Re: High CPU Usage on software raid 0

It is impossible for "system idle" to be at 90% while CPU usage is at 80%.
Simple mathematics tells you that you can not utilize more than the whole.

--
Regards,

Richard Urban

If you knew as much as you think you know,
You would realize that you don't know what you thought you knew!


<clive@xxxxxxxxxxxxxx> wrote in message
news:1119161237.789514.301350@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> Hi,
>
> I set up a software raid 0 on two 80 gig seagate drives a while ago and
> everything was going swimmingly, I was getting great transfer rates and
> not much CPU usage using the raid.
>
> Recently, I'm not sure exactly when, but the CPU usage needed to
> perform file operations on the drives has become very intense.
>
> To read a file now, my CPU shoots up to around 80%.
> When i look at the graph, the red graph is just as high as the green
> graph, that is, the kernel seems to be doing a lot of work. When i look
> at the applications CPU usage, it's still very low and the system idle
> process is around the 90% mark.
>
> Has anyone heard of this before, and what solutions are there to
> solving this confusing problem?
>
> Could it be a problem with a degraded cable or bent in an bad way?
>
> Hardware
> Athlon 2400+
> Two Seagate 80gig drives software raid 0
> Both using seperate IDE cables (different channels i think is the word
> i should use here), they are the only devices on their respective
> cables.
>
> using Windows XP SP2, all security patches applied.
>


.

Relevant Pages

  • Re: High CPU Usage on software raid 0
    ... >> not much CPU usage using the raid. ... >> When i look at the graph, the red graph is just as high as the green ... >> Both using seperate IDE cables (different channels i think is the word ... the set with Disk Manager, ...
    (microsoft.public.windowsxp.hardware)
  • Re: High CPU Usage on software raid 0
    ... > I set up a software raid 0 on two 80 gig seagate drives a while ago and ... > not much CPU usage using the raid. ... > perform file operations on the drives has become very intense. ... > Two Seagate 80gig drives software raid 0 ...
    (microsoft.public.windowsxp.hardware)
  • High CPU Usage on software raid 0
    ... I set up a software raid 0 on two 80 gig seagate drives a while ago and ... Recently, I'm not sure exactly when, but the CPU usage needed to ... perform file operations on the drives has become very intense. ... Two Seagate 80gig drives software raid 0 ...
    (microsoft.public.windowsxp.hardware)
  • Re: Windows Explorer using all CPU resources
    ... > Using Process Explorer, locating the file that is using ... Selecting the Performance Graph shows CPU Useage ... > A history of a process' CPU usage and its private bytes ...
    (microsoft.public.windowsxp.perform_maintain)
  • Re: Setting DMA on?
    ... >>> drives that Nero claims has DMA enabled, ... >>> there is any difference in the cpu usage in the task manager. ...
    (comp.sys.ibm.pc.hardware.storage)