From: "rosenfeld (Rodrigo Rosenfeld Rosas)" Date: 2013-07-19T20:46:10+09:00 Subject: [ruby-core:56086] [CommonRuby - Feature #8640] Add Time#elapsed to return nanoseconds since creation Issue #8640 has been updated by rosenfeld (Rodrigo Rosenfeld Rosas). You're right, Matthew, although I'd appreciate some bookmark capabilities... But I understand it would be more costly since you'd need to malloc and free the struct everytime a bookmark is created... Tanaka, I believe most people are interested in elapsed time rather than absolute time (Process.clock_gettime, System.currentTimeMillis(), etc). Having to process the elapsed time in the Ruby side is probably slower than doing the math on the C side, right? ---------------------------------------- Feature #8640: Add Time#elapsed to return nanoseconds since creation https://bugs.ruby-lang.org/issues/8640#change-40585 Author: tenderlovemaking (Aaron Patterson) Status: Open Priority: Normal Assignee: Category: Target version: Hi, We time many things in Rails (and so does lots of other code), and I've found that we spend lots of time allocating and subtracting time objects. For example: start = Time.now ## do stuff we want to time finish = Time.now - start It would be nice if we could just create one time object and grab the nanoseconds elapsed since the time object was created like so: start = Time.now ## do stuff we want to time finished = start.elapsed # => nanoseconds elapsed. I've attached a patch that implements this feature. -- http://bugs.ruby-lang.org/