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Chris,

On 7/16/12 9:54 AM, CRANFORD, CHRIS wrote:
> When upgrading from 7.0.26 to 7.0.29, MyEclipse cannot start the
> Tomcat instance without reaching an OutOfMemoryError exception that
> results from a "GC overhead limit exceeded" when Tomcat begins
> it's multi-threaded deployment process.  MyEclipse is running with
> 1GB of maximum memory and still errors with this exception where-as
> reverting back to 7.0.26 and using only 512MB of memory, the
> instance starts without any issues with plenty of memory to spare.
> 
> 
> Have any others experienced this issue using Tomcat 7.0.29's 
> Multi-Thread deployment in UserConfig?
> 
> Is there anyway to disable this feature globally?

You got your question answered in another thread (the real problem is
JAR scanning and metadata cashing taking up way too much memory: using
metadata-complete="true" in web.xml should fix it) but I'll answer the
question you asked, here, anyway.

Globally, Tomcat's default is to use 1 deployment thread when starting
a Host's contexts. See
http://tomcat.apache.org/tomcat-7.0-doc/config/host.html, look for
"startStopThreads". Tomcat will only do "true" parallel deployment if
you explicitly set startStopThreads to some other value.

- -chris
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