Aliaksandr Valialkin
590160ddbb
lib/slicesutil: add helper functions for setting slice length and extending its capacity
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The added helper functions - SetLength() and ExtendCapacity() - replace error-prone code with simple function calls.
2024-05-12 11:32:17 +02:00
Aliaksandr Valialkin
7e1dd8ab9d
lib: consistently use atomic.* types instead of atomic.* functions
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See ea9e2b19a5
2024-02-24 02:07:53 +02:00
Aliaksandr Valialkin
0ed291102d
lib/decimal: follow-up for e6bad5174f
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- Add a benchmark for CalbirateAndScale.
- Reduce the decimal multipliers table size from 256Kb to 192bytes.
- Use more clear naming for variables.
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/pull/5672
2024-01-27 00:08:57 +01:00
Fuchun Zhang
64780f4f02
Optimize the performance of data merge: decimal.CalibrateScale() ( #5672 )
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* Optimize the performance of data merge: decimal.CalibrateScale() from 49633 ns/op to 9146 ns/op
* Optimize the performance of data merge: decimal.CalibrateScale()
2024-01-27 00:08:56 +01:00
Aliaksandr Valialkin
a11dc6689a
lib/decimal: use consistent randomizer in tests
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/3683
2023-01-23 19:23:39 -08:00
Aliaksandr Valialkin
1952ab99aa
all: fix build issues and tests for Apple M1
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1653
2021-10-27 15:06:34 +03:00
Aliaksandr Valialkin
4401464c22
all: add support for Prometheus staleness markers
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1526
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/748
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1509
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1530
Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/845
2021-08-13 12:10:17 +03:00
Aliaksandr Valialkin
1187ee5e16
lib/decimal: prevent exponent overflow when processing values close to zero
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See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/1114
2021-03-05 18:52:47 +02:00
Aliaksandr Valialkin
b2aa80e74b
app/vmagent: add -remoteWrite.roundDigits command-line option for limiting the number of digits after the point for stored values
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This commit also adds --vm-round-digits command-line option to vmctl tool.
2021-02-01 14:27:09 +02:00
Aliaksandr Valialkin
47db9bb24a
lib/decimal: add tests for negative values passed to maxUpExponent
2020-10-05 14:56:45 +03:00
Aliaksandr Valialkin
bc7d67cee2
lib/decimal: properly calibrate scale for blocks with Inf values
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See https://github.com/VictoriaMetrics/VictoriaMetrics/issues/805
2020-10-05 14:52:44 +03:00
Aliaksandr Valialkin
3e8569f456
lib/decimal: optimize maxUpExponent() by eliminating division from hot path
2020-09-19 13:50:09 +03:00
Aliaksandr Valialkin
26115891db
lib/decimal: properly store Inf values
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/752
2020-09-18 19:07:07 +03:00
Roman Khavronenko
f5f59896ec
lib/decimal: rename significant decimal digits to significant figures ( #698 )
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The previous notion was inconsistent with what `decimal.Round` does.
According to [wiki](https://en.wikipedia.org/wiki/Significant_figures ) rounding
applied to all significant figures, not just decimal ones.
2020-08-16 17:21:35 +03:00
Aliaksandr Valialkin
31ae5911a8
app/vmagent: add -remoteWrite.decimalPlaces command-line flag, which may be used for reducing disk space usage on the remote storage
2020-07-21 21:55:32 +03:00
Aliaksandr Valialkin
303905cd84
lib/{encoding,decimal}: typo fixes in tests: epxecting->expecting
2020-04-28 00:01:55 +03:00
Aliaksandr Valialkin
5285acae3e
lib/decimal: calculate ln2/ln10 constant during compile time
2019-11-23 15:52:58 +02:00
Aliaksandr Valialkin
52d7ca6bf0
lib/decimal: increase decimal->float speed conversion for integer numbers
2019-11-20 13:04:34 +02:00
Aliaksandr Valialkin
75eeea21ee
lib/decimal: reduce rounding error when converting from decimal to float with negative exponent
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While at it, slightly increase the conversion performance by moving fast path to the top of the loop.
2019-11-19 23:35:33 +02:00
Aliaksandr Valialkin
55d728c849
lib/{decimal,encoding}: optimize float64<->decimal conversion for arrays with zeros or ones
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Time series with only zeros or ones frequently occur in monitoring, so it is worth optimizing their handling.
2019-11-01 16:48:12 +02:00
Aliaksandr Valialkin
808fc0971f
lib/{encoding,decimal}: add benchmarks for blocks containing zeros or ones
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Time series with such values are quite common in monitoring space,
so it would be great to have benchmarks for them.
2019-11-01 16:48:12 +02:00
Aliaksandr Valialkin
e76e21e4c7
lib/decimal: speed up FromFloat for common case with integers
2019-10-31 13:24:59 +02:00
Aliaksandr Valialkin
cfa5e279c2
lib/decimal: increase float64->decimal conversion precision a bit
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/213
2019-10-30 02:04:56 +02:00
Aliaksandr Valialkin
a42b5db39f
lib/decimal: increase float->decimal conversion precision for big numbers
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/213
2019-10-28 13:23:44 +02:00
Aliaksandr Valialkin
10caad4728
lib/decimal: modernize tests a bit
2019-07-31 21:10:03 +03:00
Aliaksandr Valialkin
674888fdc9
lib/decimal: add a comment explaining weird code in maxUpExponent. Fixes #29
2019-05-23 17:18:35 +03:00
Aliaksandr Valialkin
1836c415e6
all: open-sourcing single-node version
2019-05-23 00:18:06 +03:00
