roachtest: perturbation/full/backup failed

[cockroach-teamcity]

roachtest.perturbation/full/backup failed with artifacts on release-25.3.5-rc @ adc4b2ff64df47187d363c76db80a5ed4200aa35:

(assertions.go:369).Fail: 
	Error Trace:	pkg/cmd/roachtest/tests/perturbation/framework.go:715
	            				pkg/cmd/roachtest/test_runner.go:1389
	            				src/runtime/asm_amd64.s:1700
	Error:      	Should be true
	Test:       	perturbation/full/backup
	Messages:   	FAILURE: follower-read  : Increase 5.3793 > 5.0000 BASE: 5.084933ms SCORE: 27.353324ms
(require.go:2014).True: FailNow called
test artifacts and logs in: /artifacts/perturbation/full/backup/run_1

Parameters:

• acMode=defaultOption
• arch=amd64
• blockSize=4096
• cloud=gce
• coverageBuild=false
• cpu=16
• diskBandwidthLimit=0
• disks=2
• encrypted=false
• fillDuration=10m0s
• fs=ext4
• leaseType=epoch
• localSSD=true
• mem=standard
• numNodes=12
• numWorkloadNodes=1
• perturbationDuration=10m0s
• ratioOfMax=0.5
• runtimeAssertionsBuild=false
• seed=0
• splits=10000
• ssd=2
• validationDuration=5m0s
• vcpu=16

Help

See: roachtest README

See: How To Investigate (internal)

See: Grafana

Same failure on other branches

• roachtest: perturbation/full/backup failed #155108 roachtest: perturbation/full/backup failed [A-testing C-bug C-investigation C-test-failure O-roachtest O-robot P-3 T-kv branch-release-25.4]
• roachtest: perturbation/full/backup failed #151594 roachtest: perturbation/full/backup failed [A-testing C-bug C-test-failure O-perturbation O-roachtest O-robot P-3 T-kv branch-release-25.3]

/cc @cockroachdb/kv-triage

This test on roachdash | Improve this report!

Jira issue: CRDB-56162

[pav-kv]

FAILURE: follower-read  : Increase 5.3793 > 5.0000 BASE: 5.084933ms SCORE: 27.353324ms

Small increase, likely a benign flake. Leaving open, as other perturbation tests.