1 /*
2 * Copyright (c) 2017, 2018, Red Hat, Inc. All rights reserved.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation.
7 *
8 * This code is distributed in the hope that it will be useful, but WITHOUT
9 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
10 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
11 * version 2 for more details (a copy is included in the LICENSE file that
12 * accompanied this code).
13 *
14 * You should have received a copy of the GNU General Public License version
15 * 2 along with this work; if not, write to the Free Software Foundation,
16 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
17 *
18 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
19 * or visit www.oracle.com if you need additional information or have any
20 * questions.
21 *
22 */
23
24 #include "precompiled.hpp"
25
26 #include "gc/shenandoah/shenandoahAllocTracker.hpp"
27 #include "utilities/ostream.hpp"
28
print_on(outputStream * out) const29 void ShenandoahAllocTracker::print_on(outputStream* out) const {
30 out->print_cr("ALLOCATION TRACING");
31 out->print_cr(" These are the slow-path allocations, including TLAB/GCLAB refills, and out-of-TLAB allocations.");
32 out->print_cr(" In-TLAB/GCLAB allocations happen orders of magnitude more frequently, and without delays.");
33 out->cr();
34
35 out->print("%22s", "");
36 for (size_t t = 0; t < ShenandoahAllocRequest::_ALLOC_LIMIT; t++) {
37 out->print("%12s", ShenandoahAllocRequest::alloc_type_to_string(ShenandoahAllocRequest::Type(t)));
38 }
39 out->cr();
40
41 out->print_cr("Counts:");
42 out->print("%22s", "#");
43 for (size_t t = 0; t < ShenandoahAllocRequest::_ALLOC_LIMIT; t++) {
44 out->print(SIZE_FORMAT_W(12), _alloc_size[t].num());
45 }
46 out->cr();
47 out->cr();
48
49 // Figure out max and min levels
50 int lat_min_level = +1000;
51 int lat_max_level = -1000;
52 int size_min_level = +1000;
53 int size_max_level = -1000;
54 for (size_t t = 0; t < ShenandoahAllocRequest::_ALLOC_LIMIT; t++) {
55 lat_min_level = MIN2(lat_min_level, _alloc_latency[t].min_level());
56 lat_max_level = MAX2(lat_max_level, _alloc_latency[t].max_level());
57 size_min_level = MIN2(size_min_level, _alloc_size[t].min_level());
58 size_max_level = MAX2(size_max_level, _alloc_size[t].max_level());
59 }
60
61 out->print_cr("Latency summary:");
62 out->print("%22s", "sum, ms:");
63 for (size_t t = 0; t < ShenandoahAllocRequest::_ALLOC_LIMIT; t++) {
64 out->print(SIZE_FORMAT_W(12), _alloc_latency[t].sum() / K);
65 }
66 out->cr();
67 out->cr();
68
69 out->print_cr("Sizes summary:");
70 out->print("%22s", "sum, M:");
71 for (size_t t = 0; t < ShenandoahAllocRequest::_ALLOC_LIMIT; t++) {
72 out->print(SIZE_FORMAT_W(12), _alloc_size[t].sum() * HeapWordSize / M);
73 }
74 out->cr();
75 out->cr();
76
77 out->print_cr("Latency histogram (time in microseconds):");
78 for (int c = lat_min_level; c <= lat_max_level; c++) {
79 out->print("%9d - %9d:", (c == 0) ? 0 : 1 << (c - 1), 1 << c);
80 for (size_t t = 0; t < ShenandoahAllocRequest::_ALLOC_LIMIT; t++) {
81 out->print(SIZE_FORMAT_W(12), _alloc_latency[t].level(c));
82 }
83 out->cr();
84 }
85 out->cr();
86
87 out->print_cr("Sizes histogram (size in bytes):");
88 for (int c = size_min_level; c <= size_max_level; c++) {
89 int l = (c == 0) ? 0 : 1 << (c - 1);
90 int r = 1 << c;
91 out->print("%9d - %9d:", l * HeapWordSize, r * HeapWordSize);
92 for (size_t t = 0; t < ShenandoahAllocRequest::_ALLOC_LIMIT; t++) {
93 out->print(SIZE_FORMAT_W(12), _alloc_size[t].level(c));
94 }
95 out->cr();
96 }
97 out->cr();
98 }
99