prometheus

Commit Graph

Author	SHA1	Message	Date
Bryan Boreham	b9a9689aae	[PERF] Chunk encoding: simplify writeByte Rather than append a zero then set the value at that position, append the value. Signed-off-by: Bryan Boreham <bjboreham@gmail.com>	1 year ago
Antoine Pultier	d90d0976b5	fix(bstream/writeByte): ensure it appends only one byte (#14854 ) fix(bstream/writeByte): ensure it appends only one byte Signed-off-by: Antoine Pultier <antoine.pultier@sintef.no>	1 year ago
Arve Knudsen	108a6bc9f6	tsdb/chunkenc.Pool: Refactor Get and Put Signed-off-by: Arve Knudsen <arve.knudsen@gmail.com>	2 years ago
George Krajcsovits	4eab18abd6	[nhcb branch] Use single bit to differentiate between optimized bounds and floats (#13828 ) * Use single bit to differentiate between optimized bounds and floats Use one bit to decide what kind of data to read/write. This reduces storage need of floats from 72 bits to 65 bits and makes the integers store in 5 to 32 bits instead of 16. Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com> Signed-off-by: György Krajcsovits <gyorgy.krajcsovits@grafana.com> Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com> Signed-off-by: George Krajcsovits <krajorama@users.noreply.github.com> Co-authored-by: Jeanette Tan <jeanette.tan@grafana.com>	2 years ago
zenador	4acbb7dea6	Add custom buckets to native histogram chunks encoding (#13706 ) * add custom bounds to chunks encoding * change custom buckets schema number * rename custom bounds to custom values Signed-off-by: Jeanette Tan <jeanette.tan@grafana.com>	2 years ago
Matthieu MOREL	fb3eb21230	enable gocritic, unconvert and unused linters Signed-off-by: Matthieu MOREL <matthieu.morel35@gmail.com>	3 years ago
Bryan Boreham	d166da7b59	tsdb: stop saving a copy of last 4 samples in memSeries (#11296 ) * TSDB chunks: remove race between writing and reading Because the data is stored as a bit-stream, the last byte in the stream could change if the stream is appended to after an Iterator is obtained. Copy the last byte when the Iterator is created, so we don't have to read it later. Clarify in comments that concurrent Iterator and Appender are allowed, but the chunk must not be modified while an Iterator is created. (This was already the case, in order to copy the bstream slice header.) * TSDB: stop saving last 4 samples in memSeries This extra copy of the last 4 samples was introduced to avoid a race condition between reading the last byte of the chunk and writing to it. But now we have fixed that by having `bstreamReader` copy the last byte, we don't need to copy the last 4 samples. This change saves 56 bytes per series, which is very worthwhile when you have millions or tens of millions of series. * TSDB: tidy up stopIterator re-use Previous changes have left this code duplicating some lines; pull them out to a separate function and tidy up. * TSDB head_test: stop checking when iterators are wrapped The behaviour has changed so chunk iterators are only wrapped when transaction isolation requires them to stop short of the end. This makes tests fail which are checking the type. Tests should check the observable behaviour, not the type. Signed-off-by: Bryan Boreham <bjboreham@gmail.com> Signed-off-by: Ganesh Vernekar <ganeshvern@gmail.com> Co-authored-by: Ganesh Vernekar <ganeshvern@gmail.com>	3 years ago
Dieter Plaetinck	d5bfbe3114	improve bstream comments and doc (#9560 ) * improve bstream comments and doc Signed-off-by: Dieter Plaetinck <dieter@grafana.com> * feedback Signed-off-by: Dieter Plaetinck <dieter@grafana.com>	4 years ago
jinglina	1a430e5f89	remove redundant parentheses (#9134 ) Signed-off-by: jinglina <jinglinax@163.com>	5 years ago
Marco Pracucci	3b529ddbce	Cleanup bstream_test.go based on post-merge feedback received on #7390 (#7413 ) * Fixed bstream test license Signed-off-by: Marco Pracucci <marco@pracucci.com> * Simplified bstreamReader.loadNextBuffer() Signed-off-by: Marco Pracucci <marco@pracucci.com> * Fixed date in license Signed-off-by: Marco Pracucci <marco@pracucci.com>	6 years ago
Marco Pracucci	f42ed03dc5	Optimized bstream reader used by XORChunk iterator (#7390 ) * Optimized bstream reader Signed-off-by: Marco Pracucci <marco@pracucci.com> * Fixed linter Signed-off-by: Marco Pracucci <marco@pracucci.com> * Added license to new file Signed-off-by: Marco Pracucci <marco@pracucci.com> * Fixed type cast Signed-off-by: Marco Pracucci <marco@pracucci.com> * Changed comments Signed-off-by: Marco Pracucci <marco@pracucci.com> * Improved comments and rolledback no-op changes Signed-off-by: Marco Pracucci <marco@pracucci.com> * Fixed race condition Signed-off-by: Marco Pracucci <marco@pracucci.com>	6 years ago
Ganesh Vernekar	7cf09b0395	Moving tsdb into its own subdirectory Signed-off-by: Ganesh Vernekar <cs15btech11018@iith.ac.in>	6 years ago
Simon Pasquier	597202ae43	Remove more unused code Signed-off-by: Simon Pasquier <spasquie@redhat.com>	7 years ago
Simon Pasquier	d5d7a097e1	Update Makefile.common This change also uses the latest staticcheck version which comes with new verifications, hence some clean up in the code. Signed-off-by: Simon Pasquier <spasquie@redhat.com>	7 years ago
Tom Wilkie	88ebd749dd	Make newBReader return a struct, not a pointer. (#459 ) This shows up as a hot spot in profiles of queries involving lots of seeks, as each seek creates a new iterator. Signed-off-by: Tom Wilkie <tom.wilkie@gmail.com>	7 years ago
Fabian Reinartz	67f0ca8f0e	Move index and chunk encoders to own packages	8 years ago
Julius Volz	0e2f8917ed	Also add original license info to bstream.go Plus, extend the messages a bit to mention the origin repo.	9 years ago
Julius Volz	8d1fb4fa01	Minor comment fixes and additions.	9 years ago
Fabian Reinartz	778103b450	Add liecence file and headers	9 years ago
Fabian Reinartz	8c48dc2ca5	chunks: varint encoding in first full 64bit numbers This saves about 7 bytes per chunk	9 years ago
Fabian Reinartz	5e76fd3126	chunks: drop shift, remove branch This removes the need for the shift value and just calculates everything on the fly through count. Removes a branch condition.	9 years ago
Fabian Reinartz	c9ee572709	chunks: don't mutate in bstream iterator This replaces mutation of underlying bytes in the iterated slice with a shift counter, which is used when reading the head byte. This is avoids having to copy the entire slice for every new iterator.	9 years ago
Fabian Reinartz	fa181a34c1	chunks: cleanup anything but xor encoding xor encoding is fast enough for our purposes and provides very good compression. We remove all other ones that partially don't support floats for the sake of simplicity.	9 years ago
Fabian Reinartz	e67cf768dc	chunks: remove intermeidate copy from xor chunk	9 years ago

10 Commits (bwplotka-patch-3)