21309443736
85%

Ran 24 Jan 2026 05:54AM UTC

Jobs 1

Files 61

Run time 1min

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Committed 23 Jan 2026 03:26PM UTC coverage: 84.562% (-0.1%) from 84.674%

Build # 21309443736

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

74262 of 87820 relevant lines covered (84.56%)

359193.88 hits per line

Uncovered Existing Lines

Lines	Coverage	∆	File
2	93.92	0.08%	src/github.com/nats-io/nats-server/server/gateway.go
2	63.16	-10.53%	src/github.com/nats-io/nats-server/server/jetstream_events.go
2	90.16	-0.08%	src/github.com/nats-io/nats-server/server/leafnode.go
2	79.45	0.04%	src/github.com/nats-io/nats-server/server/opts.go
2	89.98	-0.06%	src/github.com/nats-io/nats-server/server/server.go
2	91.17	-0.17%	src/github.com/nats-io/nats-server/server/sublist.go
3	87.88	-0.24%	src/github.com/nats-io/nats-server/server/auth.go
3	85.25	-1.38%	src/github.com/nats-io/nats-server/server/util.go
4	82.61	-0.2%	src/github.com/nats-io/nats-server/server/memstore.go
6	86.21	-0.19%	src/github.com/nats-io/nats-server/server/events.go
9	86.91	-0.26%	src/github.com/nats-io/nats-server/server/accounts.go
11	86.04	-0.19%	src/github.com/nats-io/nats-server/server/stream.go
12	93.76	-0.23%	src/github.com/nats-io/nats-server/server/client.go
20	88.98	-1.12%	src/github.com/nats-io/nats-server/server/reload.go
21	82.5	-0.02%	src/github.com/nats-io/nats-server/server/jetstream_cluster.go
26	73.74	-0.5%	src/github.com/nats-io/nats-server/server/jetstream_api.go
37	86.84	-0.72%	src/github.com/nats-io/nats-server/server/raft.go
57	90.51	-1.99%	src/github.com/nats-io/nats-server/server/route.go
60	88.34	0.14%	src/github.com/nats-io/nats-server/server/consumer.go
1074	82.95	0.62%	src/github.com/nats-io/nats-server/server/filestore.go

Jobs

ID	Job ID	Ran	Files	Coverage
1	21309443736.1	24 Jan 2026 05:54AM UTC	61	84.56	GitHub Action Run

nats-io / nats-server / 21309443736
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