{"id":327,"date":"2005-01-26T18:00:56","date_gmt":"2005-01-26T16:00:56","guid":{"rendered":"http:\/\/www.greenman.co.za\/wordpress\/?p=327"},"modified":"2005-01-26T18:00:56","modified_gmt":"2005-01-26T16:00:56","slug":"how-much-memory-can-a-26-linux-kernel-address","status":"publish","type":"post","link":"https:\/\/www.greenman.co.za\/blog\/?p=327","title":{"rendered":"How much memory can a 2.6 Linux kernel address"},"content":{"rendered":"

Busy having a debate with MySQL support about the memory limit for processes under Linux 2.6. We have a shiny new database with 6GB RAM, and the question is how useful is this with a 32-bit processor.<\/p>\n

As far as I know, processes on a 2.6 kernel can address 4GB. (there’s a reference<\/a> on kerneltrap<\/a>).<\/p>\n

MySQL support have told me there’s a 2.5GB limit. This difference would explain some of the problems with our database server! We’ve created a 3GB process on that same machine, and can remember MySQL going up well beyond 2.5GB in the initial imports. so so far I’m not convinced of their advice.<\/p>\n

Some references for others bumbling across this page:<\/p>\n