On Jan 7, 2011, at 8:36 PM, Rodrigo Rosenfeld Rosas wrote: > It seems a lot is needed for running a simple ruby script with 1.9 while much > less is required by 1.8. > > Charles Nutter has talked recently about some tips to speed jruby startup > time. One of them is "export JAVA_OPTS='-d32'", but I get this on Linux: > > Running a 32-bit JVM is not supported on this platform.
It probably means that you don't have a 32-bit JVM installed. http://java.com/en/download/manual.jsp You'll want the second one in the Linux list. > > Is there any other tip that I could use for a 64-bit JVM on Linux to speed up > the startup time? Having said that, if the 1.9 start-up time is driven by disk I/O for reading lots of files (which I suspect is the case), the changing JVM won't help you much. [system]:~ $ time jruby -v -J-Djruby.debug.loadService.timing=true --1.9 -e 'p 1' jruby 1.6.0.dev (ruby 1.9.2 trunk 136) (2011-01-07 19f7456) (Java HotSpot(TM) 64-Bit Server VM 1.6.0_22) [darwin-x86_64-java] -> thread.jar <- thread.jar - 5ms -> rbconfig <- rbconfig - 151ms -> rubygems/defaults/operating_system <- rubygems/defaults/operating_system - 15ms -> enumerator -> generator_internal -> thread <- thread - 0ms <- generator_internal - 83ms <- enumerator - 112ms 1 real 0m1.660s user 0m1.502s sys 0m0.152s [system]:~ $ JAVA_OPTS=-d32 time jruby -v -J-Djruby.debug.loadService.timing=true --1.9 -e 'p 1' jruby 1.6.0.dev (ruby 1.9.2 trunk 136) (2011-01-07 19f7456) (Java HotSpot(TM) Client VM 1.6.0_22) [darwin-i386-java] -> thread.jar <- thread.jar - 7ms -> rbconfig <- rbconfig - 204ms -> rubygems/defaults/operating_system <- rubygems/defaults/operating_system - 6ms -> enumerator -> generator_internal -> thread <- thread - 0ms <- generator_internal - 25ms <- enumerator - 46ms 1 1.45 real 1.06 user 0.14 sys --------------------------------------------------------------------- To unsubscribe from this list, please visit: http://xircles.codehaus.org/manage_email
