无需物理设备即可检查 Android 应用程序的速度？
我正在为 Android 编写游戏。我想定位尽可能多的设备。我知道 Droid 用户购买了大约 50% 的应用程序，其余的是 G1 和 HTC 设备的混合体。
到目前为止，我一直在模拟器中测试我的应用程序，以模拟 Droid 手机（我得到大约 40 fps）以及实际的 Droid 手机（我得到大约 60 fps）。
我想知道我的应用程序在 G1 等较慢的设备上运行的速度有多快。除了自己购买 G1 或请拥有 G1 的人帮我测试之外，还有其他方法可以做到这一点吗？
例如，有什么方法可以使用模拟器来大致了解它在 G1 上的运行情况吗？
I'm writing a game for Android. I'd like to target as many devices as possible. I'm aware that Droid owners buy about 50% of the apps and the rest are a mixture of G1 and HTC devices.
So far, I've been testing my app in the emulator set to model the Droid phone (where I get about 40 fps) as well as on an actual Droid phone (where I get about 60 fps).
I'd like to know how fast my app runs on slower devices such as the G1. Is there any way I can do this besides getting a G1 myself or asking people with G1s to test it for me?
For example, is there any way I can use the emulator to get a rough idea how well it will run on the G1?
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不是今天。
对于简单的“慢了 50%”的答案来说，变量太多。例如，DROID 具有浮点硬件 (FPU)，而 G1 则没有。如果您正在进行大量浮点计算，DROID 和 G1 之间的差异将大于相对 CPU 速度所显示的差异。
类似地，板载闪存、图形硬件加速等的访问速度可能在与 CPU 速度无关的方面有所不同。而且，不同的应用程序会以不同的方式使用这些功能——您的应用程序可能全部从 RAM 运行，而其他应用程序则不断从板载闪存加载（或者更糟糕的是从 SD 卡加载，其速度差异更大）。
从性能角度来看，模拟器与真实硬件几乎没有相似之处。例如，根本没有图形硬件加速。使用模拟器测试你的游戏是否运行是一回事；用它来衡量性能对我来说似乎毫无意义。哎呀，我无法让模拟器在四核 PC 上可靠地播放视频。
现在，如果有一个工具可以测量您的应用程序使用某些功能（例如，某些 OpenGL 操作）的程度，以及不同设备在执行这些操作时如何执行的数据库，您也许能够得出一个相当准确的答案。唉，据我所知，这些都不存在。也许有一天它会存在，得益于众包数据库之类的东西。
在此期间，您将不得不做游戏开发人员在硬件不同的其他平台（例如 Windows）上所做的事情 - 在几个实际配置上进行测试并制定一些“最低”和“推荐”硬件水平。
Not today.
There are too many variables for simple "it's 50% slower" answers. The DROID has floating-point hardware (FPU), and the G1 does not, for example. If you're doing lots of floating-point calculations, the disparity between the DROID and the G1 will be greater than the relative CPU speeds would indicate.
Similarly, access speeds for on-board flash, graphics hardware acceleration, and the like may all differ in ways that aren't tied to CPU speed. And, different apps will use those capabilities differently -- your app might run all from RAM while others are constantly loading from on-board flash (or, worse, from the SD card, which speeds vary even more widely).
The emulator bears little resemblance to real hardware from a performance standpoint. For example, there is no graphics hardware acceleration at all. Using the emulator to test whether your game works is one thing; using it to benchmark performance seems pointless to me. Heck, I can't get the emulator to play back video reliably on a quad-core PC.
Now, given a tool that can measure how much your app uses certain capabilities (e.g., certain OpenGL operations), and a database of how different devices perform when doing those things, you might be able to cook up a reasonably accurate answer. Alas, none of that exists, AFAIK. Perhaps someday it will exist, courtesy of a crowdsourced database or something.
In the interim, you are going to wind up having to do what game developers do on other platforms where the hardware varies (e.g., Windows) -- test on a couple of actual configurations and draw up some "minimum" and "recommended" hardware levels.
您是否查看过Device Anywhere？
Have you looked at Device Anywhere?