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Bug 2304750

Summary:	[IBM Support] ListObjectV2 p90 latency experienced
Product:	[Red Hat Storage] Red Hat Ceph Storage	Reporter:	Mike Hackett <mhackett>
Component:	RGW	Assignee:	Matt Benjamin (redhat) <mbenjamin>
Status:	CLOSED NOTABUG	QA Contact:	Madhavi Kasturi <mkasturi>
Severity:	high	Docs Contact:
Priority:	unspecified
Version:	7.1	CC:	ceph-eng-bugs, cephqe-warriors, ckulal, vumrao
Target Milestone:	---
Target Release:	8.1
Hardware:	Unspecified
OS:	Unspecified
Whiteboard:
Fixed In Version:		Doc Type:	If docs needed, set a value
Doc Text:		Story Points:	---
Clone Of:
Clones:	2307146 (view as bug list)		Environment:
Last Closed:	2025-04-08 21:20:58 UTC	Type:	Bug
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:	2307146

Description Mike Hackett 2024-08-13 21:43:02 UTC

Description of problem:
We are seeing some increased latency with ListObjectV2 p90 of about 4.3 seconds with 200k objects in a bucket. 

My belief here is that we may be seeing listing latency due to shard count of the bucket being 4999 and only having 200k objects in the bucket as each listing operation will need to go through and check each each shard.

I would like to confirm this is the case and we are not missing anything. 

Version-Release number of selected component (if applicable):
18.2.1-229

How reproducible:
Consistent

Steps to Reproduce:
1.Create bucket with 4999 shards
2. Populate with 200k objects
3.ListObjectV2 on bucket 

Actual results:
Takes about 4 seconds 

Expected results:
Should be faster per customer

Additional info: