25.03.2019 17:56, Kevin Wolf wrote: > Am 25.01.2019 um 15:36 hat Vladimir Sementsov-Ogievskiy geschrieben: >> 25.01.2019 17:21, Vladimir Sementsov-Ogievskiy wrote: >>> Results on tmpfs: >>> cached is lseek cache by Kevin >>> detect is this patch >>> no lseek is just remove block_status query on bs->file->bs in >>> bdrv_co_block_status >>> >>> +---------------------+--------+--------+--------+----------+ >>> | | master | cached | detect | no lseek | >>> +---------------------+--------+--------+--------+----------+ >>> | test.qcow2 | 80 | 40 | 0.169 | 0.162 | >>> +---------------------+--------+--------+--------+----------+ >>> | test_forward.qcow2 | 79 | 0.171 | 0.169 | 0.163 | >>> +---------------------+--------+--------+--------+----------+ >>> | test_prealloc.qcow2 | 0.054 | 0.053 | 0.055 | 0.263 | >>> +---------------------+--------+--------+--------+----------+ >> >> Forgot to say, tests by Kevin from branch >> https://lists.gnu.org/archive/html/qemu-devel/2019-01/msg05463.html >> >> Hmm. Don't we have something like tests/qemu-iotests, but for performance? >> So, all these small pretty tests we have in mailing list may go as git >> patches? > > Sounds like a good idea. Maybe we can just create a new subdirectory > qemu-iotests/perf/ and put some benchmark scripts there? > > Of course, they wouldn't be able to tell PASS/FAIL like normal > qemu-iotests and so they wouldn't be integrated into the normal > qemu-iotests suite, but just return numbers that can be compared with > different setups or revisions on the same machine. >
I found a framework which can print nice ASCII comparison tables for performance, it's pip package named perf (https://pypi.org/project/perf/). But the problem with it, that in RHEL there is rpm package which conflicts with this name: python-perf, which do absolutely another thing.. So, to install pip install perf, you should first yum remove python-perf.. -- Best regards, Vladimir
