Simulating XCache on historical data

Rucio Traces

Rucio runs a REST API that collects data from diffent clients requesting the data. This can be a user trying to download a file or dataset or Pilot trying to get path to data. Records are described here.

To destinguish type of access one uses field "eventType". The most important are: get_sm - production job input download get_sm_a - analysis job input download put_sm - production job output upload put_sm_a - analysis job output upload

Results

• understanding formats, simulation of single site slides.
• understanding multilayer cache, throughput needed, simulation of US network slides.
• simulation of cache optimized job scheduling.

AB testing

• effect on jobs wall times
• effect on tasks turn-around times