Hi guys, A quick question: I have 3000 files on castor. At the moment I have a loop which chains all the files together, and then the resulting TChain is used for the eventloop. This is extremely, extremely slow - so far it's been 30 mins and only 300 of the 3000 files are chained. I'm not sure how ROOT works - does it load the files in memory to chain them? Does the number of files make a difference? Would it be quicker to merge the 3000 into (say) 30 large files and chain those, or is ROOT just limited by network performance (i.e. there's nothing I can do)? Cheers! Ed Moyse
This archive was generated by hypermail 2b29 : Thu Jan 01 2004 - 17:50:15 MET