Good morning everybody! Guys, I have 9x Kingston DC600M/1920 SSDs (SATA) in 3x DL380e, using the P420 (I still don't have an HBA to perform the exchange) in RAID 0. The device's specifications indicate that it achieves 94k/78k RAND-RW IOPS at 4K.
I'm using it exclusively for VMs with RBD (I'm using OpenStack). (pool size 3) Performing sequential testing directly on the device I can easily beat these rates, but with random tests I reach fixed rates of 15k, and I think the device just doesn't deliver that. On VMs I get rates of 20k randwrite. What I've already tried: Disable Controller Cache Enable HP Smart Path (it ended up worsening SSD performance) Change the scheduler to "none" I haven't tried putting the controller in HBA mode yet, as the boot disks are on the P420, I still have to align this issue to perform the test. I would like to know if I can improve these rates or if it is just that. Thanks in advance! _______________________________________________ ceph-users mailing list -- ceph-users@ceph.io To unsubscribe send an email to ceph-users-le...@ceph.io
