Description of problem (please be detailed as possible and provide log snippests): when running Random I/O on RBD volume i see performance degradation of ~80% with 1M block size compared to OCS 4.6.0 as you can see in the document : https://docs.google.com/document/d/1_-XI4qOTM-nwhV_1T0KII2RKP51CJLZ59KiS5U-Xqyo/edit?ts=60911d54#heading=h.kmewff7hkh3z I ran this test several times, and the results was the same. Hardware Environment AWS with 3 master and 3 Workers (m5.4xl) and 3 x 2TiB OSD's (EBS) Version of all relevant components (if applicable): OCS 4.7 Does this issue impact your ability to continue to work with the product (please explain in detail what is the user impact)? No Is there any workaround available to the best of your knowledge? No Rate from 1 - 5 the complexity of the scenario you performed that caused this bug (1 - very simple, 5 - very complex)? 1 Can this issue reproducible? Yes Can this issue reproduce from the UI? If this is a regression, please provide more details to justify this: Yes, on OCS 4.6.0 we saw better results Steps to Reproduce: 1. deploy OCS 4.7 on AWS with 2TiB OSD 2. run from OCS-CI the test : tests/e2e/performance/test_fio_benchmark.py::TestFIOBenchmark::test_fio_workload_simple[CephBlockPool-random] 3. Actual results: Degradation as seen in the document : https://docs.google.com/document/d/1_-XI4qOTM-nwhV_1T0KII2RKP51CJLZ59KiS5U-Xqyo/edit?ts=60911d54#heading=h.kmewff7hkh3z Expected results: No Degradation in the performance Additional info:
No investigations yet, can't be a part of 4.2z2. Moving it out of 4.8
I don't see any investigations on this, and the last results were on 4.7 Is there a possibility to retest this on the latest builds?
This bug can be closed. the results we see for 4.6 and 4.8 are the same for the random workload on 1024Ki blocksize. please see, https://docs.google.com/document/d/1-lOb4szqLM4LoWnMr_JCp9zurBqpjeva5BUEH-yer4s/edit#heading=h.w4cb5hofz7uj https://docs.google.com/document/d/1_-XI4qOTM-nwhV_1T0KII2RKP51CJLZ59KiS5U-Xqyo/edit#heading=h.kmewff7hkh3z