On 6/7/07, Prasad Joshi <prasadjoshi124@xxxxxxxxx> wrote:
Yes, i got it but i still cant understand what work does it do. Why is it initiating so many DMA transfers.
its says process id out of range.
Hi,
On Linux or any UNIX platform process with PID 1 is init process and process with PID 0 is a swapper process.
Yes, i got it but i still cant understand what work does it do. Why is it initiating so many DMA transfers.
Check the same for process having PID 0 use command ps -p0
its says process id out of range.
On 6/7/07, Devvrat Tripathi <tripathidevvrat@xxxxxxxxx> wrote:On 6/7/07, Devvrat Tripathi < tripathidevvrat@xxxxxxxxx> wrote:On 6/7/07, Erik Mouw <mouw@xxxxxxxxxxxx > wrote:-----BEGIN PGP SIGNED MESSAGE-----
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On Thu, Jun 07, 2007 at 12:02:03PM +0200, Devvrat Tripathi wrote:
> I wanted to ask you if current pid will work at the driver level. i used in
> pci-gart.c to get the processes which are using DMA transfer but stragely i
> get 0 sometimes and sometime proper pid's.
0 is a proper pid as well, it's the "swapper" task.
Erik
what is a "Swapper" task. Can you explain what work does it do and why does it do so many IO transfers.
devvrat
Also this is what wikipedia says of idle task.
" In Unix-like operating systems such as Linux, the idle task has process ID zero, and never exits. "
but the results which i am getting show that this task does exist and is initiating so many DMA transfers. what can be the possible reason for it or is it that i am missing something?
devvrat
