哪些服务可用于监控前端性能？
已经有很多用于跟踪服务器响应时间的托管服务，但我们正在寻找一些东西来跟踪页面渲染/加载时间（即浏览器渲染器）。
There are already plenty of hosted services for tracking server response times but we're looking for something to track page render/load times (i.e. browser renderer).
The problem with PageSpeed, YSlow, etc is they're on request where we want something that runs constantly and takes a reading every 15 mins for example.
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最新的浏览器有一个 window.performance.timing 属性，其中包含某些事件发生的时间戳（例如domainLookupStart、domLoading、domInteractive，...）。
您可能想要将这些数字的样本发送到您的服务器。
请参阅 https://developer.mozilla.org/en/API/navigationTiming
Google Analytics（分析） 页面速度指标，你可能也想看看。
Latest browsers have a window.performance.timing property which contains the timestamp at which some events occurred (such as domainLookupStart, domLoading, domInteractive, ...).
You may want to send a sample of those numbers to your servers.
See https://developer.mozilla.org/en/API/navigationTiming
Google Analytics has a page speed metric, you may want to look at it too.
Atatus 监视页面加载时间，从而进行真实用户监视 (RUM)，并且还监视 JavaScript 错误捕获导致错误的所有用户操作。
它还提供了跨地理位置和浏览器的性能表现的各种视图。
https://www.atatus.com/
https://www.atatus.com/blog/announcing-real-user-monitoring/
免责声明：我是一名 Web 开发人员在阿塔图斯。
Atatus monitors page load time and there by does Real User Monitoring (RUM), and also it monitors for JavaScript errors along with capturing all the user actions that lead to the error.
It also gives various views of how your performance is across geographical locations and browsers.
https://www.atatus.com/
https://www.atatus.com/blog/announcing-real-user-monitoring/
Disclaimer: I’m a web developer at Atatus.
我们使用 GTmetrix 获取每日页面速度和 YSlow 分数。如果您需要更高的频率，您可以使用 Selenium 或 ShowSlow。
We use GTmetrix to get daily Page Speed and YSlow scores. If you need a higher frequency, you can automate YSlow or Page Speed using Selenium or ShowSlow.
尝试像 dynaTrace 的 AJAX Edition 3 这样的免费工具。在网站上：“加快页面加载时间、优化渲染、调整 DOM 执行并与竞争对手进行比较。甚至与 Selenium、Watir 或 QTP 集成以开始自动化性能测试。它是免费的，这很简单，现在 Firefox 和 IE 都可以使用。”
我在 dynaTrace 工作，完全公开。但这个简单、免费的工具应该对您非常有用。
最佳
全科医生
Try a free tool like dynaTrace's AJAX Edition 3. From the website: "Speed your page load times, optimize rendering, tune DOM execution, and compare to competition. Even integrate with Selenium, Watir or QTP to begin automating your performance tests. It's free, it's easy and it's now for both Firefox and IE."
I do work for dynaTrace, in full disclosure. But this simple, free tool should be very useful to you.
Best
GP