21327191762
85%

Ran 25 Jan 2026 06:02AM UTC

Jobs 1

Files 61

Run time 1min

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Committed 23 Jan 2026 03:26PM UTC coverage: 84.723% (+0.2%) from 84.562%

Build # 21327191762

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

74404 of 87820 relevant lines covered (84.72%)

326470.47 hits per line

Uncovered Existing Lines

Lines	Coverage	∆	File
1	82.87	0.25%	src/github.com/nats-io/nats-server/server/memstore.go
2	86.16	-0.05%	src/github.com/nats-io/nats-server/server/events.go
2	93.66	3.15%	src/github.com/nats-io/nats-server/server/route.go
3	94.35	0.59%	src/github.com/nats-io/nats-server/server/client.go
3	87.11	-0.11%	src/github.com/nats-io/nats-server/server/monitor.go
4	93.76	-0.16%	src/github.com/nats-io/nats-server/server/gateway.go
4	73.71	-0.03%	src/github.com/nats-io/nats-server/server/jetstream_api.go
4	83.63	-0.19%	src/github.com/nats-io/nats-server/server/jetstream.go
5	88.6	0.26%	src/github.com/nats-io/nats-server/server/consumer.go
5	79.39	-0.06%	src/github.com/nats-io/nats-server/server/opts.go
8	87.32	0.48%	src/github.com/nats-io/nats-server/server/raft.go
58	81.95	-0.55%	src/github.com/nats-io/nats-server/server/jetstream_cluster.go

Jobs

ID	Job ID	Ran	Files	Coverage
1	21327191762.1	25 Jan 2026 06:02AM UTC	61	84.72	GitHub Action Run

nats-io / nats-server / 21327191762
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nats-io / nats-server / 21327191762 85%

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