Structuring data for efficient I/O format compre= Data structure by example access (2 Graph the temperature evolution of a given device o read 43.2K numbers from the file,every 40K bytes ●graph them → 下→ ead "read read see seek seek Cost o43.2K reads of 4 bytes and 43.2K seeks o on top typical block size in a filesystem is 8k you will probably read effectively 20%of the file o actually reading the whole file will be more efficient Here the structure of our data is a killer 8/42 S.Ponce-CERNStructuring data for efficient I/O 8 / 42 S. Ponce - CERN format compress addr state c/c row/col Data structure by example - access (2) Graph the temperature evolution of a given device read 43.2K numbers from the file, every 40K bytes graph them seekread seekread seekread Cost 43.2K reads of 4 bytes and 43.2K seeks ! on top typical block size in a filesystem is 8k you will probably read effectively 20% of the file ! actually reading the whole file will be more efficient Here the structure of our data is a killer