Added webrev for jdk18/66

Author: duke

jdk18/66/00/commits.json

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+[{"commit":{"message":"8278824: Increase chunks per region for G1 vm root scan"},"files":[{"filename":"src\/hotspot\/share\/gc\/g1\/g1RemSet.cpp"}],"sha":"801c72ee4b959f67ca7a45eec0575f5d65a6e99f"}]

jdk18/66/00/comparison.json

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+{"files":[{"patch":"@@ -109,1 +109,1 @@\n-  \/\/ Testing showed that 8 for 1M\/2M region, 16 for 4M\/8M regions, 32 for 16\/32M regions,\n+  \/\/ Testing showed that 64 for 1M\/2M region, 128 for 4M\/8M regions, 256 for 16\/32M regions,\n@@ -117,1 +117,1 @@\n-    return 1u << (log_region_size \/ 2 - 7);\n+    return 1u << (log_region_size \/ 2 - 4);\n","filename":"src\/hotspot\/share\/gc\/g1\/g1RemSet.cpp","additions":2,"deletions":2,"binary":false,"changes":4,"status":"modified"}]}

jdk18/66/00/metadata.json

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+{"head":{"repo":{"full_name":"earthling-amzn\/jdk18","html_url":"https:\/\/github.com\/earthling-amzn\/jdk18"},"sha":"801c72ee4b959f67ca7a45eec0575f5d65a6e99f"},"created_at":"2021-12-22T19:55:29.472158582Z","base":{"repo":{"full_name":"openjdk\/jdk18","html_url":"https:\/\/git.openjdk.java.net\/jdk18"},"sha":"04ee9211fcc59178b3bfdfdda5e0def9b0f29ada"}}