release-26.3: roachtest: tpcc/multiregion/survive=zone/chaos=true failed

roachtest.tpcc/multiregion/survive=zone/chaos=true [failed](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyGcePrivateBazel/21495766?buildTab=log) with [artifacts](https://teamcity.cockroachdb.com/buildConfiguration/Cockroach_Nightlies_Roachtests_RoachtestNightlyGcePrivateBazel/21495766?buildTab=artifacts#/tpcc/multiregion/survive=zone/chaos=true) on release-26.3 @ [703f5245358cf18917f2f0ea8be3048ec220d7aa](https://github.com/cockroachdb/cockroach/commits/703f5245358cf18917f2f0ea8be3048ec220d7aa):

Failed with:

```
(tpcc.go:581).runTPCC: error detected during DRT: error at from 2026-09-02T16:37:57Z, to 2026-09-02T16:41:39Z on metric workload_tpcc_newOrder_error_total{instance="10.91.99.103:2110"}: expected <=1000 errors, found from 11159006.000000, to 11160512.000000
test artifacts and logs in: /artifacts/tpcc/multiregion/survive=zone/chaos=true/cpu_arch=arm64/run_1
```
Cluster Node to Ip Mapping:
| Node | Public IP | Private IP |
| --- | --- | --- |
| teamcity-21495766-1788328822-206-n10cpu4-geo-0001 | | 10.91.96.228 |
| teamcity-21495766-1788328822-206-n10cpu4-geo-0002 | | 10.91.96.135 |
| teamcity-21495766-1788328822-206-n10cpu4-geo-0003 | | 10.91.96.43 |
| teamcity-21495766-1788328822-206-n10cpu4-geo-0004 | | 10.91.128.114 |
| teamcity-21495766-1788328822-206-n10cpu4-geo-0005 | | 10.91.128.115 |
| teamcity-21495766-1788328822-206-n10cpu4-geo-0006 | | 10.91.128.113 |
| teamcity-21495766-1788328822-206-n10cpu4-geo-0007 | | 10.91.48.13 |
| teamcity-21495766-1788328822-206-n10cpu4-geo-0008 | | 10.91.48.15 |
| teamcity-21495766-1788328822-206-n10cpu4-geo-0009 | | 10.91.48.66 |
| teamcity-21495766-1788328822-206-n10cpu4-geo-0010 | | 10.91.99.103 |

Parameters:
- arch=arm64
- cloud=gce
- coverageBuild=false
- cpu=4
- diskCount=0
- encrypted=true
- fs=ext4
- localSSD=true
- metamorphicLeases=expiration
- runtimeAssertionsBuild=false
Help

See: [roachtest README](https://github.com/cockroachdb/cockroach/blob/master/pkg/cmd/roachtest/README.md)

See: [How To Investigate \(internal\)](https://cockroachlabs.atlassian.net/l/c/SSSBr8c7)

See: [Grafana](https://go.crdb.dev/roachtest-grafana/teamcity-21495766/tpcc-multiregion-survive-zone-chaos-true/1788361710231/1788368447656)

See: [Datadog Logs](https://us5.datadoghq.com/logs?query=service%3Aroachtest+%40cluster%3Ateamcity-21495766-1788328822-206-n10cpu4-geo&from_ts=1788361710231&to_ts=1788368447656&live=false&storage=flex_tier)

Same failure on other branches

- #171392 roachtest: tpcc/multiregion/survive=zone/chaos=true failed [A-kv-replication B-runtime-assertions-enabled C-bug C-test-failure O-roachtest O-robot P-2 T-kv branch-release-24.3.26-rc]

/cc @cockroachlabs/sql-foundations

[This test on roachdash](https://roachdash.crdb.dev/?filter=status:open%20t:.*tpcc/multiregion/survive=zone/chaos=true.*&sort=title+created&display=lastcommented+project) | [Improve this report!](https://github.com/cockroachdb/cockroach/tree/master/pkg/cmd/bazci/githubpost/issues)

Jira issue: CRDB-67819

Begin with the TeamCity build log and artifacts linked in the report, then inspect the failure at tpcc.go:581 and the roachtest README. Trace why the multiregion chaos run exceeds the new-order error threshold, and verify the test completes without the reported DRT failure.

Written by the indexing model from the issue text.