RFE: new parameter for perflog file name

[flx42]

This is a follow-up of #2577 and the comment #2578 (comment)

The request is to have a way to control the filename of the filelog output file, in order to have a human-readable filename like ib_write_bw_loopback_mlx5_6.log (where mlx5_6 is a test parameter) when listing files, instead of having ib_write_bw_loopback_<hash>.log

In addition to having a way to control the filename, I suppose we also need a way in the ReFrame settings file to stringify the test parameters in order to get a filename similar to what we had in ReFrame 3.x.

Thanks!

[vkarak]

Might be addressed by #2670.

[TomMelt]

I would also find this useful

[vkarak]

I have been giving a thought on this recently and I think having the test hash at test perflog filename is only a limitation; it does not offer anything. The log file would be named as BaseTestName.log instead of the current BaseTestName_<hash>.log and then log the parameters inside the test by default (through providing a %(check_params)s log attribute). The advantage of this is that you will have the data and the parameter values inside the same log file, so post-processing will be much easier. What do you think?

[flx42]

Yes I think a single file would be fine.
Thanks!