Optimizing existing large codebase Measure Modemise Mem threads 花5 Measuring Performance Measuring Performance ●What is performance? Tools available o Finding bottlenecks 2 Code modernization Improving Memory Handling The nightmare of thread safety Low level optimizations Conclusion perf tools bottlenecks 6/57 S.Ponce-CERNOptimizing existing large codebase 6 / 57 S. Ponce - CERN Measure Modernize Mem threads low level c/c perf tools bottlenecks Measuring Performance 1 Measuring Performance What is performance ? Tools available Finding bottlenecks 2 Code modernization 3 Improving Memory Handling 4 The nightmare of thread safety 5 Low level optimizations 6 Conclusion