view src/cpu/sparc/vm/c2_globals_sparc.hpp @ 453:c96030fff130

6684579: SoftReference processing can be made more efficient Summary: For current soft-ref clearing policies, we can decide at marking time if a soft-reference will definitely not be cleared, postponing the decision of whether it will definitely be cleared to the final reference processing phase. This can be especially beneficial in the case of concurrent collectors where the marking is usually concurrent but reference processing is usually not. Reviewed-by: jmasa
author ysr
date Thu, 20 Nov 2008 16:56:09 -0800
parents a61af66fc99e
children 473cce303f13
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/*
 * Copyright 2000-2007 Sun Microsystems, Inc.  All Rights Reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * CA 95054 USA or visit www.sun.com if you need additional information or
 * have any questions.
 *
 */

// Sets the default values for platform dependent flags used by the server compiler.
// (see c2_globals.hpp).  Alpha-sorted.

define_pd_global(bool, BackgroundCompilation,        true);
define_pd_global(bool, CICompileOSR,                 true);
define_pd_global(bool, InlineIntrinsics,             false);
define_pd_global(bool, PreferInterpreterNativeStubs, false);
define_pd_global(bool, ProfileTraps,                 true);
define_pd_global(bool, UseOnStackReplacement,        true);
#ifdef CC_INTERP
define_pd_global(bool, ProfileInterpreter,           false);
#else
define_pd_global(bool, ProfileInterpreter,           true);
#endif // CC_INTERP
define_pd_global(bool, TieredCompilation,            false);
#ifdef TIERED
define_pd_global(intx, CompileThreshold,             1000);
define_pd_global(intx, BackEdgeThreshold,            14000);
#else
define_pd_global(intx, CompileThreshold,             10000);
define_pd_global(intx, BackEdgeThreshold,            140000);
#endif // TIERED

define_pd_global(intx, Tier2CompileThreshold,        10000); // unused level
define_pd_global(intx, Tier3CompileThreshold,        10000);
define_pd_global(intx, Tier4CompileThreshold,        40000);

define_pd_global(intx, Tier2BackEdgeThreshold,       100000);
define_pd_global(intx, Tier3BackEdgeThreshold,       100000);
define_pd_global(intx, Tier4BackEdgeThreshold,       100000);

define_pd_global(intx, OnStackReplacePercentage,     140);
define_pd_global(intx, ConditionalMoveLimit,         4);
define_pd_global(intx, FLOATPRESSURE,                52);  // C2 on V9 gets to use all the float/double registers
define_pd_global(intx, FreqInlineSize,               175);
define_pd_global(intx, INTPRESSURE,                  48);  // large register set
define_pd_global(intx, InteriorEntryAlignment,       16);  // = CodeEntryAlignment
define_pd_global(intx, NewRatio,                     2);
define_pd_global(intx, NewSizeThreadIncrease, ScaleForWordSize(4*K));
// The default setting 16/16 seems to work best.
// (For _228_jack 16/16 is 2% better than 4/4, 16/4, 32/32, 32/16, or 16/32.)
define_pd_global(intx, OptoLoopAlignment,            16);  // = 4*wordSize
define_pd_global(intx, RegisterCostAreaRatio,        12000);
define_pd_global(bool, UseTLAB,                      true);
define_pd_global(bool, ResizeTLAB,                   true);
define_pd_global(intx, LoopUnrollLimit,              60); // Design center runs on 1.3.1

// Peephole and CISC spilling both break the graph, and so makes the
// scheduler sick.
define_pd_global(bool, OptoPeephole,                 false);
define_pd_global(bool, UseCISCSpill,                 false);
define_pd_global(bool, OptoBundling,                 false);
define_pd_global(bool, OptoScheduling,               true);

#ifdef _LP64
// We need to make sure that all generated code is within
// 2 gigs of the libjvm.so runtime routines so we can use
// the faster "call" instruction rather than the expensive
// sequence of instructions to load a 64 bit pointer.
//
// InitialCodeCacheSize derived from specjbb2000 run.
define_pd_global(intx, InitialCodeCacheSize,     2048*K); // Integral multiple of CodeCacheExpansionSize
define_pd_global(intx, ReservedCodeCacheSize,    48*M);
define_pd_global(intx, CodeCacheExpansionSize,   64*K);

// Ergonomics related flags
define_pd_global(uintx, DefaultMaxRAM,           32*G);
#else
// InitialCodeCacheSize derived from specjbb2000 run.
define_pd_global(intx, InitialCodeCacheSize,     1536*K); // Integral multiple of CodeCacheExpansionSize
define_pd_global(intx, ReservedCodeCacheSize,    32*M);
define_pd_global(intx, CodeCacheExpansionSize,   32*K);
// Ergonomics related flags
define_pd_global(uintx, DefaultMaxRAM,           1*G);
#endif
define_pd_global(uintx,CodeCacheMinBlockLength,  4);

// Heap related flags
define_pd_global(uintx, PermSize,    ScaleForWordSize(16*M));
define_pd_global(uintx, MaxPermSize, ScaleForWordSize(64*M));

// Ergonomics related flags
define_pd_global(bool, NeverActAsServerClassMachine, false);