Results apply for LightningChart Ultimate v.2.x and Pro v.1.x editions.
Data downsampling was not used in any chart. Downsampling feature takes only a small sub-set of data for visualization, which produces wrong and inaccurate rendering result. The benchmark is made to compare real rendering efficiency.
The benchmark was divided into two parts:
- Opening large data set and rendering it as a line graph
- Real-time monitoring as a scrolling line graph
The benchmarks were run with mid-performance class desktop computer at the date of the test. System information:
- Intel Core2 Quad Q8300 2.5GHz processor
- 4 GB RAM
- Ati Radeon HD 4650 512MB display adapter, 1920 x 1200 resolution through the test
- Windows Vista Ultimate 64-bit operating system.
Benchmark 1 – Rendering large data set
A big data file was generated, saved to disk, and opened as a value array. The array was passed to each chart, and rendering delay was measured. All charts were set to have an equal full-screen size and simplest possible appearance. The fastest rendering series types from each chart component were used to draw a line graph with a 1 pixel wide line, without points. The test was performed with various point amounts, to find a limit each chart can open without running out of memory or not having to wait over 10 minutes. Delays in 1 million points rendering were compared in the results.
Benchmark 2 – Real-time monitoring
As a result for each chart, a new point count adding capability / sec is searched, giving approx. 20 frames / second or better refresh rate. LightningChart is in its own performance class with 5 000 000 points/sec. Average point count capability of other charts is 220 points/sec.