1458 "Verbose output for parallel GC.") \ |
1458 "Verbose output for parallel GC.") \ |
1459 \ |
1459 \ |
1460 product(intx, ParallelGCBufferWastePct, 10, \ |
1460 product(intx, ParallelGCBufferWastePct, 10, \ |
1461 "wasted fraction of parallel allocation buffer.") \ |
1461 "wasted fraction of parallel allocation buffer.") \ |
1462 \ |
1462 \ |
1463 product(bool, ParallelGCRetainPLAB, true, \ |
1463 diagnostic(bool, ParallelGCRetainPLAB, false, \ |
1464 "Retain parallel allocation buffers across scavenges.") \ |
1464 "Retain parallel allocation buffers across scavenges; " \ |
|
1465 " -- disabled because this currently conflicts with " \ |
|
1466 " parallel card scanning under certain conditions ") \ |
1465 \ |
1467 \ |
1466 product(intx, TargetPLABWastePct, 10, \ |
1468 product(intx, TargetPLABWastePct, 10, \ |
1467 "target wasted space in last buffer as pct of overall allocation")\ |
1469 "target wasted space in last buffer as pct of overall allocation")\ |
1468 \ |
1470 \ |
1469 product(uintx, PLABWeight, 75, \ |
1471 product(uintx, PLABWeight, 75, \ |
1493 "we simulate overflow; a smaller number increases frequency") \ |
1495 "we simulate overflow; a smaller number increases frequency") \ |
1494 \ |
1496 \ |
1495 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ |
1497 product(uintx, ParGCDesiredObjsFromOverflowList, 20, \ |
1496 "The desired number of objects to claim from the overflow list") \ |
1498 "The desired number of objects to claim from the overflow list") \ |
1497 \ |
1499 \ |
1498 product(uintx, CMSParPromoteBlocksToClaim, 16, \ |
1500 diagnostic(intx, ParGCStridesPerThread, 2, \ |
|
1501 "The number of strides per worker thread that we divide up the " \ |
|
1502 "card table scanning work into") \ |
|
1503 \ |
|
1504 diagnostic(intx, ParGCCardsPerStrideChunk, 256, \ |
|
1505 "The number of cards in each chunk of the parallel chunks used " \ |
|
1506 "during card table scanning") \ |
|
1507 \ |
|
1508 product(uintx, CMSParPromoteBlocksToClaim, 16, \ |
1499 "Number of blocks to attempt to claim when refilling CMS LAB for "\ |
1509 "Number of blocks to attempt to claim when refilling CMS LAB for "\ |
1500 "parallel GC.") \ |
1510 "parallel GC.") \ |
1501 \ |
1511 \ |
1502 product(uintx, OldPLABWeight, 50, \ |
1512 product(uintx, OldPLABWeight, 50, \ |
1503 "Percentage (0-100) used to weight the current sample when" \ |
1513 "Percentage (0-100) used to weight the current sample when" \ |