J. Duke | 319a3b9 | 2007-12-01 00:00:00 +0000 | [diff] [blame^] | 1 | #!/usr/sbin/dtrace -Zs |
| 2 | /* |
| 3 | * Copyright 2006 Sun Microsystems, Inc. All Rights Reserved. |
| 4 | * |
| 5 | * Redistribution and use in source and binary forms, with or without |
| 6 | * modification, are permitted provided that the following conditions |
| 7 | * are met: |
| 8 | * |
| 9 | * - Redistributions of source code must retain the above copyright |
| 10 | * notice, this list of conditions and the following disclaimer. |
| 11 | * |
| 12 | * - Redistributions in binary form must reproduce the above copyright |
| 13 | * notice, this list of conditions and the following disclaimer in the |
| 14 | * documentation and/or other materials provided with the distribution. |
| 15 | * |
| 16 | * - Neither the name of Sun Microsystems nor the names of its |
| 17 | * contributors may be used to endorse or promote products derived |
| 18 | * from this software without specific prior written permission. |
| 19 | * |
| 20 | * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS |
| 21 | * IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, |
| 22 | * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR |
| 23 | * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR |
| 24 | * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, |
| 25 | * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, |
| 26 | * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR |
| 27 | * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF |
| 28 | * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING |
| 29 | * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
| 30 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 31 | */ |
| 32 | |
| 33 | /* |
| 34 | */ |
| 35 | |
| 36 | /* |
| 37 | * Usage: |
| 38 | * 1. gc_time_stat.d -c "java ..." INTERVAL_SECS |
| 39 | * 2. gc_time_stat.d -p JAVA_PID INTERVAL_SECS |
| 40 | * |
| 41 | * This script measures the duration of a time spent in GC. The duration is |
| 42 | * measured for every memory pool every INTERVAL_SECS seconds. If |
| 43 | * INTERVAL_SECS is not set then 10 seconds interval is used. |
| 44 | * |
| 45 | */ |
| 46 | |
| 47 | #pragma D option quiet |
| 48 | #pragma D option destructive |
| 49 | #pragma D option defaultargs |
| 50 | #pragma D option aggrate=100ms |
| 51 | |
| 52 | |
| 53 | string TEST_NAME; |
| 54 | self char *str_ptr; |
| 55 | self string mgr_name; |
| 56 | self string pool_name; |
| 57 | |
| 58 | int INTERVAL_SECS; |
| 59 | |
| 60 | :::BEGIN |
| 61 | { |
| 62 | SAMPLE_NAME = "hotspot GC tracing"; |
| 63 | |
| 64 | START_TIME = timestamp; |
| 65 | gc_total_time = 0; |
| 66 | gc_total_count = 0; |
| 67 | |
| 68 | INTERVAL_SECS = $1 ? $1 : 10; |
| 69 | SAMPLING_TIME = timestamp + INTERVAL_SECS * 1000000000ull; |
| 70 | |
| 71 | LINE_SEP = "--------------------------------------------------------"; |
| 72 | |
| 73 | printf("BEGIN %s\n\n", SAMPLE_NAME); |
| 74 | } |
| 75 | |
| 76 | |
| 77 | /* |
| 78 | * hotspot:::gc-begin |
| 79 | * arg0: uintptr_t, boolean value which indicates |
| 80 | * if this is to be a full GC or not |
| 81 | */ |
| 82 | hotspot$target:::gc-begin |
| 83 | { |
| 84 | self->gc_ts = timestamp; |
| 85 | printf("\nGC started: %Y\n", walltimestamp); |
| 86 | printf("%20s | %-20s | %10s\n", "manager", "pool", "time (ms)"); |
| 87 | printf(" %s\n", LINE_SEP); |
| 88 | } |
| 89 | |
| 90 | hotspot$target:::gc-end |
| 91 | /self->gc_ts/ |
| 92 | { |
| 93 | self->time = (timestamp - self->gc_ts) / 1000; |
| 94 | |
| 95 | printf(" %s\n", LINE_SEP); |
| 96 | printf(" %40s | %10d\n", "GC total", self->time); |
| 97 | |
| 98 | gc_total_time += self->time; |
| 99 | gc_total_count ++; |
| 100 | self->gc_ts = 0; |
| 101 | } |
| 102 | |
| 103 | /* |
| 104 | * hotspot:::mem-pool-gc-begin, hotspot:::mem-pool-gc-end |
| 105 | * arg0: char*, a pointer to mUTF-8 string data which contains the name |
| 106 | * of the manager which manages this memory pool |
| 107 | * arg1: uintptr_t, the length of the manager name (in bytes |
| 108 | * arg2: char*, a pointer to mUTF-8 string data which contains the name |
| 109 | * of the memory pool |
| 110 | * arg3: uintptr_t, the length of the memory pool name (in bytes) |
| 111 | * arg4: uintptr_t, the initial size of the memory pool (in bytes) |
| 112 | * arg5: uintptr_t, the amount of memory in use in the memory pool |
| 113 | * (in bytes) |
| 114 | * arg6: uintptr_t, the the number of committed pages in the memory pool |
| 115 | * arg7: uintptr_t, the the maximum size of the memory pool |
| 116 | */ |
| 117 | hotspot$target:::mem-pool-gc-begin |
| 118 | { |
| 119 | self->str_ptr = (char*) copyin(arg0, arg1+1); |
| 120 | self->str_ptr[arg1] = '\0'; |
| 121 | self->mgr_name = (string) self->str_ptr; |
| 122 | |
| 123 | self->str_ptr = (char*) copyin(arg2, arg3+1); |
| 124 | self->str_ptr[arg3] = '\0'; |
| 125 | self->pool_name = (string) self->str_ptr; |
| 126 | |
| 127 | self->mem_pool_ts[self->mgr_name, self->pool_name] = timestamp; |
| 128 | } |
| 129 | |
| 130 | hotspot$target:::mem-pool-gc-end |
| 131 | { |
| 132 | self->str_ptr = (char*) copyin(arg0, arg1+1); |
| 133 | self->str_ptr[arg1] = '\0'; |
| 134 | self->mgr_name = (string) self->str_ptr; |
| 135 | |
| 136 | self->str_ptr = (char*) copyin(arg2, arg3+1); |
| 137 | self->str_ptr[arg3] = '\0'; |
| 138 | self->pool_name = (string) self->str_ptr; |
| 139 | |
| 140 | self->time = |
| 141 | (timestamp - self->mem_pool_ts[self->mgr_name, self->pool_name]) / 1000; |
| 142 | |
| 143 | printf( |
| 144 | "%20s | %-20s | %10d\n", self->mgr_name, self->pool_name, self->time); |
| 145 | |
| 146 | @mem_pool_total_time[self->mgr_name, self->pool_name] = sum(self->time); |
| 147 | self->mem_pool_ts[self->mgr_name, self->pool_name] = 0; |
| 148 | |
| 149 | @mem_pool_count[self->mgr_name, self->pool_name] = count(); |
| 150 | } |
| 151 | |
| 152 | tick-1sec |
| 153 | /timestamp > SAMPLING_TIME/ |
| 154 | { |
| 155 | trace_time = (timestamp - START_TIME) / 1000; |
| 156 | |
| 157 | printf(" %s\n", LINE_SEP); |
| 158 | printf("\nGC statistics, time: %Y\n\n", walltimestamp); |
| 159 | printf("%20s | %-20s | %10s\n", "manager", "pool", "total time"); |
| 160 | printf(" %s\n", LINE_SEP); |
| 161 | printa("%20s | %-20s | %10@d\n", @mem_pool_total_time); |
| 162 | printf(" %s\n", LINE_SEP); |
| 163 | printf(" %40s | %10d\n", "total", gc_total_time); |
| 164 | |
| 165 | printf("\n"); |
| 166 | printf("%20s | %-20s | %10s\n", "manager", "pool", "# of calls"); |
| 167 | printf(" %s\n", LINE_SEP); |
| 168 | printa("%20s | %-20s | %10@d\n", @mem_pool_count); |
| 169 | printf(" %s\n", LINE_SEP); |
| 170 | printf(" %40s | %10d\n", "total", gc_total_count); |
| 171 | |
| 172 | SAMPLING_TIME = timestamp + INTERVAL_SECS * 1000000000ull; |
| 173 | } |
| 174 | |
| 175 | :::END |
| 176 | { |
| 177 | trace_time = (timestamp - START_TIME) / 1000; |
| 178 | |
| 179 | printf(" %s\n", LINE_SEP); |
| 180 | printf("\nGC statistics, time: %Y\n\n", walltimestamp); |
| 181 | printf("%20s | %-20s | %10s\n", "manager", "pool", "total time"); |
| 182 | printf(" %s\n", LINE_SEP); |
| 183 | printa("%20s | %-20s | %10@d\n", @mem_pool_total_time); |
| 184 | printf(" %s\n", LINE_SEP); |
| 185 | printf(" %40s | %10d\n", "total", gc_total_time); |
| 186 | |
| 187 | printf("\n"); |
| 188 | printf("%20s | %-20s | %10s\n", "manager", "pool", "# of calls"); |
| 189 | printf(" %s\n", LINE_SEP); |
| 190 | printa("%20s | %-20s | %10@d\n", @mem_pool_count); |
| 191 | printf(" %s\n", LINE_SEP); |
| 192 | printf(" %40s | %10d\n", "total", gc_total_count); |
| 193 | |
| 194 | |
| 195 | printf("\nEND of %s\n", SAMPLE_NAME); |
| 196 | } |
| 197 | |
| 198 | syscall::rexit:entry, |
| 199 | syscall::exit:entry |
| 200 | /pid == $target/ |
| 201 | { |
| 202 | exit(0); |
| 203 | } |