Can you run it with 4k block size , 1 thread. ( Default is 4M and 16 threads)
$ rados bench -p rbd 10 write -b 4096 -t 1 --no-cleanup On 19/08/2021 04:22, 신희원 / 학생 / 컴퓨터공학부 wrote:
Hi, I measured the performance of ceph-osd and crimson-osd with same single core affinity. I checked IOPS, Latency by rados-bench write , and crimson-osd has lower performance than ceph-osd about 3 times. (ceph-osd(BlueStore): 228 IOPS, crimson-osd(AlienStore): 73 IOPS) -> " $ rados bench -p rbd 10 write --no-cleanup " Then, crimson-osd's CPU utilization is almost 100%. I think this is the reason of performance degradation.. Crimson-osd is known for lower CPU consumption than ceph-osd. I wonder why crimson-osd has more CPU usage in this experiment. Please let me know how to fix it, Shin ᐧ _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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