On Tue, Aug 23, 2005 at 04:38:36PM +0530, Rajesh wrote: > I have a case occasionally when I copy data from a usb storage (ipod) to > my hard drive the load average goes up from 0.4 to about 15.0, and the > system becomes very unusable till I kill the cp command. I have checked > the CPU usage, bytes read from usb device, byte written to hard drive > etc, and all these values are low like CPU usage is at a maximum of 30%, > disk read bytes is at an average of 1.5 MiB/s, disk write bytes is at > 1.5 MiB/s, number of processes is at 110, etc, during this high load.
1.5 MB/s suggests you're using an IDE drive in PIO mode. Switch to DMA mode (hdparm -d 1 /dev/hda) and see if it gets any better. Erik -- +-- Erik Mouw -- www.harddisk-recovery.com -- +31 70 370 12 90 -- | Lab address: Delftechpark 26, 2628 XH, Delft, The Netherlands - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
