Mercurial > hg > truffle
changeset 6797:3a327d0b8586
7188176: The JVM should differentiate between T and M series and adjust GC ergonomics
Reviewed-by: kvn
Contributed-by: Tao Mao <tao.mao@oracle.com>
| author | twisti |
|---|---|
| date | Mon, 24 Sep 2012 11:07:03 -0700 |
| parents | 7eca5de9e0b6 |
| children | f7c1f489db55 |
| files | src/cpu/sparc/vm/vm_version_sparc.cpp src/cpu/sparc/vm/vm_version_sparc.hpp |
| diffstat | 2 files changed, 8 insertions(+), 2 deletions(-) [+] |
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--- a/src/cpu/sparc/vm/vm_version_sparc.cpp Thu Sep 20 16:49:17 2012 +0200 +++ b/src/cpu/sparc/vm/vm_version_sparc.cpp Mon Sep 24 11:07:03 2012 -0700 @@ -339,7 +339,11 @@ 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);
--- a/src/cpu/sparc/vm/vm_version_sparc.hpp Thu Sep 20 16:49:17 2012 +0200 +++ b/src/cpu/sparc/vm/vm_version_sparc.hpp Mon Sep 24 11:07:03 2012 -0700 @@ -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 @@ // 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