Details
Backports
| Issue | Fix Version | Assignee | Priority | Status | Resolution | Resolved In Build |
|---|---|---|---|---|---|---|
| JDK-2207272 | 7 | John Cuthbertson | P4 | Closed | Fixed | b132 |
Description
Whne the maximum heap size allows compressed oops to be turned on, the following code in arguments.cpp:
#ifdef _LP64
// Check that UseCompressedOops can be set with the max heap size allocated
// by ergonomics.
if (MaxHeapSize <= max_heap_for_compressed_oops()) {
#if !defined(COMPILER1) || defined(TIERED)
if (FLAG_IS_DEFAULT(UseCompressedOops) && !UseG1GC) {
FLAG_SET_ERGO(bool, UseCompressedOops, true);
}
#endif
turns off compressed oops when G1 is enabled.
This is incorrect.
#ifdef _LP64
// Check that UseCompressedOops can be set with the max heap size allocated
// by ergonomics.
if (MaxHeapSize <= max_heap_for_compressed_oops()) {
#if !defined(COMPILER1) || defined(TIERED)
if (FLAG_IS_DEFAULT(UseCompressedOops) && !UseG1GC) {
FLAG_SET_ERGO(bool, UseCompressedOops, true);
}
#endif
turns off compressed oops when G1 is enabled.
This is incorrect.
Attachments
Issue Links
- backported by
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JDK-2207272 G1: Turn on compressed oops by default.
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- Closed
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