Bug 1859167

Summary: [RGW][Notification] when notifications are enabled latency is going up
Product: [Red Hat Storage] Red Hat Ceph Storage Reporter: Yuval Lifshitz <ylifshit>
Component: RGWAssignee: Yuval Lifshitz <ylifshit>
Status: CLOSED DUPLICATE QA Contact: Tejas <tchandra>
Severity: medium Docs Contact:
Priority: unspecified    
Version: 5.0CC: cbodley, ceph-eng-bugs, kbader, mbenjamin, sweil, vereddy
Target Milestone: z1Keywords: Performance
Target Release: 5.0   
Hardware: Unspecified   
OS: Unspecified   
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Last Closed: 2020-09-13 13:04:30 UTC Type: Bug
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Description Yuval Lifshitz 2020-07-21 11:32:57 UTC 
Scenario:
- Copying 20 images from one bucket another  (basic s3 "copy" command), between 150kB and 250kB each.

Timings when copying to a bucket without notifications:
- Copying: 1.4 s ± 7.27 ms  (I'm timing it through several loops to get some stats, so we can see it's pretty much homogeneous)

Timings when copying to a bucket with notifications enabled (standard notifications to Kafka, without filters or anything):
- Copying: 9.51 s ± 34.9 ms

the latency is due to the fact that the latency towards the notification endpoint is added to the S3 latency.
Comment 1 RHEL Program Management 2020-07-21 11:33:03 UTC 
Please specify the severity of this bug. Severity is defined here:
https://bugzilla.redhat.com/page.cgi?id=fields.html#bug_severity.
Comment 2 Yuval Lifshitz 2020-09-13 13:04:30 UTC 

*** This bug has been marked as a duplicate of bug 1873881 ***