[ZBXNEXT-6280] Add trend function cache Created: 2020 Oct 20  Updated: 2024 Apr 10  Resolved: 2020 Nov 23

Status: Closed
Project: ZABBIX FEATURE REQUESTS
Component/s: Server (S)
Affects Version/s: 5.2.0beta2
Fix Version/s: 5.4.0alpha1, 5.4 (plan)

Type: New Feature Request Priority: Trivial
Reporter: Andris Zeila Assignee: Andris Zeila
Resolution: Fixed Votes: 0
Labels: None
Remaining Estimate: Not Specified
Time Spent: Not Specified
Original Estimate: Not Specified

Issue Links:
Causes
caused by ZBXNEXT-6140 New set of trigger functions for long... Closed
Team: Team A
Sprint: Sprint 69 (Oct 2020), Sprint 70 (Nov 2020)
Story Points: 2

 Description   

Trend based trigger functions (trendavg, trendsum etc) always uses database queries to obtain required data. Normally triggers with trend functions are not evaluated often.
However when trigger contains trend functions mixed with history or timer based functions it might result in noticeable database server load increase. To reduce it trend function cache must be added.

 Comments   
Comment by Vladislavs Sokurenko [ 2020 Nov 12 ]

Implemented in:

  • pre-5.4.0alpha1 (master) c49975bc950

Updated documentation:

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