On Sat, Jul 21, 2012 at 9:24 PM, hyperflame <[email protected]> wrote:
>
> I bet that the major reason is just network I/O, for the GAE servers
> to find an available server, transfer a copy of the application
> +libraries to that server, and start up the servlet runner. It would
> explain why even simple apps have long startup times: it's not that
> the frameworks and libraries are taking a long time, it's just the
> overhead of moving all those libraries into place initially.

The problem specifically seems to be that classloading is slow.  A
significant part of that is explained by slow network I/O, but not
all; for example, getting AOP proxies built and loaded seems to take
significantly longer than one would expect by profiling locally.  I
speculate that the extra security measures of GAE's sandbox are also
taking a toll.

Jeff

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