[Libguestfs] [PATCH libnbd v2 1/9] golang: tests: Add test for AioBuffer

[Eric Blake]

On Fri, Feb 11, 2022 at 03:21:21AM +0200, Nir Soffer wrote:
> Add unit tests and benchmarks for AioBuffer. The tests are trivial but
> they server as running documentation, and they point out important

serve

> details about the type.
> 
> The benchmarks show the efficiency of allocating a new buffer, zeroing
> it, and interfacing with Go code.
> 
> These tests will also ensure that we don't break anything by the next
> changes.
> 
> To run the benchmarks use:
> 
> $ go test -run=xxx -bench=.
> goos: linux
> goarch: amd64
> pkg: libguestfs.org/libnbd
> cpu: Intel(R) Core(TM) i7-10850H CPU @ 2.70GHz
> BenchmarkMakeAioBuffer-12     	 6871759	       157.2 ns/op
> BenchmarkAioBufferZero-12     	   17551	     69552 ns/op
> BenchmarkFromBytes-12         	    9632	    139112 ns/op
> BenchmarkAioBufferBytes-12    	   69375	     16410 ns/op
> PASS
> ok  	libguestfs.org/libnbd	5.843s
> 
> To make sure the benchmarks will not break, we run them in "make check"
> with a very short timeout. For actual performance testing run "go test"
> directly.

Sounds good to me.

-- 
Eric Blake, Principal Software Engineer
Red Hat, Inc.           +1-919-301-3266
Virtualization:  qemu.org | libvirt.org