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Type: Bug
Resolution: Fixed
Priority: Critical
Fix Version/s: 7.6.0
Affects Version/s: 7.6.0
Component/s: couchbase-bucket
Labels:
- approved-for-trinity
- performance

Triage:
Triaged
Story Points:
0
Is this a Regression?:
Yes
Sprint:
March-June 24

Description

Recent Trinity builds (7.6.1-3049):

https://perf.jenkins.couchbase.com/job/sg_hebe_sgreplicate_multicluster/2842/console (connection_manager_interval=0.1) -> 68576 ops/s
https://perf.jenkins.couchbase.com/job/sg_hebe_sgreplicate_multicluster/2843/console (connection_manager_interval=1.0) -> 79048 ops/s

Caused by https://review.couchbase.org/c/kv_engine/+/195728 (MB-56973, build 7.6.0-1453), which was introduced to support the fast failover functionality.

Note
I'm using https://cb-engineering.s3.amazonaws.com/MB-60525/ for uploading perf files from live runs profiling.

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trace.out.regr
66.64 MB
30/Jan/24 8:06 AM
trace.regr.png
109 kB
30/Jan/24 8:08 AM
trace-connslock.tgz
20.06 MB
02/Feb/24 8:07 AM

Issue Links

causes

MB-60795 Memcached stuck on shutdown, waiting for clients to disconnect

Closed

is triggered by

CBG-3777 [3.1.4 backport] kv_pool_size on import feed can be non zero

Resolved

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Assignee:: Dragos Taraban

Reporter:: Paolo Cocchi

Votes:: 0 Vote for this issue

Watchers:: 10 Start watching this issue

Dates

Due:: 09/Feb/24

Created:: 24/Jan/24 2:51 AM

Updated:: 15/Feb/24 9:18 AM

Resolved:: 08/Feb/24 6:59 AM

Gerrit Reviews

There is 1 open Gerrit change

[Toybuild] Revert "MB-60525 [3/3]: Don't cleanup connections every ConnManager::run"

+1 Gerrit Review:

Show There are 17 closed Gerrit changes

Hide There are 17 closed Gerrit changes

MB-60525: Use '_' in place of ":" for dcpdrain connection names: Gerrit Review:

MB-60525: [Toy] Set min connection_manager_interval to 0.0001: Gerrit Review:

MB-60525: Don't acquire connLock in DcpConnMap::isConnections: Gerrit Review:

MB-60525: Don't acquire connLock in DcpConnMap::addPassiveStream: Gerrit Review:

MB-60525: Don't acquire connLock in DcpConnMap::vbucketStateChanged: Gerrit Review:

MB-60525: Fix comments on DcpConnMap::connsLock: Gerrit Review:

MB-60525: Turn DcpConnMap::deadConnections into folly::Synchronized<T>: Gerrit Review:

MB-60525: ::deadConnections lock and ConnStore lock not nested: Gerrit Review:

MB-60525: Minimize deadConnections lock scope in ::manageConnections(): Gerrit Review:

MB-60525: Trace - Focus on ConnStore::handle: Gerrit Review:

Merge branch 'couchbase/trinity' into 'couchbase/master': Gerrit Review:

Merge trinity/169a91f64 into master: Gerrit Review:

MB-60525 [2/3]: Introduce the connection_cleanup_interval config. param.: Gerrit Review:

MB-60525 [3/3]: Don't cleanup connections every ConnManager::run: Gerrit Review:

MB-60525 [1/3]: Declare ConnManager in a header file: Gerrit Review:

Merge branch 'trinity' into 'master': Gerrit Review:

MB-60795: Use the steady clock to run manageConnections(): Gerrit Review:

Frontend throughput regression caused by connection_manager_interval=0.1

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