WebJul 23, 2024 · Sorry to bump this old issue, but we are seeing the same issue. rand_write_4k performance is around 2-3 MB/s, rand_read_4 17MB/s. When we create a large file (5G) and mount it as loop device, format it and then run tests in this large file, we are seeing HUGE speedups. rand_read_4k jumps to 350 MB/s and rand_write_4k to … Web10.1. Access. The performance counters are available through a socket interface for the Ceph Monitors and the OSDs. The socket file for each respective daemon is located under /var/run/ceph, by default. The performance counters are grouped together into collection names. These collections names represent a subsystem or an instance of a subsystem.
Research on Performance Tuning of HDD-based Ceph* Cluster
WebMay 20, 2024 · The ceph_cluster pool should definitley have more PGs. I recommend that you do set the target_ratios to let the autoscaler know where you are headed. ceph_cluster will most likely end up with over 90% if the current situation will not change a lot in regards to how much data the cephfs pools hold. Best regards, Aaron. WebSee Logging and Debugging for details to ensure that Ceph performs adequately under high logging volume. ... virtual machines and other applications that write data to Ceph … city planner dnd
Chapter 7. Ceph performance benchmark - Red Hat Customer Portal
WebJun 21, 2024 · That is a write latency of 0,73 milliseconds for a 4K block being written to 3 nodes at the same time. This includes all the replication. So, including the block that has … WebApr 15, 2024 · The Ceph Dashboard’s Block tab now includes a new Overall Performance sub-tab which displays an embedded Grafana dashboard of high-level RBD metrics. … Webbiolatency summarizes the latency in block device I/O (disk I/O) in histogram. This allows the distribution to be studied, including two modes for device cache hits and for cache misses, and latency outliers. biosnoop is a basic block I/O tracing tool for displaying each I/O event along with the issuing process ID, and the I/O latency. Using this tool, you can … city planner exam 1112