Couchbase Server

Performance Status

Last Wednesday:

Today:

MB-11738: Evaluate GIO CPU utilization on systems with 16 vCPU

MB-11732: Auto-compaction doesn't honor fragmentation threshold

MB-11731: Drain rate suffers from slow [and serial] compaction

MB-11729: CPU utilization by memcached suddenly increases (~2-3x) after couple hours, IO operations affected

MB-11675: 40-50% performance degradation on append-heavy workload compared to 2.5.1

MB-11642: Intra-replication falling far behind under moderate-heavy workload

MB-11661: mem_used in increasing and dropping in basic setup with 5 buckets

MB-11582: tmp_oom errors due to spike in memory usage during delta recovery

MB-11405: ~2400% CPU consumption by memcached during ongoing workload with 5 buckets

MB-11728: Improve stale=update_after query latency
MB-11715: Rebalance after failover with views is slow (>6h), couch_view_group_cleanup crashes

MB-10273: View compaction should be triggered predictably, especially with parallel compaction enabled

MB-11714: 3x regression in XDCR replication latency (LAN)
MB-11643: Incoming workload suffers when XDCR enabled
MB-11435: 1500-2000% CPU utilization by beam.smp on source nodes in XDCR scenarios (was ~500% in 2.5.x)
MB-11434: 600-800% CPU utilization by memcached on source nodes in XDCR scenarios (was <100% in 2.5.x)
MB-11382: XDCR: default replicators per bucket is now 16 (earlier: 32)