Hi,
we're playing around with ceph but are not quite happy with the IOs.
3 node ceph / proxmox cluster with each:
LSI HBA 3008 controller
4 x MZILT960HAHQ/007 Samsung SSD
Transport protocol: SAS (SPL-3)
40G fibre Intel 520 Network controller on Unifi Switch
Ping roundtrip to partner node is 0.040ms average.
Transport protocol: SAS (SPL-3)
fio reports on a virtual machine with
--randrepeat=1 --ioengine=libaio --direct=1 --gtod_reduce=1 --name=test --filename=test --bs=4k --iodepth=64 --size=4G --readwrite=randrw --rwmixread=75
on average 5000 iops / write
on average 13000 iops / read
We're expecting more. :( any ideas or is that all we can expect?
money is not a problem for this test-bed, any ideas howto gain more IOS is greatly appreciated.
Thank you.
Stefan
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