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charset="us-ascii" Content-Disposition: inline hi, Jens Axboe, On Thu, Feb 01, 2024 at 06:40:07AM -0700, Jens Axboe wrote: > On 2/1/24 12:18 AM, Oliver Sang wrote: > > hi, Jens Axboe, > > > > On Wed, Jan 31, 2024 at 11:42:46AM -0700, Jens Axboe wrote: > >> On 1/31/24 11:17 AM, Bart Van Assche wrote: > >>> On 1/31/24 07:42, kernel test robot wrote: > >>>> kernel test robot noticed a -72.9% regression of fio.write_iops on: > >>>> > >>>> > >>>> commit: 574e7779cf583171acb5bf6365047bb0941b387c ("block/mq-deadline: use separate insertion lists") > >>>> https://git.kernel.org/cgit/linux/kernel/git/next/linux-next.git master > >>>> > >>>> testcase: fio-basic > >>>> test machine: 64 threads 2 sockets Intel(R) Xeon(R) Gold 6346 CPU @ 3.10GHz (Ice Lake) with 256G memory > >>>> parameters: > >>>> > >>>> runtime: 300s > >>>> disk: 1HDD > >>>> fs: xfs > >>>> nr_task: 100% > >>>> test_size: 128G > >>>> rw: write > >>>> bs: 4k > >>>> ioengine: io_uring > >>>> direct: direct > >>>> cpufreq_governor: performance > >>> > >>> The actual test is available in this file: > >>> https://download.01.org/0day-ci/archive/20240131/202401312320.a335db14-oliver.sang@intel.com/repro-script > >>> > >>> I haven't found anything in that file for disabling merging. Merging > >>> requests decreases IOPS. Does this perhaps mean that this test is > >>> broken? > >> > >> It's hard to know as nothing in this email or links include the actual > >> output of the job... > > > > I attached a dmesg and 2 outputs while running tests on 574e7779cf. > > not sure if they are helpful? > > Both fio outputs is all I need, but I only see one of them attached? while we running fio, there are below logs captured: fio fio.output fio.task fio.time I tar them in fio.tar.gz as attached. you can get them by 'tar xzvf fio.tar.gz' > > >> But if it's fio IOPS, then those are application side and don't > >> necessarily correlate to drive IOPS due to merging. Eg for fio iops, > >> if it does 4k sequential and we merge to 128k, then the fio perceived > >> iops will be 32 times larger than the device side. > >> > >> I'll take a look, but seems like there might be something there. By > >> inserting into the other list, the request is also not available for > >> merging. And the test in question does single IOs at the time. > > > > if you have any debug patch want us to run, please just let us know. > > it will be our great pleasure! > > Thanks, might take you up on that, probably won't have time for this > until next week however. > > -- > Jens Axboe > --j/JWyE4s/jnbj74X Content-Type: application/gzip Content-Disposition: attachment; filename="fio.tar.gz" Content-Transfer-Encoding: base64 H4sIAE6ju2UAA+1abY/bNhLO19WvEAwcmgBZL99FLuADDkUP6AHXBsj1vgSBIdtcr7KW5OplvXvX /e83pCxZr26b625SgAMEzs4zJIcPOcOhpJsoffXcgkCEYPYXMWx+CUak+huEU/YKM84FIfB/0GMk OH7lo2f3DKTMizDz/VeHw+FyExbhlN3ubv8S7ry0EETYJcKXFPlYXGN5TZmv17ep/82H7S5dhbuP 3ipfsDsvSnWyjRK9iNJlmUXJFjQbvS9uF5R4efQfvSCYBUxSwaSXZMubaKfzBfbsbw/eRJleFwBm ZVJEsV5QhLwouQ93ESyBNq3C3S5dm//v0zx6gLGW/U5Mx8tcZ/fRWi+Lx71eZGmZbLJ0FSVeFiab NF5uorzIolVZRGmyqHTeFsz2y0zv06ww09hnGv4KNwvkeR+KML9boo9edlgcsqjQR1fT7HFxdZNf 5ZsV9pIy/pQCKYJ94//i30Spf3mZlsW+LC5v0iwOi8WnPE38S+9Lr+1vEXB/Xjn/fGOcj3/MGcJ1 /GOCAoh/Yn5c/L+A/Nfz/ZnZw/c6yyFKZv61/fuSzimdvTWoiVAgKd4bDAewlBRLzLvYMs67MFGs sbCd/qvU/j/CxK8yDaHXlPsm+1SDVMnGT/cmVG1XxjMAVvaPGbuzdqCoE5FV18noBNqcZDFKaq1J HVZ1Sh81lGQ2QVkU18o6Z020qXJCt8kxk1UDI9T40yS13gh1frNqm+NOU1ieGXuQ9azdKfM1/gwT YGVp9bVVnfsshGagfLKrYfKb0X2wZtVKVOokPE6yypTHjswCmrQa2Z5Qo9RZlmY9VRH2FLtwn2vb kCL8tjXWcDdUUztYB2x+bsZvlgVStYXrdN22OGZuiws2OwJPzZg1Fa3BYDVWj0W1QdDbjv5uFFgd xhusDsMu9pXVvEqELai1m9rqIi3C3TJKB53nt3CYjQGwKfajDXZhsewzC/o4SnqmRhk+jCh1mIx7 b7ovNht9Pwn/YJFG89RybP21Ova1+gX7beiD1Q6cMNpwu53Yc6bJpIsGnXTQgDmcAbuxMNnnY/5V +qGHlX7aDYufI+to0fJmEOVV4pgO80AiigIhkJyK90AQhBWZiHoiEKJc4g5sAU6rQ7HlqtELyuSc U8RZG23lADhQUBBMJQKsEEes7ewfnQ4oHt3fggbgslJydJ8rySVBaE4DJZSY2O1U8IAIIucYYVzV FI3VD63JfU6uwJQgpcYcx4IrKYkUeNRziokQARV0LgimPJjwHQccQaEq2ZxLigSZdL4D7HW21rCy O933G0B83M8VNYxKhDvMgQlvmQB5SuL2rql6QS0bxaQSmMieDWnbQJUhmSKDsWjHSFElBReoZ8Ta RgRqeUIV6rvEO0YKAy1Dn0TbiBpygYF+T0HbiCGpGBOs75PsGAkIZsNCz0i1jThTjFNJ+sOpDt9I 4gDG7A+nVMso4AoLhYY9qTlvjCRlApwa+qTm6sQ43JOAAeB8xIqfrDgJAkhZIwMq1VhhSGiw7zFp GT19xkmHgSR6JqoYmsgHlBBO4JLHgCvj82RUCcWh6MVzxQLIL78vJZxOQyCY9YDKzUCRNqGtQ9EQ BiSxiVMR0jfEOgsEpLXRkxEHah7Ayga9k6F1GlFJeYu8zvkohRggR2ZNlE+dknB6iDmG4wjxvsmJ VcaATibbrA9OSuvb4LSE60PsamJXE4859rX65Wri31sT54/Juhflk4H1Va36YCZwwV+2UoXJi1Se 6tdZmWfL9b6sB+Cc4xYLeQujiFLaYOvioUqkWJKmIoT5fbrpTNDQcFPdEU79Hp9KLXf6Xu96NONq NNxfMzKhZxN6OaHHYgKg5HjmScVl50T860Kw9gIMOK7nk5erOCp6E0ITm5AdS5ohIida1K4PAEom gK7fnzOldWqiZHA/PDspW2gJuA39EXMarNPnzwkCVSfrx0GwzqbomxoJT02fTAF8CsBosq/JNnyy TXBuHPSbyCn/ZOTgSXL6SDDZpkUOPktOPEVOv8eaHCjy6Rg5hEiJ6Qg5WGGo+AfkkHkAekaH5ARw 2+Zw4R6SQ/GcBETwEXYYmTO4T7YvuDU92JT0CC6/o/wouLAEuON3Q51StP3EAuKxBZ7fdM1LCkoG WBFmW110D5Ua6z48GCbTxvAQJZv0cDorzTn50VjNNlF+tyyhCwP2nu83D/fzzer0ZN88FR/UAdVT tOYRFIIrCqfdJrGGiYy2OiHS3Dlkt10Rre9GmzUAp4IK3GoXJcufS13qGlSi5Uw9WSXmHAuiyIkR 7+lP8ZL2GcW8/zWvcp5zDLNDz33/wVjQ+v4DcIwFZu7970uI+8rjV7/y8EC+9DI9m9j4h8V5zjF+ Jf4xDUjv+w8s3PcfLyMX36ZxDCHjrzSEiW+2wsa8PYfp2n95tr7aZ+k2C+P8CjbLFQTzzLv4CULS Gvuvc71Ok03+xhRtQngX7x/zQscDEMu5oN7Fu6qC8dMb/9t3P/nFbZT75lX/Ni2gtvuLd/Fd9TmA //oAycFfQ364e3Ps7PY6jq/z3E8z3/xCp/zavGBS3sXf7nUWbrWf34YZNC70Q+GbVOK/rp5IvjGF UGNVJkc7s+Bn7GBrrO/O4PYRyQj+z/AhisvYzyAnbsxscz1wB3MMlcqpr3O2tstPMO3Xmf65jExe 9r+/+vGNvzctb8JyV+RQ5IJVlFRW610YxcYs9G9g6XTPFBOhwPzf6Q5Sc5g9+rBKFWeHqFjfajAh UJghQryL75P7M2YQqkD/+wMsmvXz75Cv/bzaAlGyL4uhuvrczLTlhCEqwZH3sMow7VjnObiZAwdJ Ydv1AZiZju7NFjVgtE3CXe5v9A502VH7zq6cJbDmjyEFTH/3EBVmSYvS+vSlI8+JEydOnDhx4sSJ EydOnDhx4sSJEydOnDhx4sSJEydOnDhx4sSJEydO/j/5H99OstUAUAAA --j/JWyE4s/jnbj74X--