Mercurial > jdk8-mips64-public > hotspot / annotate
src/share/vm/Xusage.txt@7b0e9cba0307 (annotated)
src/share/vm/Xusage.txt
Wed, 13 Jan 2010 15:26:39 -0800
- author
- ysr
- date
- Wed, 13 Jan 2010 15:26:39 -0800
- changeset 1601
- 7b0e9cba0307
- parent 0
- f90c822e73f8
- permissions
- -rw-r--r--
6896647: card marks can be deferred too long
Summary: Deferred card marks are now flushed during the gc prologue. Parallel[Scavege,OldGC] and SerialGC no longer defer card marks generated by COMPILER2 as a result of ReduceInitialCardMarks. For these cases, introduced a diagnostic option to defer the card marks, only for the purposes of testing and diagnostics. CMS and G1 continue to defer card marks. Potential performance concern related to single-threaded flushing of deferred card marks in the gc prologue will be addressed in the future.
Reviewed-by: never, johnc
| aoqi@0 | 1 | -Xmixed mixed mode execution (default) |
| aoqi@0 | 2 | -Xint interpreted mode execution only |
| aoqi@0 | 3 | -Xbootclasspath:<directories and zip/jar files separated by ;> |
| aoqi@0 | 4 | set search path for bootstrap classes and resources |
| aoqi@0 | 5 | -Xbootclasspath/a:<directories and zip/jar files separated by ;> |
| aoqi@0 | 6 | append to end of bootstrap class path |
| aoqi@0 | 7 | -Xbootclasspath/p:<directories and zip/jar files separated by ;> |
| aoqi@0 | 8 | prepend in front of bootstrap class path |
| aoqi@0 | 9 | -Xnoclassgc disable class garbage collection |
| aoqi@0 | 10 | -Xincgc enable incremental garbage collection |
| aoqi@0 | 11 | -Xloggc:<file> log GC status to a file with time stamps |
| aoqi@0 | 12 | -Xbatch disable background compilation |
| aoqi@0 | 13 | -Xms<size> set initial Java heap size |
| aoqi@0 | 14 | -Xmx<size> set maximum Java heap size |
| aoqi@0 | 15 | -Xss<size> set java thread stack size |
| aoqi@0 | 16 | -Xprof output cpu profiling data |
| aoqi@0 | 17 | -Xfuture enable strictest checks, anticipating future default |
| aoqi@0 | 18 | -Xrs reduce use of OS signals by Java/VM (see documentation) |
| aoqi@0 | 19 | -Xcheck:jni perform additional checks for JNI functions |
| aoqi@0 | 20 | -Xshare:off do not attempt to use shared class data |
| aoqi@0 | 21 | -Xshare:auto use shared class data if possible (default) |
| aoqi@0 | 22 | -Xshare:on require using shared class data, otherwise fail. |
| aoqi@0 | 23 | |
| aoqi@0 | 24 | The -X options are non-standard and subject to change without notice. |
