Lustre 1.6 Operations Manual

19.3.4 PIOS Examples
To create a 1 GB load with a different number of threads:
In one file:
pios -t 1,2,4, 8,16, 32, 64, 128 -n 128 -c 1M -s 8M -o 8M \
--load=posixio -p /mnt/lustre
In multiple files:
pios -t 1,2,4, 8,16, 32, 64, 128 -n 128 -c 1M -s 8M -o 8M \
--load=posixio,fpp -p /mnt/lustre
To create a 1 GB load with a different number of chunksizes on ldiskfs with direct
I/O:
In one file:
pios -t 32 -n 128 -c 128K, 256K, 512K, 1M, 2M, 4M -s 8M -o 8M \
--load=directio -p /mnt/lustre
In multiple files:
pios -t 32 -n 128 -c 128K, 256K, 512K, 1M, 2M, 4M -s 8M -o 8M \
--load=directio,fpp -p /mnt/lustre
To create a 32 MB to 128 MB load with different RegionSizes on a Solaris zpool:
In one file:
pios -t 8 -n 16 -c 1M -A 2M -B 8M -C 100 -o 8M --load=posixio -p \
/myzpool/
In multiple files:
pios -t 8 -n 16 -c 1M -A 2M -B 8M -C 100 -o 8M --load=posixio, \
fpp -p /myzpool/
To read and verify timestamps:
Create a load with PIOS:
pios -t 40 -n 1024 -c 256K -s 4M -o 8M --load=posixio -p
/mnt/lustre
Keep the same parameters to read:
pios -t 40 -n 1024 -c 256K -s 4M -o 8M --load=posixio -p \
/mnt/lustre --verify
19-16 Lustre 1.6 Operations Manual • September 2008