We have build a 3 node cluster with 6 SSD in each node configure for ceph. After we have finish the configuration the read performance was very good (2 GB/s with low latency) but the write performance is very bad (200MB/s with a very high latency). I have checked everything but can`t find the issue. Network is a 20Gbit Bond (2*10Gbit) for ceph traffic with jumbo frames enabled. And there are no errors in the logs. Any idea somebody ?

What are you using to test the performance? Any tools? Settings? Applications? Inside a VM?

We have build a 3 node cluster with 6 SSD in each node configure for ceph. After we have finish the configuration the read performance was very good (2 GB/s with low latency) but the write performance is very bad (200MB/s with a very high latency). I have checked everything but can`t find the issue. Network is a 20Gbit Bond (2*10Gbit) for ceph traffic with jumbo frames enabled. And there are no errors in the logs. Any idea somebody ?

200MB/S with which block size ? iodepth ?