> Hi all, > > My Ceph setup: > - 12 OSD nodes, 4 OSD nodes per rack. Replication of 3, 1 replica per rack. > - 20 spinning SAS disks per node. Don't use legacy HDDs if you care about performance. > - Some nodes have 256GB RAM, some nodes 128GB. 128GB is on the low side for 20 OSDs. > - CPU varies between Intel E5-2650 and Intel Gold 5317. E5-2650 is underpowered for 20 OSDs. 5317 isn't the ideal fit, it'd make a decent MDS system but assuming a dual socket system, you have ~2 threads per OSD, which is maybe acceptable for HDDs, but I assume you have mon/mgr/rgw on some of them too. > - Each node has 10Gbit/s network. > > Using rados bench I am getting decent results (depending on block size): > - 1000 MB/s throughput, 1000 IOps with 1MB block size > - 30 MB/s throughput, 7500 IOps with 4K block size rados bench is a useful for smoke testing but not always a reflection of E2E experience. > > Unfortunately not getting the same performance with Rados Gateway (S3). > > - 1x HAProxy with 3 backend RGW's. Run an RGW on every node. > I am using Minio Warp for benchmarking (PUT). I am 1 Warp server and 5 Warp clients. Benchmarking towards the HAProxy. > > Results: > - Using 10MB object size, I am hitting the 10Gbit/s link of the HAProxy server. Thats good. > - Using 500K object size, I am getting a throughput of 70 up to 150 MB/s with 140 up to 300 obj/s. Tiny objects are the devil of any object storage deployment. The HDDs are killing you here, especially for the index pool. You might get a bit better by upping pg_num from the party line. You might also disable Nagle on the RGW nodes. > It depends on the concurrency setting of Warp. > > It look likes the objects/s is the bottleneck, not the throughput. > > Max memory usage is about 80-90GB per node. CPU's are quite idling. > > Is it reasonable to expect more IOps / objects/s for RGW with my setup? At this moment I am not able to find the bottleneck what is causing the low obj/s. HDDs are a false economy. > > Ceph version is 15.2. > > Thanks! > _______________________________________________ > ceph-users mailing list -- ceph-users@xxxxxxx > To unsubscribe send an email to ceph-users-leave@xxxxxxx _______________________________________________ ceph-users mailing list -- ceph-users@xxxxxxx To unsubscribe send an email to ceph-users-leave@xxxxxxx
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