fio -ioengine=rbd -name=test -bs=4M -iodepth=32 -rw=randwrite -runtime=60 -pool=kube -rbdname=bench
WRITE: bw=89.6MiB/s (93.9MB/s), 89.6MiB/s-89.6MiB/s (93.9MB/s-93.9MB/s), io=5548MiB (5817MB), run=61935-61935msec
fio -ioengine=rbd -name=test -bs=4M -iodepth=32 -rw=randread -runtime=60 -pool=kube -rbdname=bench
READ: bw=139MiB/s (146MB/s), 139MiB/s-139MiB/s (146MB/s-146MB/s), io=8404MiB (8812MB), run=60443-60443msec
this is great. I don't get why I can't get the same in the mapped rbd.
Le vendredi 16 août 2019 à 21:04 +0300, vitalif@yourcmc.ru a écrit :
- libaio randwrite
- libaio randread
- libaio randwrite on mapped rbd
- libaio randread on mapped rbd
- rbd read
- rbd write
recheck RBD with RAND READ / RAND WRITE
you're again comparing RANDOM and NON-RANDOM I/O
your SSDs aren't that bad, 3000 single-thread iops isn't the worst
possible performance
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