* Support stale samples for sparse histograms
Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
* Don't cut a new chunk for every stale sample
Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
* Update comments for HistoAppender.Appendable
Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
* Fix review comments
Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
* Remove query hacks in the API and fix metrics
Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
* Tests for the metrics
Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
* Better way to count series on restart
Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
* Fix `kuma_sd` targetgroup reporting (#9157)
* Bundle all xDS targets into a single group
Signed-off-by: austin ce <austin.cawley@gmail.com>
* Snapshot in-memory chunks on shutdown for faster restarts (#7229)
Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com>
* Rename links
Signed-off-by: Levi Harrison <git@leviharrison.dev>
* Remove Individual Data Type Caps in Per-shard Buffering for Remote Write (#8921)
* Moved everything to nPending buffer
Signed-off-by: Levi Harrison <git@leviharrison.dev>
* Simplify exemplar capacity addition
Signed-off-by: Levi Harrison <git@leviharrison.dev>
* Added pre-allocation
Signed-off-by: Levi Harrison <git@leviharrison.dev>
* Don't allocate if not sending exemplars
Signed-off-by: Levi Harrison <git@leviharrison.dev>
* Avoid deadlock when processing duplicate series record (#9170)
* Avoid deadlock when processing duplicate series record
`processWALSamples()` needs to be able to send on its output channel
before it can read the input channel, so reads to allow this in case the
output channel is full.
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* processWALSamples: update comment
Previous text seems to relate to an earlier implementation.
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* Optimise WAL loading by removing extra map and caching min-time (#9160)
* BenchmarkLoadWAL: close WAL after use
So that goroutines are stopped and resources released
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* BenchmarkLoadWAL: make series IDs co-prime with #workers
Series are distributed across workers by taking the modulus of the
ID with the number of workers, so multiples of 100 are a poor choice.
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* BenchmarkLoadWAL: simulate mmapped chunks
Real Prometheus cuts chunks every 120 samples, then skips those samples
when re-reading the WAL. Simulate this by creating a single mapped chunk
for each series, since the max time is all the reader looks at.
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* Fix comment
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* Remove series map from processWALSamples()
The locks that is commented to reduce contention in are now sharded
32,000 ways, so won't be contended. Removing the map saves memory and
goes just as fast.
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* loadWAL: Cache the last mmapped chunk time
So we can skip calling append() for samples it will reject.
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* Improvements from code review
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* Full stops and capitals on comments
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* Cache max time in both places mmappedChunks is updated
Including refactor to extract function `setMMappedChunks`, to reduce
code duplication.
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* Update head min/max time when mmapped chunks added
This ensures we have the correct values if no WAL samples are added for
that series.
Note that `mSeries.maxTime()` was always `math.MinInt64` before, since
that function doesn't consider mmapped chunks.
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* Split Go and React Tests (#8897)
* Added go-ci and react-ci
Co-authored-by: Julien Pivotto <roidelapluie@inuits.eu>
Signed-off-by: Levi Harrison <git@leviharrison.dev>
* Remove search keymap from new expression editor (#9184)
Signed-off-by: Julius Volz <julius.volz@gmail.com>
Co-authored-by: Austin Cawley-Edwards <austin.cawley@gmail.com>
Co-authored-by: Levi Harrison <git@leviharrison.dev>
Co-authored-by: Julien Pivotto <roidelapluie@inuits.eu>
Co-authored-by: Bryan Boreham <bjboreham@gmail.com>
Co-authored-by: Julius Volz <julius.volz@gmail.com>
* optimize Linode SD by polling for event changes during refresh
Most accounts are fairly "static", in the sense that they're not cycling
through instances constantly. So rather than do a full refresh every
interval and potentially make several behind-the-scenes paginated API
calls, this will now poll the `/account/events/` endpoint every minute
with a list of events that we care about. If a matching event is found,
we then do a full refresh.
Co-authored-by: William Smith <wsmith@linode.com>
Signed-off-by: TJ Hoplock <t.hoplock@gmail.com>
Signed-off-by: William Smith <wsmith@linode.com>
I was struggling to understand the purpose of this method until I
tweaked the tests, so I decided to write down my observations.
Signed-off-by: Oleg Zaytsev <mail@olegzaytsev.com>
* Refactor: pass segment-reading function as param
To allow a different implementation to be used when garbage-collecting.
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* remote_write: reduce blocking from GC of series
Add a method `UpdateSeriesSegment()` which is used together with
`SeriesReset()` to garbage-collect old series. This allows us to
split the lock around queueManager series data and avoid blocking
`Append()` while reading series from the last checkpoint.
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* Cosmetic: review feedback on comments
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* remote-write benchmark: include GC of series
Reduce the total number of samples per iteration from 5000*5000
(25 million) which is too big for my laptop, to 1*10000.
Extend `createTimeseries()` to add additional labels, so that the
queue manager is doing more realistic work.
Move the Append() call to a background goroutine - this works because
TestWriteClient uses a WaitGroup to signal completion.
Call `StoreSeries()` and `SeriesReset()` while adding samples, to
simulate the garbage-collection that wal.Watcher does.
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* Change BenchmarkSampleDelivery to call UpdateSeriesSegment
This matches what Watcher.garbageCollectSeries() is doing now
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* tsdb: use dennwc/varint to speed up decoding
This is a tiny library, MIT-licensed, which unrolls the loop to go
about twice as fast.
Needed to copy the sign-inverting logic inline, previously provided by
the `binary` package.
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
* More comments to explain varint decoding
Signed-off-by: Bryan Boreham <bjboreham@gmail.com>
