fio cheatsheet

fio cheatsheet

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 Read Test
 fio --name=randread --ioengine=libaio --iodepth=16 --rw=randread --bs=4k --direct=0 --size=512M --numjobs=4 --runtime=240 --group_reporting
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writes a total 2GB files [4 jobs x 512 MB = 2GB] running 4 processes at a time:

fio --name=randwrite --ioengine=libaio --iodepth=1 --rw=randwrite --bs=4k --direct=0 --size=512M --numjobs=4 --runtime=240 --group_reporting
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 Read Write Performance Test
 fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=random_read_write.fio --bs=4k --iodepth=64 --size=4G --readwrite=randrw --rwmixread=75
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Sequential Reads – Async mode – 8K block size – Direct IO – 100% Reads

fio --name=seqread --rw=read --direct=1 --ioengine=libaio --bs=8k --numjobs=8 --size=1G --runtime=600  --group_reporting
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Sequential Writes – Async mode – 32K block size – Direct IO – 100% Writes

fio --name=seqwrite --rw=write --direct=1 --ioengine=libaio --bs=32k --numjobs=4 --size=2G --runtime=600 --group_reporting
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Random Reads – Async mode – 8K block size – Direct IO – 100% Reads

fio --name=randread --rw=randread --direct=1 --ioengine=libaio --bs=8k --numjobs=16 --size=1G --runtime=600 --group_reporting
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Random Writes – Async mode – 64K block size – Direct IO – 100% Writes

fio --name=randwrite --rw=randwrite --direct=1 --ioengine=libaio --bs=64k --numjobs=8 --size=512m --runtime=600 --group_reporting
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Random Read/Writes – Async mode – 16K block size – Direct IO – 90% Reads/10% Writes

fio --name=randrw --rw=randrw --direct=1 --ioengine=libaio --bs=16k --numjobs=8 --rwmixread=90 --size=1G --runtime=600 --group_reporting
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 creates 8 files (numjobs=8) each with size 512MB (size) at 64K block size (bs=64k) and will perform random read/write (rw=randrw) with the mixed workload of 70% reads and 30% writes. 
 The job will run for full 5 minutes (runtime=300 & time_based) even if the files were created and read/written.
 
 fio --name=randrw --ioengine=libaio --iodepth=1 --rw=randrw --bs=64k --direct=1 --size=512m --numjobs=8 --runtime=300 --group_reporting --time_based --rwmixread=70
 
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compare disk performance with a simple 3:1 4K read/write test
creates a 4 GB file and perform 4KB reads and writes using a 75%/25% split within the file, with 64 operations running at a time. The 3:1 ratio represents a typical database.

fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=4G --readwrite=randrw --rwmixread=75
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Random read performance

fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=4G --readwrite=randread
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Random write performance

fio --randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=4G --readwrite=randwrite
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