如何在不超过微小配额的情况下在Google App Engine上使用Java？

Question

doGet()servlet中的一个非常简单的java代码在GAE上获得超过一秒的cpu时间.我已经阅读了一些与配额相关的文档,显然我没有做错任何事.

//Request the user Agent info
String userAgent = req.getHeader("User-Agent");

我想知道最多使用CPU的是什么,我使用谷歌帮助推荐.

    //The two lines below will get the CPU before requesting User-Agent Information
    QuotaService qs = QuotaServiceFactory.getQuotaService();
    long start = qs.getCpuTimeInMegaCycles();

    //Request the user Agent info
    String userAgent = req.getHeader("User-Agent");

    //The three lines below will get the CPU after requesting User-Agent Information 
    // and informed it to the application log.
    long end = qs.getCpuTimeInMegaCycles();
    double cpuSeconds = qs.convertMegacyclesToCpuSeconds(end - start);
    log.warning("CPU Seconds on geting User Agent: " + cpuSeconds);

上面代码告诉我的唯一事情是检查标头将使用超过一秒(1000毫秒)的CPU时间,这对于Google来说是日志面板上的警告.这似乎是一个非常简单的请求,仍然使用超过一秒的CPU.

我错过了什么？

---

每个人的娱乐日志图像下方.

Google App Engine慢速报告的日志http://r2c.images.s3.amazonaws.com/forums/r2c-3-28-2010-001.jpg

为了所有人的利益,我发布了完整的代码.

@SuppressWarnings("serial")
public class R2CComingSoonSiteServlet extends HttpServlet {

private static final Logger log = Logger.getLogger(R2CComingSoonSiteServlet.class.getName());

public void doGet(HttpServletRequest req, HttpServletResponse resp)
        throws IOException {
    //The two lines below will get the CPU before requesting User-Agent Information
    QuotaService qs = QuotaServiceFactory.getQuotaService();
    long start = qs.getCpuTimeInMegaCycles();

    //Request the user Agent info
    String userAgent = req.getHeader("User-Agent");

    //The three lines below will get the CPU after requesting User-Agent Information 
    // and informed it to the application log.
    long end = qs.getCpuTimeInMegaCycles();
    double cpuSeconds = qs.convertMegacyclesToCpuSeconds(end - start);
    log.warning("CPU Seconds on geting User Agent: " + cpuSeconds);

    userAgent = userAgent.toLowerCase();
    if(userAgent.contains("iphone"))
        resp.sendRedirect("/mobIndex.html");
    else
        resp.sendRedirect("/index.html");} }

Answer 1

App Engine 上不再有任何每分钟配额。任何涉及他们的消息都已过时。如果您想更好地分析 CPU 使用情况，您可能需要尝试新发布的Java 版 appstats。