JMH: gc.alloc.rate of final iteration drops down to ~5% for benches Als, DecTree

[dhanalla]

gc.alloc.rate of final iteration drops down to ~5% of remaining iterations for benches (Als, DecTree, FjKmeans, LogRegression, MovieLens , NaiveBayes, PageRank)

command to reproduce the isue:
java -jar renaissance-jmh-0.14.1-10.jar -f 5 -bm avgt -prof gc -rf json -rff Als_RAM.json Als
issue reproduces on windows & linux.

Als_RAM.json:

"secondaryMetrics" : {
"·gc.alloc.rate" : {
"scoreUnit" : "MB/sec",
"rawData" : [
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],
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],