trace files merging doesn't work

[gianlucaborello]

I would like to do:

$ sysdig -r trace1.scap -r trace2.scap -r trace3.scap -w trace.scap

Thus merging the 3 traces in a single one.
Currently it doesn't work, but this can be done in a very precise and complex way (e.g. doing a timestap-ordered merging, merging the process tables, ...) or just assume that the user is providing consecutive traces and thus just concatenating the events.

[proger]

+1 looking forward to this great feature

[kirantpatil]

visualize the trace stack using flmegraph https://github.com/brendangregg/FlameGraph and heatmap https://github.com/brendangregg/HeatMap.

[github-actions]

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