21346810646
85%

Ran 26 Jan 2026 06:04AM UTC

Jobs 1

Files 61

Run time 1min

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Committed 23 Jan 2026 03:26PM UTC coverage: 84.607% (-0.1%) from 84.723%

Build # 21346810646

Build Type

push

github

Committed by

web-flow

Commit Message

Perform `_writeFullState` under read lock only (#7759)

Previously the `_writeFullState` calls would take the store write lock,
but if the store is very read-heavy with e.g. lots of consumers, this
creates a significant contention on those trying to acquire `RLock` and
results in pauses that may cause caches to expire. Therefore:

- A new `wfsmu` is added to allow only one of these calls to run at a
time — it protects the average delete map length field, and also means
that we can't have two `_writeFullState` goroutines writing to the same
file at the same time;
- The `fs.mu` is now `RLock` instead of `Lock`

Signed-off-by: Neil Twigg <neil@nats.io>

Run Details

74302 of 87820 relevant lines covered (84.61%)

347436.24 hits per line

Uncovered Existing Lines

Lines	Coverage	∆	File
2	87.11	0.0%	src/github.com/nats-io/nats-server/server/monitor.go
2	90.96	-0.19%	src/github.com/nats-io/nats-server/server/parser.go
2	90.11	-0.11%	src/github.com/nats-io/nats-server/server/reload.go
4	73.96	0.25%	src/github.com/nats-io/nats-server/server/jetstream_api.go
10	85.95	-0.17%	src/github.com/nats-io/nats-server/server/stream.go
13	82.06	0.11%	src/github.com/nats-io/nats-server/server/jetstream_cluster.go
16	79.18	-0.21%	src/github.com/nats-io/nats-server/server/opts.go
17	90.1	-0.46%	src/github.com/nats-io/nats-server/server/server.go
22	88.54	-0.06%	src/github.com/nats-io/nats-server/server/consumer.go
26	92.79	-0.88%	src/github.com/nats-io/nats-server/server/route.go
28	93.86	-0.49%	src/github.com/nats-io/nats-server/server/client.go
30	87.29	-0.03%	src/github.com/nats-io/nats-server/server/raft.go
67	82.36	-0.66%	src/github.com/nats-io/nats-server/server/filestore.go

Jobs

ID	Job ID	Ran	Files	Coverage
1	21346810646.1	26 Jan 2026 06:04AM UTC	61	84.61	GitHub Action Run

nats-io / nats-server / 21346810646
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