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diff --git a/docs/proposal/storage-qpi.rst b/docs/proposal/storage-qpi.rst deleted file mode 100644 index 8a82241e..00000000 --- a/docs/proposal/storage-qpi.rst +++ /dev/null @@ -1,112 +0,0 @@ -.. This work is licensed under a Creative Commons Attribution 4.0 International License. -.. http://creativecommons.org/licenses/by/4.0 -.. (c) 2017 ZTE Corp. - - -*********** -Storage QPI -*********** - -The storage QPI gives user an overall score for storage performance. - -The measurement is done by `StorPerf`_. - -.. _StorPerf: https://wiki.opnfv.org/display/storperf - -System Information -================== - -System Information are environmental parameters and factors may affect storage performance: - -+--------------------------------+-------------------------------------------------+-----------------------------------------------------------------------------+ -| System Factors | Detail | Extraction Method | -+--------------------------------+-------------------------------------------------+-----------------------------------------------------------------------------+ -| Ceph Node List | List of nodes which has ceph-osd roles. | Getting from return result of installer node list CLI command. | -| | For example [node-2, node-3, node-4]. | | -+--------------------------------+-------------------------------------------------+-----------------------------------------------------------------------------+ -| Ceph Client RDB Cache Mode | Values: "None", "write-through", "write-back". | Getting from value of "rbd cache" and "rbd cache max dirty" keys | -| | | in client section of ceph configuration; To enable write-through mode, | -| | | set rbd cache max dirty to 0. | -+--------------------------------+-------------------------------------------------+-----------------------------------------------------------------------------+ -| Ceph Client RDB Cache Size | The RBD cache size in bytes. Default is 32 MiB. | Getting from value of "rdb cache size" key in client section | -| | | of ceph configuration. | -+--------------------------------+-------------------------------------------------+-----------------------------------------------------------------------------+ -| Ceph OSD Tier Cache Mode | Values: "None", "Write-back", "Readonly". | Getting from ceph CLI "ceph report" output info. | -+--------------------------------+-------------------------------------------------+-----------------------------------------------------------------------------+ -| Use SSD Backed OSD Cache | Values: "Yes", "No". | Getting from POD description and CEPH CLI "ceph-disk list" output info. | -+--------------------------------+-------------------------------------------------+-----------------------------------------------------------------------------+ -| Use SSD For Journal | Values: "Yes", "No". | Getting from POD description and CEPH CLI "ceph-disk list" output info. | -+--------------------------------+-------------------------------------------------+-----------------------------------------------------------------------------+ -| Ceph Cluster Network Bandwidth | Values: "1G", "10G", "40G". | Getting from physical interface information in POD description, | -| | | "ifconfig" output info on ceph osd node, | -| | | and value of "cluster network" key in global section of ceph configuration. | -+--------------------------------+-------------------------------------------------+-----------------------------------------------------------------------------+ - -Test Condition -============== - -+-----------------------------+------------------------------------------+-------------------------------------------------------------+ -| Test Condition | Detail | Extraction Method | -+-----------------------------+------------------------------------------+-------------------------------------------------------------+ -| Number of Testing VMs | Number of VMs which are created, | It equals the number of Cinder nodes of the SUT. | -| | during running Storperf test case. | | -+-----------------------------+------------------------------------------+-------------------------------------------------------------+ -| Distribution of Testing VMS | Number of VMs on each computer node, | Recording the distribution when runing Storperf test case. | -| | for example [(node-2: 1), (node-3: 2))]. | | -+-----------------------------+------------------------------------------+-------------------------------------------------------------+ - -Baseline -======== - -Baseline is established by testing with a set of work loads: - -- `Queue depth`_ (1, 2, 8) -- `Block size`_ (2KB, 8KB, 16KB) -- `Read write`_ - - sequential read - - sequential write - - random read - - random write - - random mixed read write 70/30 - -.. _Queue depth: http://fio.readthedocs.io/en/latest/fio_man.html#cmdoption-arg-iodepth -.. _Block size: http://fio.readthedocs.io/en/latest/fio_man.html#cmdoption-arg-blocksize -.. _Read write: http://fio.readthedocs.io/en/latest/fio_man.html#cmdoption-arg-readwrite - -Metrics -======= - -- Throughput: data transfer rate -- IOPS: I/O operations per second -- Latency: response time - -Workload Scores -=============== - -For each test run, if an equivalent work load in baseline is available, a score will be calculated by comparing the -result to baseline. - -Section Scores -============== - -+-----------------+--------------------------------------------------------+-----------------------------------------+ -| Section | Detail | Indication | -+=================+========================================================+=========================================+ -| IOPS | Read write I/O Operation per second under steady state | Important for frequent storage access | -| | Workloads : random read/write | such as event sinks | -+-----------------+--------------------------------------------------------+-----------------------------------------+ -| Throughput | Read write data transfer rate under steady state | Important for high throughput services | -| | Workloads: sequential read/write, block size 16KB | such as video server | -+-----------------+--------------------------------------------------------+-----------------------------------------+ -| Latency | Average response latency under steady state | Important for real time applications | -| | Workloads: all | | -+-----------------+--------------------------------------------------------+-----------------------------------------+ - -Section score is the `geometric mean <https://en.wikipedia.org/wiki/Geometric_mean>`_ of all -workload score. - -Storage QPI -=========== - -Storage QPI is the `weighted arithmetic mean <https://en.wikipedia.org/wiki/Weighted_arithmetic_mean>`_ of all section -scores. |