CPU utilisation issue when using XSLT Threading.

Issue

• When running multiple threads in camel and calling xslt, xslt causes the performance to plateau.
• Verified that without xslt the camel route user has deployed, can go beyond where xslt limits the performance.
• The threads are actually blocking in the xslt component which is limiting the scalability of fuse.
• Basically the CPU reach a certain level of utilization and then plateau when using xslt.