You can take the same source code package that Ubuntu uses to build jq, compile it again, and realize 90% better performance.
I use jq for processing GeoJSON files and other open data offered in JSON format. Today I am working with a 500MB GeoJSON file that contains the Alameda County Assessor's parcel map. I want to run a query that prints the city for every parcel worth more than a threshold amount. The program is
I found a non-OEM electronic gadget in my car. It is wired into the ignition, and contains a 435.10 MHz radio reciever, a microcontroller, and two relays. I suspect it might be a device that allows third parties to unlock the doors and start the car with a radio.
I was driving my 2020 Honda Insight EX when it started to make the annoying sound of an electromechanical relay rapidly switching on and off. When I got home I looked under the dash and straight away I could see someone other than Honda had been in here. The first thing I saw was this surface-mounted switch that doesn't belong there.
| 0000000000000000 <absl::str_format_internal::Summarize[abi:cxx11](absl::str_format_internal::UntypedFormatSpecImpl, absl::Span<absl::str_format_internal::FormatArgImpl const>)>: | |
| 0: f3 0f 1e fa endbr64 | |
| 4: 55 push %rbp | |
| 5: 48 89 e5 mov %rsp,%rbp | |
| 8: 41 57 push %r15 | |
| a: 41 56 push %r14 | |
| c: 41 55 push %r13 | |
| e: 49 89 f5 mov %rsi,%r13 | |
| 11: 41 54 push %r12 | |
| 13: 53 push %rbx |
| /* result */ | |
| $ go test -test.bench=. -test.cpu=1,2,4,8 -test.benchtime=10s . | |
| goos: linux | |
| goarch: amd64 | |
| BenchmarkAdd 1000000000 6.97 ns/op | |
| BenchmarkAdd-2 532704848 21.1 ns/op | |
| BenchmarkAdd-4 675975466 17.8 ns/op | |
| BenchmarkAdd-8 767997027 15.7 ns/op | |
| BenchmarkCASPause 1000000000 8.92 ns/op | |
| BenchmarkCASPause-2 1000000000 8.92 ns/op |
