Jerry Geis wrote: > every other day I do full backups to both a second internal disk and > an external usb disk. > > I am using a fully up to date centos 5.1 AMD 64 X2 6400+ machine. with > SATA disks. > using an NVIDIA chipset, > > when I do a full rsync the responsiveness of my machine suffers. Slow > on the internal disk and really slow on external usb. > doing "top" shows 0% idle but only 17% CPU usage by the rsync command. > > I am stunned that a 6400+ machine dual core can get this sluggish when > doing a copy to disk. > Is there something I potentially have not set right? > > dmesg shows my SATA disks at UDMA133 and 1.5 Gbps. > > THanks, > > Jerry > _______________________________________________ > CentOS mailing list > CentOS at centos.org > http://lists.centos.org/mailman/listinfo/centos > Hi I would recommend you install the systat rpm and then use sar and iostat commands to see if you can identify where the bottleneck is occurring. Have a nice day