dweiss commented on issue #14090:
URL: https://github.com/apache/lucene/issues/14090#issuecomment-2568078503
Yep, good observation. For me, it's not the forced cpu count but the
tiered-stop-at-level that causes this to decrease:
```
> java -XX:+PrintFlagsFinal -Xmx1g -XX:TieredStopAtLevel=1
-XX:+UseParallelGC -XX:ActiveProcessorCount=1 --version 2>&1 | grep
"ReservedCodeCacheSize"
uintx ReservedCodeCacheSize = 50331648
{pd product} {default}
```
```
> java -XX:+PrintFlagsFinal -XX:TieredStopAtLevel=1 --version 2>&1 | grep
"ReservedCodeCacheSize"
uintx ReservedCodeCacheSize = 50331648
{pd product} {default}
> java -XX:+PrintFlagsFinal --version 2>&1 | grep "ReservedCodeCacheSize"
uintx ReservedCodeCacheSize = 251658240
{pd product} {ergonomic}
```
I was fairly liberal with the setting... maybe I should correct it to, say
~256mb instead of the 384?
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