From 8c7222a7ce490db43612bdb05386f4813d32ea79 Mon Sep 17 00:00:00 2001
From: vicanso <vicansocanbico@gmail.com>
Date: Sun, 26 Dec 2021 16:09:42 +0800
Subject: [PATCH] docs: update documents

---
 README.md       | 15 ++++++++++++++-
 echarts_test.go | 24 +++++++++++++++++++++++-
 2 files changed, 37 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 6869529..3688cec 100644
--- a/README.md
+++ b/README.md
@@ -79,4 +79,17 @@ func main() {
   - `series.itemStyle.color` 该数据项展示时使用的颜色 
   - `series.data` 数据项对应的数据数组，支持以下形式的数据：
     - `数值` 常用形式，数组数据为浮点数组，如[1.1, 2,3, 5.2]
-    - `结构体` pie图表或bar图表中指定样式使用，如[{"value": 1048, "name": "Search Engine"},{"value": 735,"name": "Direct"}]
\ No newline at end of file
+    - `结构体` pie图表或bar图表中指定样式使用，如[{"value": 1048, "name": "Search Engine"},{"value": 735,"name": "Direct"}]
+
+## 性能
+
+简单的图表生成PNG在20ms左右，而SVG的性能则更快，足已满足大量图表的生成需求。
+
+```bash
+goos: darwin
+goarch: amd64
+pkg: github.com/vicanso/go-charts
+cpu: Intel(R) Core(TM) i5-8257U CPU @ 1.40GHz
+BenchmarkEChartsRenderPNG-8           60          17765045 ns/op         2492854 B/op       1007 allocs/op
+BenchmarkEChartsRenderSVG-8          282           4303042 ns/op        32622688 B/op       2983 allocs/op
+```
\ No newline at end of file
diff --git a/echarts_test.go b/echarts_test.go
index 9639ac1..0702591 100644
--- a/echarts_test.go
+++ b/echarts_test.go
@@ -398,7 +398,7 @@ func TestParseECharsOptions(t *testing.T) {
 	}, options)
 }
 
-func BenchmarkEChartsRender(b *testing.B) {
+func BenchmarkEChartsRenderPNG(b *testing.B) {
 	for i := 0; i < b.N; i++ {
 		_, err := RenderEChartsToPNG(`{
 			"title": {
@@ -419,3 +419,25 @@ func BenchmarkEChartsRender(b *testing.B) {
 		}
 	}
 }
+
+func BenchmarkEChartsRenderSVG(b *testing.B) {
+	for i := 0; i < b.N; i++ {
+		_, err := RenderEChartsToSVG(`{
+			"title": {
+				"text": "Line"
+			},
+			"xAxis": {
+				"type": "category",
+				"data": ["Mon", "Tue", "Wed", "Thu", "Fri", "Sat", "Sun"]
+			},
+			"series": [
+				{
+					"data": [150, 230, 224, 218, 135, 147, 260]
+				}
+			]
+		}`)
+		if err != nil {
+			panic(err)
+		}
+	}
+}