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| #!/bin/bash | |
| set -ueo pipefail | |
| TEST_DIR=$1 | |
| echo "profiling disk mounted on" $TEST_DIR | |
| # Different size, single thread. | |
| max_chunk=4096 | |
| chunk=1 | |
| while (( chunk <= max_chunk )); do | |
| echo "--> randwrite ${chunk}K" | |
| sudo fio --name=disk_benchmark --directory=$TEST_DIR --numjobs=1 \ | |
| --size=10G --time_based --runtime=15s --ramp_time=2s --ioengine=psync \ | |
| --direct=1 --verify=0 --bs=${chunk}K --iodepth=1 --rw=randwrite \ | |
| --group_reporting=1 | |
| echo "--> randread ${chunk}K" | |
| sudo fio --name=disk_benchmark --directory=$TEST_DIR --numjobs=1 \ | |
| --size=10G --time_based --runtime=15s --ramp_time=2s --ioengine=psync \ | |
| --direct=1 --verify=0 --bs=${chunk}K --iodepth=1 --rw=randread \ | |
| --group_reporting=1 | |
| if (( chunk > 512 )); then | |
| chunk=$((chunk + 512)) | |
| else | |
| chunk=$((chunk * 2)) | |
| fi | |
| done | |
| # Userspace parallelism vs hardware parallelism. | |
| # careful, this requires at least 1TB space. | |
| min_chunk=8 # 8K | |
| max_chunk=16384 # 16M | |
| jobs=$((max_chunk / min_chunk)) | |
| chunk=$min_chunk | |
| while (( chunk <= max_chunk )); do | |
| echo "--> randwrite ${chunk}K*${jobs}threads" | |
| sudo fio --name=disk_benchmark --directory=$TEST_DIR --numjobs=$jobs \ | |
| --size=500M --time_based --runtime=30s --ramp_time=10s --ioengine=psync \ | |
| --direct=1 --verify=0 --bs=${chunk}K --iodepth=1 --rw=randwrite \ | |
| --group_reporting=1 | |
| echo "--> randread ${chunk}K*${jobs}threads" | |
| sudo fio --name=disk_benchmark --directory=$TEST_DIR --numjobs=$jobs \ | |
| --size=500M --time_based --runtime=30s --ramp_time=10s --ioengine=psync \ | |
| --direct=1 --verify=0 --bs=${chunk}K --iodepth=1 --rw=randread \ | |
| --group_reporting=1 | |
| chunk=$((chunk * 2)) | |
| jobs=$((jobs / 2)) | |
| done | |
| # Probe disk stripe. | |
| chunk=256 | |
| samples=16 | |
| stripe=$((chunk / samples)) | |
| if ((chunk < samples)); then | |
| samples=chunk | |
| stripe=1 | |
| fi | |
| for i in $(seq 1 $samples); do | |
| offset=$((stripe * i - stripe)) | |
| echo "--> randread ${chunk}K offset ${offset}K" | |
| sudo fio --name=disk_benchmark --directory=$TEST_DIR --numjobs=1 \ | |
| --size=10G --time_based --runtime=30s --ramp_time=2s --ioengine=psync \ | |
| --direct=1 --verify=0 --bs=${chunk}K --offset=${offset}K --iodepth=1 --rw=randread \ | |
| --group_reporting=1 | |
| done |
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