How to suppress verbosity of TFileMerger?

[abilandz]

Dear Root Experts,

What would be the quickest/most elegant way to suppress (at the level of macro) the following example information coming out of TFileMerger during the merging procedure:

[TFile::Cp] Total 0.93 MB |====================| 100.00 % [10.1 MB/s]
[TFile::Cp] Total 0.93 MB |====================| 100.00 % [9.5 MB/s]
[TFile::Cp] Total 0.94 MB |====================| 100.00 % [10.0 MB/s]
[TFile::Cp] Total 0.95 MB |====================| 100.00 % [10.1 MB/s]

This information is printed on the screen by default during merging. However, I didn’t find this information neither informative nor useful (nor as a matter of fact funny ). The point is that I am using macro based on TFileMerger utility regularly to merge a very large amount of Root files and I am ending up constantly with a very large number of above pretty much useless lines on the screen.

Thanks,
Ante

[rdm]

Hi,

alas, in the current version this cannot be turned off. I’ve fixed this in the trunk version of ROOT where in TFileMerger::AddFile() you can specify if you want to have progress feedback for that file or not. Alternatively you could create the merger with the option isLocal=kFALSE in which case the files are not copied locally before merging (and hence you will not get this message). See however if the performance impact of this is a problem for you.

Cheers, Fons.

[abilandz]

Thanks!

Ante