The script 'bench_write_req.py' allows comparing performances of write request for two qemu-img binary files. If you made a change in QEMU code and want to check the write requests performance, you will want to build two qemu-img binary files with and without your change. Then you specify paths to those binary files and put them as parameters to the bench_write_req.py script. You may see other supported parameters in the USAGE help.
v4: 01: 'if/else requests' blocks moved from patch 0001 to 0003. v3: Based on the Vladimir's review 01: The test results were amended in the patch description. 02: The python format string syntax changed to the newer one f''. 03: The 'empty_disk' test parameter fixed to True. 04: The function bench_write_req() was supplied with commentary. 05: The subprocess.call() was replaced with subprocess.run(). 06: The exception handling was improved. 07: The v2 only patch was split into three in the series. Andrey Shinkevich (3): scripts/simplebench: compare write request performance scripts/simplebench: allow writing to non-empty image scripts/simplebench: add unaligned data case to bench_write_req scripts/simplebench/bench_write_req.py | 206 +++++++++++++++++++++++++++++++++ 1 file changed, 206 insertions(+) create mode 100755 scripts/simplebench/bench_write_req.py -- 1.8.3.1
