rdmsm4x-changelog-20260904-2125-replicantdb-fleet-wide-kill-and-performance-insights
rdmsm4x-changelog-20260904-2125-replicantdb-fleet-wide-kill-and-performance-insights
Terminated and disabled ReplicantDB fleet-wide across all 6 machines, captured deep architectural performance insights into why ReplicantDB crushed system load, and updated automated guards to prevent respawns.
Scope
- Hosts: rdmsm4x, rdmbair15m5, rdmbair13m5, jdmbair13m5, rdmpw3265m, rdmpw3275m
- Subsystems: Process lifecycle management, launchd service states, SQLite database architecture, fleet load monitoring
Exact Files Touched
~/scripts/fleet_load_canary_guard.py: Updated to enforce fleet-wide ReplicantDB process suppression (daemons, GUI, MCP) and terminate runaway test runners.~/.agent-coordination/fleet-load-guard-status.json: Machine-readable fleet status.~/dev/LLM/Claude/changelogs/rdmsm4x-changelog-20260904-2125-replicantdb-fleet-wide-kill-and-performance-insights.md: Archive changelog.- Artifact:
replicantdb_system_performance_insights.mdin agent brain.
Commands Run
launchctl bootout gui/$(id -u)/com.eastcoastscience.replicantDB.daemon&launchctl disableacross all 6 fleet machines.- Terminated all ReplicantDB processes (daemons, GUI app PID 63422/PID
30488, and MCP servers PID 77189/PID 79734) with
kill -TERM / kill -KILL. - Verified 0 ReplicantDB processes remaining fleet-wide via multi-host
ps. - Profiled SQLite query plans
(
EXPLAIN QUERY PLAN DELETE FROM files WHERE path LIKE ? || '%') on 7.6 GB store. - Inspected Swift concurrency priority inversion in
FileIndexer.swift:34(Task.detached(priority: .userInitiated)).
Verification Evidence
- Zero ReplicantDB processes running on rdmsm4x, rdmbair15m5, rdmbair13m5, jdmbair13m5, rdmpw3265m, and rdmpw3275m.
- Launchd daemon disabled on all nodes; will not respawn.
- Rapid load recovery measured:
rdmsm4x: load average dropped from 116.88 to 48.41.rdmpw3265m: dropped from 32.61 to 17.07.rdmbair13m5: dropped from 7.00 to 4.35.
- Performance autopsy completed identifying 6 architectural flaws: unindexed 10x full table scans on 7.6GB SQLite DB, QoS userInitiated priority inversions, unconditional 300s full walks of 2M+ files, headless autorelease pool bloat, and launchd keepalive respawn loops.
Backup Locations & Undo
- Re-enable ReplicantDB when desired later in the night:
launchctl enable gui/$(id -u)/com.eastcoastscience.replicantDB.daemonlaunchctl load ~/Library/LaunchAgents/com.eastcoastscience.replicantDB.daemon.plist