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primiano
/ Perfetto UI postmessage + plugin args
Created
June 6, 2024 13:44
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| <!doctype html> | |
| <html lang="en-us"> | |
| <link rel="shortcut icon" href="data:image/x-icon;," type="image/x-icon"> | |
| <body> | |
| <style> | |
| pre { | |
| border: 1px solid #eee; | |
| margin: 10px 0; | |
| font-family: monospace; |
primiano
/ trace_processor_parsing_graph.svg
Created
November 9, 2021 11:19
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primiano
/ trace_processor.mermaid
Last active
November 9, 2021 11:16
Trace processor ingestion graph
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primiano
/ open_with_perfetto_ui.html
Last active
May 16, 2022 12:19
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| <!doctype html> | |
| <html lang="en-us"> | |
| <link rel="shortcut icon" href="data:image/x-icon;," type="image/x-icon"> | |
| <body> | |
| <style> | |
| pre { | |
| border: 1px solid #eee; | |
| margin: 10px 0; | |
| font-family: monospace; |
primiano
/ trace_processor_binary_format.js
Created
June 9, 2020 21:10
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| const encoder = new TextEncoder('utf-8'); | |
| const decoder = new TextDecoder('utf-8'); | |
| const TAG_MASK = 0x3; | |
| const TAG_INT32 = 0; | |
| const TAG_FLOAT64 = 1; | |
| const TAG_STRING = 2; | |
| function encode(cells) { |
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| import zipfile, sys | |
| zip = zipfile.ZipFile(sys.argv[1]) | |
| for f in zip.infolist(): | |
| # I have no idea about the +2 but observed experimentally that it gets us | |
| # to the right place. | |
| print('%-16x %-10d %s' % (f.header_offset + len(f.FileHeader()) + 2, f.compress_size, f.filename)) |
primiano
/ 01-another-vector-perftest-using-structs.sh
Created
May 30, 2017 12:56
Another vector perftest using structs
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| $ sudo cpupower frequency-set -g powersave | |
| $ sudo sh -c "echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo | |
| $ for cpu in /sys/devices/system/cpu/cpu*; do for p in $(seq 4); do sudo sh -c "echo 1 > $cpu/cpuidle/state$p/disable"; done; do | |
| #################### | |
| # Use emplace_back() | |
| #################### | |
| $ perf stat out/offlnx/ctest | |
| tcmalloc: large alloc 1600000000 bytes == 0x349af33da000 @ |
primiano
/ 01-vector-data-vs-operator-square-bracket-vs-push_back-perftests.sh
Last active
May 30, 2017 13:10
std::vector data() vs operator[] vs push_back perftests
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| $ sudo cpupower frequency-set -g powersave | |
| $ sudo sh -c "echo 1 > /sys/devices/system/cpu/intel_pstate/no_turbo | |
| $ for cpu in /sys/devices/system/cpu/cpu*; do for p in $(seq 4); do sudo sh -c "echo 1 > $cpu/cpuidle/state$p/disable"; done; do | |
| ######################### | |
| # F1, use data() directly | |
| ######################### | |
| $ perf stat out/offlnx/ctest 1 | |
| Performance counter stats for 'out/offlnx/ctest 1': |
primiano
/ tracing_macro_constexpr_for_gcc.cc
Last active
April 6, 2017 17:00
tracing_macro_constexpr_for_gcc.cc
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| context: crbug.com/708990 | |
| #include <stdint.h> | |
| #include <stdio.h> | |
| #include <string.h> | |
| struct Category { | |
| const char *name; | |
| uint8_t is_enabled; | |
| }; |
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| #include <stdint.h> | |
| #include <stdio.h> | |
| #include <string.h> | |
| struct Category { | |
| const char *name; | |
| uint8_t is_enabled; | |
| }; | |
| constexpr uint32_t N = 100; |
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