A licensee reported the performance with "server" option on solaris
and windows and they said that the perf. looks too slow comparing
to that with other options.
 
Licensee Reported Data)

JDK: 1.3.1
           | Options
  Platform |-----------+-------+---------+--------------------------------
           | No Option | -Xint | -server | -server & -XXUseRecompilation
 ----------+-----------+-------+---------+--------------------------------
 winNT4.0 | 70ms | 481ms | 13069ms | 431ms
 ----------+-----------+-------+---------+--------------------------------
 Solaris 8 | 133ms | 930ms | N/A | 1057ms
 -------------------------------------------------------------------------
 N/A : the following message showed up
   Exception in thread "main" java.lang.StackOverflowError
         <<no stack trace available>>

                                                
They did not mentions the configrations.
Then I tried the attached sample program with my PC and Workstation.

My trial's Data)
           | Options
  Platform |-----------+-------+---------+--------------------------------
           | No Option | -Xint | -server | -server & -XXUseRecompilation
 ----------+-----------+-------+---------+--------------------------------
 win2000 | 20ms | 140ms | 4887ms | 131ms
 ----------+-----------+-------+---------+--------------------------------
 Solaris 7 | 474ms | 5224ms| N/A | 4653ms
 -------------------------------------------------------------------------
 Configration)
   PC: PentiumIV 1.4[GHz]
        Mem 384[MB]
        JDK: 1.3.1_01
        windows2000(SP2, Japanese)
   WS: SunOS goedel 5.7 Generic_106541-15 sun4u sparc SUNW,Ultra-60
        Mem: 256[MB]
        JDK1.3.1
        
   I built each binary from source code archive in order to use the
   -XX option.


<< Reproduce >>

  Please try as follows both with Solaris and Windoows.

  1) Build hotspot from source code archive because -XX option will needed
     later
  2) Compile the attached sample code(RecompileTest.java)
  3) Please invoke the sample
     - java RecompileTest
     - java -Xint RecompileTest
     - java -server RecompileTest
     - java -server -XX:-UseRecompilation RecompileTest

     Then you can see the attached rsult file(solaris-result.txt,
     windows-result.txt)
 
2001-12-07
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