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+Wed Dec  5 23:50:23 2012  Narihiro Nakamura  <authornari@gmail.com>
+
+	* gc.c (getrusage_time): uses clock_gettime() with
+	  CLOCK_PROCESS_CPUTIME_ID when available, which provides a 1ns
+	  precision on linux. [ruby-core:50495] [Bug #7500]
+
 Wed Dec  5 22:46:02 2012  Nobuyoshi Nakada  <nobu@ruby-lang.org>
 
 	* vm.c (rb_vm_make_proc): save the proc made from the given block so