c2 is reporting very high compile times while running SPECjvm98 javac sub-test. The problem is not limited to overall time spent in compilation, but there are large outliers in the range of compile times.
 
Mantis is 36% behind the competition on SPECjvm98 javac, and 16% behind the competition on SPECjvm98 composite score, javac is the sub-test in which we are furthest behind.

SPECjvm98 javac is the 1.0.2 release of javac. compileClass (see below) is a big 370 line method, including several try/catches, which may be suggestive.

The 1.0.2 javac source can be found here:
/java/re/jdk/1.0.2/archive/ws/JDK1.0.2/src/share/sun/sun/tools/javac

The SPECjvm98 test bits and scripts can be found here:
/net/thirdeye.east/software/performance/jvm98/jvm98.c2perf.zip

The script to run just the javac subtest is: runjvm98-javac.sh
The path to the JVM in the test script along with the results variable output directory name will need to be edited.

INSERT: ----- TIMES BELOW ARE FOR A DEBUG BUILD OF THE VM -----

Below is a list of the top 10 highest compile times. The times below have been visually confirmed to be seconds.

top 10 highest C2 compile times reported by -XX:+PrintCompilation -XX:+CITimeEach (debug VM)

288 s! spec.benchmarks._213_javac.Javac::compile (1289 bytes)
288 seconds: 49.430146 bytes/sec : 26.077204 (bytes 1289 + 0 inlined)
 74 ! spec.benchmarks._213_javac.SourceClass::compileClass (1665 bytes)
 74 seconds: 38.492589 bytes/sec : 43.255081 (bytes 1665 + 0 inlined)
117 ! spec.benchmarks._213_javac.SourceField::check (949 bytes)
117 seconds: 18.440095 bytes/sec : 51.463943 (bytes 949 + 0 inlined)
299 spec.benchmarks._213_javac.Parser::parseTerm (1469 bytes)
299 seconds: 16.102687 bytes/sec : 91.227013 (bytes 1469 + 0 inlined)
173 ! spec.benchmarks._213_javac.Parser::parseStatement (1576 bytes)
173 seconds: 13.819106 bytes/sec : 114.045006 (bytes 1576 + 0 inlined)
184 ! spec.benchmarks._213_javac.BatchParser::beginClass (385 bytes)
184 seconds: 11.601863 bytes/sec : 33.184326 (bytes 385 + 0 inlined)
  3% spec.benchmarks._213_javac.Parser::parseExpression @ 8 (1135 bytes)
  3 seconds: 11.572973 bytes/sec : 98.073334 (bytes 1135 + 0 inlined)
215 spec.benchmarks._213_javac.Instruction::write (1380 bytes)
215 seconds: 10.700115 bytes/sec : 128.970566 (bytes 1380 + 0 inlined)
239 spec.benchmarks._213_javac.BinaryClass::load (493 bytes)
239 seconds: 10.432496 bytes/sec : 47.256191 (bytes 493 + 0 inlined)
198 ! spec.benchmarks._213_javac.MethodExpression::checkValue (1030 bytes)
198 seconds: 10.106472 bytes/sec : 101.914886 (bytes 1030 + 0 inlined)


Overall Compile Time Summary and Comparison:


C1 Compile Time as reported by -XX:+CITime running java

 Total compilation time : 2.372 s
    Standard compilation : 2.370 s, Average : 0.004
    On stack replacement : 0.000 s, Average : NaN
    Native methods : 0.002 s, Average : 0.000
    Detailed C1 Timings
       Setup time: 0.123 s ( 5.3%)
       Build IR: 1.037 s (44.2%)
         Optimize: 0.086 s ( 3.7%)
         Loop Comp.: 0.033 s ( 1.4%)
       Emit LIR: 0.359 s (15.3%)
       Cache Locals: 0.122 s ( 5.2%)
       LIR Optimize: 0.224 s ( 9.5%)
       Code Emission: 0.378 s (16.1%)
       Code Installation: 0.103 s ( 4.4%)
       Instruction Nodes: 114820 nodes

  Total compiled bytecodes : 120954 bytes
    Standard compilation : 120954 bytes
    On stack replacement : 0 bytes
  Average compilation speed: 50985 bytes/s

  nmethod code size : 507348 bytes
  nmethod total size : 1229768 bytes

C2 Compile Time as reported by -XX:+CITime running javac

  Total compilation time : 50.903 s
    Standard compilation : 49.395 s, Average : 0.117
    On stack replacement : 1.482 s, Average : 0.185
    Native methods : 0.026 s, Average : 0.004

  Total compiled bytecodes : 79767 bytes
    Standard compilation : 76544 bytes
    On stack replacement : 3223 bytes
  Average compilation speed: 4726 bytes/s

  nmethod code size : 640036 bytes
  nmethod total size : 1359828 bytes


C2 Compile Time as reported by -XX:+CITime running mpeg

  Total compilation time : 5.253 s
    Standard compilation : 5.165 s, Average : 0.055
    On stack replacement : 0.074 s, Average : 0.018
    Native methods : 0.015 s, Average : 0.005

  Total compiled bytecodes : 15029 bytes
    Standard compilation : 14652 bytes
    On stack replacement : 377 bytes
  Average compilation speed: 3166 bytes/s

  nmethod code size : 65584 bytes
  nmethod total size : 114108 bytes