From d38fc83df3824b840f0b3930e4cb7236bdab84b2 Mon Sep 17 00:00:00 2001 From: a73x Date: Tue, 27 Aug 2024 19:43:56 +0100 Subject: feat(content): support templating in content this is tired person code don't write tired person code --- content/posts/001.md | 36 ++++++++++++++++++++++++++++++++++++ 1 file changed, 36 insertions(+) create mode 100644 content/posts/001.md (limited to 'content/posts/001.md') diff --git a/content/posts/001.md b/content/posts/001.md new file mode 100644 index 0000000..48ea720 --- /dev/null +++ b/content/posts/001.md @@ -0,0 +1,36 @@ +--- +title: "Go Benchmarking" +tags: posts +--- +1. write a benchmark +2. run a benchmark +3. get a profile +4. optimise +5. run your tests +6. goto 2. + +## cpuprofile +`go test -test=XXX -bench -cpuprofile ` + +## memprofile +`go test -test=XXX -bench -memprofile -benchmem` + +## pprof +[pprof usage](https://github.com/google/pprof/blob/main/doc/README.md) + +`go pprof -http=:8080 profile.pb.gz` +will show a web UI for analysing the profile. + +### views: +- flame graph: `localhost:8080/ui/flamegraph` + - shows percentage breakdown of how much resource each "call" made. + - clicking a box will make it "100%" allowing for deep diving + - right click "show source code" to view +- top: `localhost:8080/ui/top` + - shows top functions + - `flat`: profile samples in this function + - `cum`: (cumulative) profile samples in this function and its callees +- source: `localhost:8080/ui/source` + - each source line is annotated with the time spent in that source line + - the first number does not count time spent in functions called from the source line + - the second number does \ No newline at end of file -- cgit v1.2.3