Using ArcGIS 10.1. I have a large polygon feature class (130,000 records). I need to do an inside/outside buffer (+5 then -5 to fill in some gaps)... the process takes so long, I'm looking for a way to speed it up. Dissolving? Splitting into smaller chunks. Any tips are appreciated.
Another option, and one that should speed up your process, would be to split up your feature class into multiple feature classes (you could export by OID) and use multiprocessing so that multiple cores are being leveraged. ESRI has a good blog post to get you started. After it's completed, you can use Merge to bring them back together again.