Mercurial > hg > graal-jvmci-8
annotate make/pic.make @ 2368:dde920245681
6896099: Integrate CMS heap ergo with default heap sizing ergo
6627787: CMS: JVM refuses to start up with -Xms16m -Xmx16m
7000125: CMS: Anti-monotone young gen sizing with respect to maximum whole heap size specification
7027529: CMS: retire CMSUseOldDefaults flag
Summary: Simplify CMS heap sizing code, relying on ergonomic initial sizing consistent with other collectors for the most part, controlling only young gen sizing to rein in pause times. Make CMS young gen sizing default statically cpu-dependant. Remove inconsistencies wrt generation sizing and policy code, allowing for the fixing for 6627787 and 7000125. For 7027529, retire the flag CMSUseOldDefaults which had been introduced as a bridge from JDK 5 to JDK 6 a number of years ago.
Reviewed-by: brutisso, poonam
author | ysr |
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date | Wed, 16 Mar 2011 10:37:08 -0700 |
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1 # |
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2 # Copyright (c) 2006, 2007, Oracle and/or its affiliates. All rights reserved. |
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3 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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4 # |
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5 # This code is free software; you can redistribute it and/or modify it |
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6 # under the terms of the GNU General Public License version 2 only, as |
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7 # published by the Free Software Foundation. |
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8 # |
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9 # This code is distributed in the hope that it will be useful, but WITHOUT |
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10 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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11 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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12 # version 2 for more details (a copy is included in the LICENSE file that |
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13 # accompanied this code). |
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14 # |
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15 # You should have received a copy of the GNU General Public License version |
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16 # 2 along with this work; if not, write to the Free Software Foundation, |
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17 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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18 # |
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19 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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20 # or visit www.oracle.com if you need additional information or have any |
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21 # questions. |
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22 # |
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23 # |
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24 |
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25 # A list of object files built without the platform specific PIC flags, e.g. |
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26 # -fPIC on linux. Performance measurements show that by compiling GC related |
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27 # code, we could significantly reduce the GC pause time on 32 bit Linux/Unix |
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28 # platforms. See 6454213 for more details. |
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29 include $(GAMMADIR)/make/scm.make |
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30 |
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31 ifneq ($(OSNAME), windows) |
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32 ifndef LP64 |
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33 NONPIC_DIRS = memory oops gc_implementation gc_interface |
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34 NONPIC_DIRS := $(foreach dir,$(NONPIC_DIRS), $(GAMMADIR)/src/share/vm/$(dir)) |
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35 # Look for source files under NONPIC_DIRS |
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36 NONPIC_FILES := $(foreach dir,$(NONPIC_DIRS),\ |
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37 $(shell find $(dir) \( $(SCM_DIRS) \) -prune -o \ |
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38 -name '*.cpp' -print)) |
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39 NONPIC_OBJ_FILES := $(notdir $(subst .cpp,.o,$(NONPIC_FILES))) |
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40 endif |
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41 endif |