Aliaksandr Valialkin
412f872597
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 00:08:32 +01:00
Fuchun Zhang
e6bad5174f
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 00:05:04 +01:00
Aliaksandr Valialkin
c1f81f08d4
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 12:13:15 +03:00
Aliaksandr Valialkin
175466bb41
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 18:53:41 +02:00
Aliaksandr Valialkin
fdf9de98f8
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 14:42:15 +02:00
Aliaksandr Valialkin
d448e07546
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 14:52:59 +03:00
Aliaksandr Valialkin
604e8f6114
lib/decimal: optimize maxUpExponent() by eliminating division from hot path
2020-09-19 13:49:43 +03:00
Aliaksandr Valialkin
778ea183ca
lib/decimal: properly store Inf values
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/752
2020-09-18 19:08:53 +03:00
Roman Khavronenko
4b89da9463
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 17:22:40 +03:00
Aliaksandr Valialkin
a3f48e395e
app/vmagent: add -remoteWrite.decimalPlaces command-line flag, which may be used for reducing disk space usage on the remote storage
2020-07-21 21:55:42 +03:00
Aliaksandr Valialkin
d24fc87a6f
lib/decimal: calculate ln2/ln10 constant during compile time
2019-11-23 15:52:39 +02:00
Aliaksandr Valialkin
3d1f4408cf
lib/decimal: increase decimal->float speed conversion for integer numbers
2019-11-20 14:09:10 +02:00
Aliaksandr Valialkin
f1f2eff08f
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 23:34:41 +02:00
Aliaksandr Valialkin
5d439cc6f2
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 16:46:08 +02:00
Aliaksandr Valialkin
22030b558f
lib/decimal: speed up FromFloat for common case with integers
2019-10-31 13:25:09 +02:00
Aliaksandr Valialkin
6510258a80
lib/decimal: increase float64->decimal conversion precision a bit
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Updates https://github.com/VictoriaMetrics/VictoriaMetrics/issues/213
2019-10-30 02:04:28 +02:00
Aliaksandr Valialkin
eb513e7ba3
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 13:23:54 +02:00
Aliaksandr Valialkin
820cdae88d
lib/decimal: add a comment explaining weird code in maxUpExponent. Fixes #29
2019-05-23 17:18:50 +03:00
Aliaksandr Valialkin
1836c415e6
all: open-sourcing single-node version
2019-05-23 00:18:06 +03:00
