Get a Python that has frame pointers enabled
CFLAGS="-fno-omit-frame-pointer -mno-omit-leaf-frame-pointer" pyenv install 3.12
pyenv shell 3.12
Run python with perf support turned on
Jeff Muizelaar jrmuizel
jrmuizel
/ gist:cc9d8d48fb79893f39b86f1488afdff2
Last active
May 23, 2025 12:40
iOS browser market share
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| { | |
| "success": true, | |
| "errors": [], | |
| "result": { | |
| "main": { | |
| "timestamps": [ | |
| "2025-03-10T00:00:00Z", | |
| "2025-03-17T00:00:00Z", | |
| "2025-03-24T00:00:00Z", | |
| "2025-03-31T00:00:00Z", |
jrmuizel
/ rust-flows.patch
Created
May 5, 2025 14:37
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| commit 815f5a4bd71cdd73dad134125dde89c8e6ec45bd | |
| Author: Jeff Muizelaar <[email protected]> | |
| Date: Fri Nov 15 10:38:17 2024 +0100 | |
| Rust flow | |
| diff --git a/netwerk/protocol/http/nsHttpTransaction.cpp b/netwerk/protocol/http/nsHttpTransaction.cpp | |
| index e6bba66b6fff9..ee6fc53401720 100644 | |
| --- a/netwerk/protocol/http/nsHttpTransaction.cpp | |
| +++ b/netwerk/protocol/http/nsHttpTransaction.cpp |
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| class StringWriter extends Writer { | |
| public StringWriter(Writer out) { | |
| this.out = out; | |
| } | |
| @Override | |
| public void write(char[] cbuf, int off, int len) throws IOException { | |
| for (int i = 0; i < len; i++) { | |
| char c = cbuf[i + off]; | |
| /* |
jrmuizel
/ profile.py
Created
April 30, 2025 15:13
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| import subprocess | |
| import os | |
| tests_with_workers = ["Air", "Basic", "ML", "Babylon", "cdjs", | |
| "first-inspector-code-load", "multi-inspector-code-load", | |
| "Box2D", "octane-code-load", "crypto", "delta-blue", | |
| "earley-boyer", "gbemu", "mandreel", "navier-stokes", | |
| "pdfjs", "raytrace", "regexp", "richards", "splay", | |
| "typescript", "octane-zlib", "FlightPlanner", "OfflineAssembler", | |
| "UniPoker", "async-fs", "float-mm.c", "hash-map", |
jrmuizel
/ gist:d8ff86d67e478c1ad7706f1679497fde
Created
April 4, 2025 02:50
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| ./dist/bin/libxul.so: file format elf64-little | |
| SYMBOL TABLE: | |
| 000000000886a8d0 l .data.rel.ro 0000000000000000 $d.2 | |
| 000000000886a8d0 l O .data.rel.ro 0000000000000008 .hidden __dso_handle | |
| 000000000886a8d8 l .data.rel.ro 0000000000000000 $d | |
| 000000000886aa40 l .data.rel.ro 0000000000000000 $d | |
| 000000000886b540 l .data.rel.ro 0000000000000000 $d | |
| 000000000886b610 l .data.rel.ro 0000000000000000 $d |
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| <!doctype html> | |
| <style> | |
| .child { | |
| position: absolute; | |
| left: 10px; | |
| width: 50px; | |
| height: 50px; | |
| background: lightblue; | |
| border: 1px solid black; |
jrmuizel
/ profiling-python-with-perf.md
Created
September 27, 2024 17:42
Profiling python with perf
jrmuizel
/ build.patch
Created
March 3, 2024 20:01
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| diff --git a/build/config/compiler/pgo/BUILD.gn b/build/config/compiler/pgo/BUILD.gn | |
| index f8293b2ef03f9..97e985cecc374 100644 | |
| --- a/build/config/compiler/pgo/BUILD.gn | |
| +++ b/build/config/compiler/pgo/BUILD.gn | |
| @@ -127,21 +127,21 @@ config("pgo_optimization_flags") { | |
| # and at least some profile data always ends up being considered | |
| # out of date, so make sure we don't error for those cases. | |
| "-Wno-profile-instr-unprofiled", | |
| "-Wno-profile-instr-out-of-date", | |
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| #include <assert.h> | |
| #include <bsm/audit.h> | |
| #include <bsm/audit_session.h> | |
| int main() { | |
| auditinfo_addr_t auditInfo; | |
| int result = getaudit_addr(&auditInfo, sizeof(auditInfo)); | |
| assert(result == 0 ); | |
| printf("got audit result: %d, uid %d\n", result, auditInfo.ai_auid); |
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| #include <assert.h> | |
| #include <bsm/audit.h> | |
| #include <bsm/audit_session.h> | |
| int main() { | |
| auditinfo_addr_t auditInfo; | |
| int result = getaudit_addr(&auditInfo, sizeof(auditInfo)); | |
| assert(result == 0 ); | |
| if (auditInfo.ai_flags & AU_SESSION_FLAG_IS_INITIAL) { |
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