Hi, >>What I am worry about is "93.5% wa" ... >> >>Could someone explain me what is the VACUUM process waiting for ? >> > > > Disk I/O. > CPU wa: Time spent waiting for IO. Prior to Linux 2.5.41, shown as zero. Just a little more info to help understand what Alan has pointed out. Your CPU processes are waiting on the HDD ... HTH -- Regards, Rudi
