Drastically free up resources on your macOS system by reducing excessive logging. The default logging subsystem (com.apple.CoreSuggestions) generates thousands of log entries per second, consuming significant system resources.
Commands to Reduce Logging Overhead
Run these commands in Terminal (as root or with sudo):
sudo log config --subsystem com.apple.CoreSuggestions --mode "level:off" sudo log config --subsystem com.apple.CoreSuggestions --mode "persist:off" sudo log config --subsystem com.apple.CoreSuggestions --mode "stream:default"
Verify Log Reduction
Check real-time log generation before and after applying changes:
log show --info --debug --style syslog --predicate 'subsystem != ""' --last 1s | wc
Before:
- 4138 lines, 42318 words, 636305 characters per second
- 2431 lines, 27403 words, 401824 characters per second
After:
- 312 lines, 5442 words, 65833 characters
- 14 lines, 321 words, 3423 characters
You Should Know: Additional System Optimization Commands
1. Check System Logs in Real-Time
sudo log stream --level debug
2. Clear System Logs
sudo rm -rf /var/log/
3. Disable Unnecessary macOS Services
sudo launchctl unload -w /System/Library/LaunchDaemons/com.apple.suggestd.plist
4. Monitor System Performance
top -o cpu Sort by CPU usage vm_stat Check memory usage
5. Disable Spotlight Indexing (Temporarily)
sudo mdutil -a -i off
6. Check Kernel-Level Logs
sudo dmesg
7. Optimize Disk I/O
sudo fs_usage -w Monitor disk writes
What Undercode Say
Excessive logging can slow down macOS systems, particularly on older hardware. Disabling unnecessary subsystems (com.apple.CoreSuggestions) significantly reduces overhead. For further optimization:
– Disable Time Machine snapshots (sudo tmutil thinlocalsnapshots / 9999999999999999 1)
– Clear DNS cache (sudo dscacheutil -flushcache; sudo killall -HUP mDNSResponder)
– Disable Crash Reporter (sudo launchctl unload -w /System/Library/LaunchAgents/com.apple.ReportCrash.plist)
Expected Output:
A streamlined macOS system with reduced logging overhead, improved performance, and better resource allocation.
Prediction
Future macOS updates may introduce more granular logging controls, allowing users to fine-tune system diagnostics without sacrificing performance.
References:
Reported By: Activity 7318918691503427584 – Hackers Feeds
Extra Hub: Undercode MoN
Basic Verification: Pass ✅
