The log importer is very resource intensive. How many cores does your server have? How much memory have you given to mysql and PHP?
If you have enough memory- you will generally get about 200 lines/sec imported into the DB, depending what you have apache logging that should take anywhere from 30 minutes to 2 hours for one processor to import.
I suspect your system probably doesn't have enough RAM- probably for PHP. I get about 1.1k lines a second giving PHP about 8GB of RAM and 5 cores. It takes me about an hour to import a 1.5GB apache log.
Theoretically if the import fails- piwik should purge the lines it imported from that log and everything will start new.
If you have enough memory- you will generally get about 200 lines/sec imported into the DB, depending what you have apache logging that should take anywhere from 30 minutes to 2 hours for one processor to import.
I suspect your system probably doesn't have enough RAM- probably for PHP. I get about 1.1k lines a second giving PHP about 8GB of RAM and 5 cores. It takes me about an hour to import a 1.5GB apache log.
Theoretically if the import fails- piwik should purge the lines it imported from that log and everything will start new.