flame-analyzer 0.1.5

示例

将Flame图形保存到SVG可以通过以下基准测试完成

fromflame_analyzerimportFileFlamewithFileFlame('./file_flame_test.svg'):# Some expensive piece of code.[len(u.email)foruinUser.objects.all()]

或者直接转到IPython笔记本

也可以通过添加宽度kwarg来配置宽度

withFileFlame('./file_flame_test.svg',flame_width=1200,options={'title':'This is my test title'}):# some expensive piece of code[len(u.email)foruinUser.objects.all()]

扩展

默认情况下，IPython和Django都是可选的导入，这意味着您可以安装 并在终端中使用它来调试你的应用程序代码 安装。可以添加对其他数据库框架的支持，或者如果 希望通过创建自己的钩子钩住上下文enter/exit方法 例如，在输出火焰中添加你想要的类型

fromflame_analyzerimportInlineFlameclassCustomHook:"""
    Append the time taken to execute to the flame graphs title.
    """defbefore(self):self.called_before='< Called before code execution >'defafter(self):self.called_after='< Called after code execution >'defmodify_flame_options(self,flame_options):title=flame_options.get('title','')flame_options['title']=self.called_before+' --- '+self.called_afterreturnflame_optionsclassCustomInlineFlame(InlineFlame):hook_classes=(CustomHook,)withCustomInlineFlame(flame_width=500):total_email_length=0foruinUser.objects.all():total_email_length+=len(u.email)print(total_email_length)

输出IPython查看的图形

以下项目的学分：

• https://github.com/brendangregg/FlameGraph
• https://github.com/23andMe/djdt-flamegraph