Couchbase Server
Performance Status
07/02/2014
Bug Snapshot
Last Wednesday:
Today:
KV
MB-11582: tmp_oom errors due to spike in memory usage during delta recovery
MB-11474: 50% regression in KV rebalance
MB-11405: ~2400% CPU consumption by memcached during ongoing workload with 5 buckets
MB-11347:
mem_used stat differs from memory usage reported by tcmalloc and OS
MB-11005:
Erlang memory in KV test case with 10 buckets is too high (up to 30GB, leading to OOM situation)
MB-10771:
Delta recovery is slower than full recovery. Meanwhile several performance issues encountered.
Views
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MB-11556: Rebalance "in" with views fails due to "unexpected_exit ... couch_set_view_group"
-
MB-11461:
2x regression in latency of stale=update_after queries
-
MB-11387:
Latency of stale=false queries easily reaches 1 minute and more (moderate workloads)
-
MB-11384:
Erlang memory usage in cases with views is 4x higher than in CBEE 2.5.1
-
MB-10273:
View compaction doesn't catch up in basic non-DGM tests with view queries
XDCR
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MB-11435: 1500-2000% CPU utilization by beam.smp on source nodes in XDCR scenarios (was ~500% in 2.5.x)
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MB-11434:
600-800% CPU utilization by memcached on source nodes in XDCR scenarios (was <100% in 2.5.x)
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MB-11382:
XDCR: default replicators per bucket is now 16 (earlier: 32)
n1ql
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MB-11141: SELECT COUNT(*) ... WHERE should avoid memcached operations
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MB-11140: SELECT DISTINCT scans all docs
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MB-11048: Range queries result in thousands of GET operations/sec
BACKLOG
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Couchbase Server 3.0 Beta
CBIT ZONE
-
CBIT-1182:
client machines for regression tests
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CBIT-1336: HW request for N1QL and secondary indexes performance testing
