My OGR2OGR command is working very hard and I am kind of satisfied but not as fast as I expected. What I am doing is Joining a table to a fgdb feature class and save it to another fgdb. through my mac Activity Monitor, I recognized that it only uses one CPU core.
It does seem like Geotiff format can use multiple cpu cores but ogr2ogr cannot (or I may be wrong).
How do I use all the CPU cores?