Shubham Jain shubhwip
shubhwip
/ RunServicesOnMacOSUsingLaunchctl.txt
Last active
August 28, 2025 16:59
This gist describe how to create and run launchctl service configuration for macOS. This tutorial shows how to configure a java service as a launchd service on macOS and do start, stop, status and automatic restart at the reboot using launchctl new APIs.
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| ### Launching Services In macOS(Root User) | |
| Step 1 : Create demo.plist in /Library/LaunchAgents/ | |
| Step 2 : Contents of demo.plist | |
| In this demo, I am running a java application. | |
| <?xml version="1.0" encoding="UTF-8"?> | |
| <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd"> | |
| <plist version="1.0"> |
shubhwip
/ latency.txt
Created
March 12, 2023 21:28
— forked from jboner/latency.txt
Latency Numbers Every Programmer Should Know
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| Latency Comparison Numbers (~2012) | |
| ---------------------------------- | |
| L1 cache reference 0.5 ns | |
| Branch mispredict 5 ns | |
| L2 cache reference 7 ns 14x L1 cache | |
| Mutex lock/unlock 25 ns | |
| Main memory reference 100 ns 20x L2 cache, 200x L1 cache | |
| Compress 1K bytes with Zippy 3,000 ns 3 us | |
| Send 1K bytes over 1 Gbps network 10,000 ns 10 us | |
| Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD |