | |
| # that fits within the latency constraints of this 4k random | |
| # read workload. | |
| [global] | |
| bs=4k | |
| rw=randrw | |
| random_generator=lfsr | |
| direct=1 | |
| ioengine=libaio | |
| iodepth=128 | |
| # Set max acceptable latency to 500msec | |
| latency_target=500000 | |
| # profile over a 5s window | |
| latency_window=5000000 | |
| # 99.9% of IOs must be below the target | |
| latency_percentile=99.9 | |
| size=1024m | |
| [device] | |
| filename=<location of the director> |
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