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7188176: The JVM should differentiate between T and M series and adjust GC ergonomics

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Reviewed-by: kvn
This commit is contained in:
Tao Mao 2012-09-24 11:07:03 -07:00 • committed by Christian Thalinger
parent 302540691b
commit c791cfaf95
2 changed files with 8 additions and 2 deletions
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6
hotspot/src/cpu/sparc/vm/vm_version_sparc.cpp
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@ -339,7 +339,11 @@ void VM_Version::revert() {
unsigned int VM_Version::calc_parallel_worker_threads() {
unsigned int result;
if (is_niagara_plus()) {
if (is_M_series()) {
// for now, use same gc thread calculation for M-series as for niagara-plus
// in future, we may want to tweak parameters for nof_parallel_worker_thread
result = nof_parallel_worker_threads(5, 16, 8);
} else if (is_niagara_plus()) {
result = nof_parallel_worker_threads(5, 16, 8);
} else {
result = nof_parallel_worker_threads(5, 8, 8);

4
hotspot/src/cpu/sparc/vm/vm_version_sparc.hpp
View file

@ -1,5 +1,5 @@
/*
* Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 1997, 2012, Oracle and/or its affiliates. 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
@ -124,6 +124,8 @@ public:
// Returns true if the platform is in the niagara line (T series)
// and newer than the niagara1.
static bool is_niagara_plus() { return is_T_family(_features) && !is_T1_model(_features); }
static bool is_M_series() { return is_M_family(_features); }
static bool is_T4() { return is_T_family(_features) && has_cbcond(); }
// Fujitsu SPARC64