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+Wed Mar 9 16:20:25 2016 Koichi Sasada <ko1@atdot.net>
+
+ * benchmark/driver.rb: support memory usage benchmark.
+ use `--measure-target=[target]'.
+ Now, we can use the following targets:
+ * real (default): real time which returns process time in sec.
+ * peak: peak memory usage (physical memory) in bytes.
+ * size: last memory usage (physical memory) in bytes.
+
+ * benchmark/memory_wrapper.rb: ditto.
+
Wed Mar 9 15:04:22 2016 Koichi Sasada <ko1@atdot.net>
* benchmark/bm_vm3_gc_old_full.rb: add GC.start benchmark.