Shevek created FREEMARKER-80:
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Summary: Performance bottleneck (from profiling)
Key: FREEMARKER-80
URL: https://issues.apache.org/jira/browse/FREEMARKER-80
Project: Apache Freemarker
Issue Type: Bug
Components: engine
Affects Versions: 2.3.26-incubating
Environment: Linux, Java 8
Reporter: Shevek
Major performance bottleneck running on a 32-core system, limits effective
number of threads to about 6: PropertyDescriptor.getReadMethod() is
synchronized, and blocks other threads. Partial stack follows:
java.beans.PropertyDescriptor.getReadMethod()
BeanModel.invokeThroughDescriptor()
BeanModel.get()
Dot._eval()
I suspect there's a workaround with using a method call directly in the FTL
template, but I haven't figured it out yet. However, this is killing our
performance. With Velocity, at the cost of a slower renderer, we can run all 32
cores, and get the job done faster.
I'm not entirely sure how to figure out which piece of FTL is causing this
stack.
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