Bug 678279
| Summary: | Perf: Add an index on rhq_resource (inventory_status) | ||
|---|---|---|---|
| Product: | [Other] RHQ Project | Reporter: | Heiko W. Rupp <hrupp> |
| Component: | Database | Assignee: | Nobody <nobody> |
| Status: | NEW --- | QA Contact: | |
| Severity: | medium | Docs Contact: | |
| Priority: | low | ||
| Version: | 4.0.0 | CC: | jshaughn, rbuck |
| Target Milestone: | --- | ||
| Target Release: | --- | ||
| Hardware: | Unspecified | ||
| OS: | Unspecified | ||
| Whiteboard: | |||
| Fixed In Version: | Doc Type: | Bug Fix | |
| Doc Text: | Story Points: | --- | |
| Clone Of: | Environment: | ||
| Last Closed: | Type: | --- | |
| Regression: | --- | Mount Type: | --- |
| Documentation: | --- | CRM: | |
| Verified Versions: | Category: | --- | |
| oVirt Team: | --- | RHEL 7.3 requirements from Atomic Host: | |
| Cloudforms Team: | --- | Target Upstream Version: | |
| Embargoed: | |||
| Bug Depends On: | |||
| Bug Blocks: | 620933 | ||
Given the low cardinality of the field would this index really be helpful or would the index just add overhead to insert/deletes on resources? Heiko, Are there particular queries you know are slow because of no index here? We need more justification for adding this. I don't recall. Original idea came from observations in OracleEM. |
After more digging into the sources and queries, I propose to add an index like this: CREATE INDEX "RHQ_RES_I_STAT_IDX" ON "RHQ_RESOURCE" ("INVENTORY_STATUS") TABLESPACE "USERS" PCTFREE 10 INITRANS 2 MAXTRANS 255 STORAGE ( INITIAL 64K BUFFER_POOL DEFAULT) NOLOGGING LOCAL While it may not help a lot on this specific query, there is a large number of queries in the system that uses the inventory_status column. ----- In the longer run, it may make sense to turn the column into something integer based.