[SERVER-64964] Measure egress connection creation time from connection pools Created: 25/Mar/22 Updated: 29/Oct/23 Resolved: 16/Aug/22 |
|
| Status: | Closed |
| Project: | Core Server |
| Component/s: | None |
| Affects Version/s: | None |
| Fix Version/s: | 6.1.0-rc0 |
| Type: | Task | Priority: | Major - P3 |
| Reporter: | George Wangensteen | Assignee: | Vojislav Stojkovic |
| Resolution: | Fixed | Votes: | 0 |
| Labels: | RDY | ||
| Remaining Estimate: | Not Specified | ||
| Time Spent: | Not Specified | ||
| Original Estimate: | Not Specified | ||
| Issue Links: |
|
||||||||||||||||||||
| Backwards Compatibility: | Fully Compatible | ||||||||||||||||||||
| Sprint: | Service Arch 2022-04-04, Service Arch 2022-04-18, Service Arch 2022-05-02, Service Arch 2022-05-16, Service Arch 2022-05-30, Service Arch 2022-06-13, Service Arch 2022-06-27, Service Arch 2022-07-11, Service Arch 2022-07-25, Service Arch 2022-08-08, Service Arch 2022-08-22 | ||||||||||||||||||||
| Participants: | |||||||||||||||||||||
| Linked BF Score: | 42 | ||||||||||||||||||||
| Description |
|
Mongos (and mongod) maintain connection pools wrapped by task executors. These pooled connections are used to perform RPC. Sometimes, these RPC operations come in 'bursts' and no pre-existing pooled connections are available to serve some operations. In these cases, operations are bottlenecked behind new-connection-establishment. We'd like to understand how much time is spent establishing new connections to better understand this potential bottleneck. Let's create a measurement of wall-time for this new-connection establishment. Ideally, it would also be good to include partial measurements for each step of the connection establishment, including:
Including parts of the detailed breakdown, especially MongoDB auth, may be better suited to break-out into separate tickets after some investigation. |
| Comments |
| Comment by Billy Donahue [ 16/Aug/22 ] |
|
Follow-up patch commited as Message: |
| Comment by Githook User [ 11/Aug/22 ] |
|
Author: {'name': 'Vojislav Stojkovic', 'email': 'vojislav.stojkovic@mongodb.com', 'username': 'vstojkovic-mongodb'}Message: |
| Comment by Bruce Lucas (Inactive) [ 28/Mar/22 ] |
|
Will these be cumulative times? This can then be used by tooling to chart 1) average times over any time interval, and 2) average number of threads performing each step over any time interval. |