Puma 7 on JRuby is 20 times slower on TechEmpower

Describe the bug The TechEmpower benchmark runs for rack-puma-jruby-sequel-raw show a significant performance regression after upgrading to Puma 7. Fixes in 7.0.1 improved the results somewhat but there still is a big gap with 6.6.0.

With Puma 6.6.0:

https://www.techempower.com/benchmarks/#section=test&runid=9d2e8e26-cb0c-48ff-8b97-dc2081b2db61&p=zik0zj-zik0zj-zih7un-zik0zj-zik0zj-cn3&w=zik0zj-zik0zj-zik0xr-8vn08v&f=zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zf-zik0zj-zik0zj-zik0zj-zik0zj-18y67

With Puma 7.0.3:

https://www.techempower.com/benchmarks/#section=test&runid=d27544b6-7365-4269-a4d4-f908f0d21a3e&p=zik0zj-zik0zj-zih7un-zik0zj-zik0zj-1ekf&f=zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zj-zik0zf-zik0zj-zik0zj-zik0zj-zik0zj-hra0hr

To Reproduce

Checkout the repo at: https://github.com/TechEmpower/FrameworkBenchmarks

Run the rack test with:

./tfb --test rack-jruby --type fortune