Expert Oracle Exadata - Parent Directory

CHAPTER 5 EXADATA SMART FLASH CACHEMetricFC_IO_RQ_R_SKIPFC_IO_RQ_R_SKIP_SECFC_IO_RQ_WFC_IO_RQ_W_SECDescriptionNumber of read IO requests with a hint to bypass flash cacheNumber of read IO requests per second with a hint to bypass flash cacheNumber of IO requests that resulted in flash cache being populated with dataNumber of IO requests per second that resulted in flash cache beingpopulated with dataThe metrics in Table 5-1 are cumulative since cellsrv was started. The LIST METRICCURRENTcommand shows the current values of the metrics for a single storage cell. Following are examples of acouple of cellcli commands showing first all flash cache-related metrics and then only the flash cachemetrics that are related to objects designated for aggressive caching (that is, objects whose storageclause specifies CELL_FLASH_CACHE=KEEP).CellCLI> LIST METRICCURRENT WHERE objectType = 'FLASHCACHE'FC_BYKEEP_OVERWR FLASHCACHE 0.0 MBFC_BYKEEP_OVERWR_SEC FLASHCACHE 0.0 MB/secFC_BYKEEP_USED FLASHCACHE 5,072 MBFC_BY_USED FLASHCACHE 5,434 MBFC_IO_BYKEEP_R FLASHCACHE 80,288 MBFC_IO_BYKEEP_R_SEC FLASHCACHE 0.0 MB/secFC_IO_BYKEEP_W FLASHCACHE 11,134 MBFC_IO_BYKEEP_W_SEC FLASHCACHE 0.0 MB/secFC_IO_BY_R FLASHCACHE 3,512,908 MBFC_IO_BY_R_MISS FLASHCACHE 944,942 MBFC_IO_BY_R_MISS_SEC FLASHCACHE 0.0 MB/secFC_IO_BY_R_SEC FLASHCACHE 0.0 MB/secFC_IO_BY_R_SKIP FLASHCACHE 11,224,781 MBFC_IO_BY_R_SKIP_SEC FLASHCACHE 0.3 MB/secFC_IO_BY_W FLASHCACHE 3,547,430 MBFC_IO_BY_W_SEC FLASHCACHE 0.4 MB/secFC_IO_ERRS FLASHCACHE 0FC_IO_RQKEEP_R FLASHCACHE 91,231 IO requestsFC_IO_RQKEEP_R_MISS FLASHCACHE 11,155 IO requestsFC_IO_RQKEEP_R_MISS_SEC FLASHCACHE 0.0 IO/secFC_IO_RQKEEP_R_SEC FLASHCACHE 0.0 IO/secFC_IO_RQKEEP_R_SKIP FLASHCACHE 1,532 IO requestsFC_IO_RQKEEP_R_SKIP_SEC FLASHCACHE 0.0 IO/secFC_IO_RQKEEP_W FLASHCACHE 17,794 IO requestsFC_IO_RQKEEP_W_SEC FLASHCACHE 0.0 IO/secFC_IO_RQ_R FLASHCACHE 420,546,099 IO requestsFC_IO_RQ_R_MISS FLASHCACHE 28,959,907 IO requestsFC_IO_RQ_R_MISS_SEC FLASHCACHE 0.0 IO/secFC_IO_RQ_R_SEC FLASHCACHE 0.0 IO/secFC_IO_RQ_R_SKIP FLASHCACHE 80,970,122 IO requestsFC_IO_RQ_R_SKIP_SEC FLASHCACHE 25.4 IO/sec137