Key ingredients to achieve effective 1/O ye I(op nct caching c/e Outline ① Asynchronous 1/O Latency Asynchronous l/O interfaces ●Message queues 2 I/O optimizations Optimizing network transfers Optimizing local transfers Influence of data structures on I/O o Measuring I/O efficiency of algorithms Caching o Principles Policies ●Distributed Caches 3 Conclusion 3/57 S.Ponce-CERNKey ingredients to achieve effective I/O 3 / 57 S. Ponce - CERN async IOopt struct caching c/c Outline 1 Asynchronous I/O Latency Asynchronous I/O interfaces Message queues 2 I/O optimizations Optimizing network transfers Optimizing local transfers 3 Influence of data structures on I/O Measuring I/O efficiency of algorithms 4 Caching Principles Policies Distributed Caches 5 Conclusion