Have been doing a lot of testing with a three node/2 osd setup - 3TB WD red drives (about 170MB/s write) - 2 * 1GB Ethernet Bonded dedicated to the network filesystem
With glusterfs, individual VMs were getting up to 70 MB/s write performance. Tests on the gluster mount gave 170 MB/s, the drive max. With Ceph - Journal+OSD on the same disk, I was getting truly dreadful performance, ranging from 3MB/s to 10MB/s. Also I noted that while gluster would maxout the net work bond at around 170 MB/s, ceph would never get any better than 50MB/s Obviously the first improvement that could be made is moving the journal to a separate SSD. Would it be ok to use spare space on the proxmox boot/swap/system SSD? or bad idea? :) thanks, -- Lindsay
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