| This is a port of gperftools to the Fuchsia OS |
| |
| An example of usage of the library is at garnet/examples/profiler |
| |
| To try things out: |
| |
| # Run the test app on the target device ... |
| fx shell run profiler_example |
| |
| # Retrieve over the profiler trace |
| fx cp --to-host /tmp/profiler_example.ppf /tmp/profiler_example.ppf |
| |
| # Install the modern go based version of pprof. |
| go get -u github.com/google/pprof |
| |
| # Things to add to your .profile |
| |
| # Where does the Go pprof execute reside? |
| export GO_HOME=${HOME}/go/bin/ |
| |
| # Where does pprof search for shared libraries and executables? (macos version, need to adjust for Linux) |
| export PPROF_BINARY_PATH=\ |
| ${FUCHSIA_DIR}/out/x64/exe.unstripped:\ |
| ${FUCHSIA_DIR}/out/x64/x64-shared/lib.unstripped:\ |
| ${FUCHSIA_DIR}/buildtools/mac-x64/clang/lib/clang/8.0.0/x86_64-fuchsia/lib:\ |
| ${FUCHSIA_DIR}/out/x64/sdk/exported/zircon_sysroot/arch/x64/sysroot/debug |
| |
| # Where is the tool chain? (macos version, need to adjust for Linux) |
| export PPROF_TOOLS=\ |
| ${FUCHSIA_DIR}/buildtools/mac-x64/clang/bin |
| |
| # It is easier to execute pprof from within ${FUCHSIA_DIR}/out/x64 (or whatever appropriate to your case) |
| cd ${FUCHSIA_DIR}/out/x64 |
| |
| # Execute pprof to extract the distributions and to collate and symbolize the data. |
| ${GO_HOME}/pprof -text -lines -nodecount 35 -compact_labels -source_path ${FUCHSIA_DIR} -trim_path ../../ exe.unstripped/profiler_example_bin /tmp/profiler_example.ppf |
| Showing nodes accounting for 67.56s, 86.67% of 77.95s total |
| Dropped 256 nodes (cum <= 0.39s) |
| Showing top 35 nodes out of 57 |
| flat flat% sum% cum cum% |
| 21.20s 27.20% 27.20% 21.20s 27.20% Trie::Map::store garnet/examples/profiler/trie.h:135 (partial-inline) |
| 18.40s 23.60% 50.80% 18.40s 23.60% Trie::Map::retrieve garnet/examples/profiler/trie.h:149 (inline) |
| 6.05s 7.76% 58.56% 6.05s 7.76% std::__2::basic_string::__is_long buildtools/mac-x64/clang/lib/clang/8.0.0/include/c++/v1/string:1413 (inline) |
| 2.32s 2.98% 61.54% 2.32s 2.98% radix_map_performance_print garnet/examples/profiler/words.cc:157 |
| 2.08s 2.67% 64.21% 2.08s 2.67% memcmp zircon/third_party/ulib/musl/src/string/memcmp.c:5 |
| 1.49s 1.91% 66.12% 1.49s 1.91% check_if_magic garnet/examples/profiler/magic_numbers.cc |
| 1.15s 1.48% 67.59% 1.20s 1.54% Trie::Map::store garnet/examples/profiler/trie.h:131 (partial-inline) |
| 1.13s 1.45% 69.04% 1.13s 1.45% Trie::Map::store garnet/examples/profiler/trie.h |
| 1.09s 1.40% 70.44% 1.14s 1.46% Trie::Map::retrieve garnet/examples/profiler/trie.h:145 (inline) |
| 1.04s 1.33% 71.78% 1.04s 1.33% Trie::Map::retrieve garnet/examples/profiler/trie.h:147 (inline) |
| 0.91s 1.17% 72.94% 6.69s 8.58% std::__2::basic_string::__get_pointer buildtools/mac-x64/clang/lib/clang/8.0.0/include/c++/v1/string:1507 (inline) |
| 0.88s 1.13% 74.07% 0.88s 1.13% memcmp zircon/third_party/ulib/musl/src/string/memcmp.c:7 |
| 0.86s 1.10% 75.18% 0.86s 1.10% Trie::Map::retrieve garnet/examples/profiler/trie.h:148 (inline) |
| 0.75s 0.96% 76.14% 0.75s 0.96% std::__2::basic_string::compare buildtools/mac-x64/clang/lib/clang/8.0.0/include/c++/v1/string:3653 (inline) |
| 0.66s 0.85% 76.99% 0.66s 0.85% generate_or_check garnet/examples/profiler/magic_numbers.cc:84 |
| 0.65s 0.83% 77.82% 0.97s 1.24% std::__2::__hash_table::__emplace_unique_key_args buildtools/mac-x64/clang/lib/clang/8.0.0/include/c++/v1/__hash_table:2132 |
| 0.63s 0.81% 78.63% 0.63s 0.81% check_if_magic garnet/examples/profiler/magic_numbers.cc:49 |
| 0.63s 0.81% 79.44% 0.63s 0.81% std::__2::__hash_table::__emplace_unique_key_args buildtools/mac-x64/clang/lib/clang/8.0.0/include/c++/v1/__hash_table:2131 |
| 0.61s 0.78% 80.22% 0.61s 0.78% atomic_store /b/s/w/ir/kitchen-workdir/llvm-project/compiler-rt/lib/sanitizer_common/sanitizer_atomic_clang_x86.h:82 (inline) |
| 0.57s 0.73% 80.95% 0.57s 0.73% Trie::Set::store garnet/examples/profiler/trie.h:70 |
| 0.54s 0.69% 81.64% 4.72s 6.06% Trie::Map::store garnet/examples/profiler/trie.h:133 (partial-inline) |
| 0.52s 0.67% 82.31% 0.52s 0.67% std::__2::char_traits::compare buildtools/mac-x64/clang/lib/clang/8.0.0/include/c++/v1/__string:249 (inline) |
| 0.50s 0.64% 82.95% 0.50s 0.64% generate_or_check garnet/examples/profiler/magic_numbers.cc:82 |
| 0.50s 0.64% 83.59% 0.50s 0.64% std::__2::__constrain_hash buildtools/mac-x64/clang/lib/clang/8.0.0/include/c++/v1/__hash_table:128 (inline) |
| 0.50s 0.64% 84.23% 0.50s 0.64% std::__2::__hash_table::__emplace_unique_key_args buildtools/mac-x64/clang/lib/clang/8.0.0/include/c++/v1/__hash_table |
| 0.48s 0.62% 84.85% 0.48s 0.62% Trie::Map::store garnet/examples/profiler/trie.h:140 (inline) |
| 0.48s 0.62% 85.47% 0.48s 0.62% Trie::Map::~Map garnet/examples/profiler/trie.h:125 |
| 0.44s 0.56% 86.03% 0.44s 0.56% std::__2::__tree::__find_equal buildtools/mac-x64/clang/lib/clang/8.0.0/include/c++/v1/__tree:2060 (inline) |
| 0.24s 0.31% 86.34% 2.81s 3.60% std::__2::__tree::__find_equal buildtools/mac-x64/clang/lib/clang/8.0.0/include/c++/v1/__tree:2048 (inline) |
| 0.20s 0.26% 86.59% 0.92s 1.18% check_if_magic garnet/examples/profiler/magic_numbers.cc:48 |
| 0.05s 0.064% 86.66% 0.49s 0.63% Trie::Set::store garnet/examples/profiler/trie.h:68 |
| 0.01s 0.013% 86.67% 7.87s 10.10% radix_map_performance_print garnet/examples/profiler/words.cc:147 |
| 0 0% 86.67% 0.49s 0.63% __scudo::Allocator::allocate /b/s/w/ir/kitchen-workdir/llvm-project/compiler-rt/lib/scudo/scudo_allocator.cpp:377 |
| 0 0% 86.67% 77.95s 100% async_loop_dispatch_task zircon/system/ulib/async-loop/loop.c:398 (inline) |
| 0 0% 86.67% 77.95s 100% async_loop_dispatch_tasks zircon/system/ulib/async-loop/loop.c:378 |
| |
| #Or for a more fun browser-based interactive version of the above: |
| ${GO_HOME}/pprof -http=:8080 -source_path ${FUCHSIA_DIR} -trim_path ../../ exe.unstripped/profiler_example_bin /tmp/profiler_example.ppf |
