GET THE BENCH

git clone https://github.com/cern-it-sdc-id/tdavixfile-bench-tools.git tdavixfile-bench-tools

HOW TO RUN THE BENCH

1- INSTALL a ROOT + TDAVIXFILE environment

   See https://dmc.web.cern.ch/projects/davix/root-and-davix-tutorial for more details

2- Configure your system.rootrc depending of your server usage
   Example : Enable grid support for WLCG
      
   See here https://dmc.web.cern.ch/projects/davix/root-and-davix-tutorial#configTDavixFile

3- install a C++ compiler + root headers files
   Example under SL6:
	sudo yum install gcc-c++
	sudo yum install root-physics root-tree root-tree-player root-tree-viewer root-graf3d

4- run ./build.sh


5- download the test file http://root.cern.ch/files/h1big.root and place it on your tested server


6- run ./testEvent [yourUrl]
    Example ./testEvent http://root.cern.ch/files/h1big.root


Example of result :

Number of branches in the cache ...: 2
Cache Efficiency ..................: 0.988857
Cache Efficiency Rel...............: 0.999374
Learn entries......................: 1
Cached Reading.....................: 5481918 bytes in 1 transactions
Reading............................: 4619 bytes in 3 uncached transactions
Readahead..........................: 256000 bytes with overhead = 0 bytes
Average transaction................: 5481.918000 Kbytes
Number of blocks in current cache..: 4792, total size: 5591952
Bytes read = 0
Real Time =   2.943 s, CPUtime =   0.740 s