Re: FC4 Slow System

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On 12/29/05, Jeremy Thompson < jeremy.a.thompson+fedoralist@xxxxxxxxx> wrote:


On 12/29/05, Bob Chiodini < rchiodin@xxxxxxxxxxxxx> wrote:
On Thu, 2005-12-29 at 17:43 +0100, Jeremy Thompson wrote:
> All,
>   Just built a Fedora System to act as a PVR.  But it is running so
> slow.  Takes almost a minute to open a terminal window.  It's a P4
> 2.4Ghz with a Gig of mem, so it should be a problem.  Currently it's
> showing syslogd, and klogd each taking 20~24% of the CPU cycle.  I
> haven't had this problem before so I can't tell if this is a problem
> or not.
>
>   I tried searching google and the archives, but it didn't help much.
> Most replies were to FC1&2 from years ago.
>
>   If someone could point me in the right direction I would appreciate
> it.
>
>   Thank you,
>
> JT


JT,

Is anything getting logged?  Presumably syslogd and klogd are doing
something.

Bob...


Yeah,
  That would be something to check.. I'm such a newb...

checking on klogd, did the following -
from
/proc
[root@mythtv proc]# cat kmsg  
<7>cx88[0]: irq pci [0x8000] ipb_dma_err*

and checking
/var/log
[root@mythtv log]# cat messages
Dec 29 18:28:50 mythtv kernel: : irq pci [0x8000] ipb_dma_err*

  Of course these messages were spammed like crazy.

  I am going to google these errors and search archives.  If you find anything of interest let me know, as I will reply to this if I find anything.

  On a side note, thanks.  I have already learned a lot, I have never checked logs before... so I had to find them first!

JT


Ok,
  I haven't been able to find anything.  Searched the following -

Google
"ipb_dma_err* site: http://mythtv.org/pipermail/mythtv-users/ "

Since it's a mythtv system I am trying to build.

"irq pci [0x8000] ipb_dma_err* site: https://www.redhat.com/archives/fedora-list/"

On Google Linux Search
"irq pci [0x8000] ipb_dma_err" and various iterations.  However all I get are kernel mailing list patch notices, or nothing.

Seems it's a PCI DMA error? 

I am starting to lean towards a problem with one of the cards I have installed, just cause I can't think of anything else.  Currently I have the following -

[root@mythtv proc]# cat pci
PCI devices found:
  Bus  0, device   0, function  0:
    Class 0600: PCI device 8086:2560 (rev 3).
      Prefetchable 32 bit memory at 0xf0000000 [0xf7ffffff].
  Bus  0, device   1, function  0:
    Class 0604: PCI device 8086:2561 (rev 3).
      Master Capable.  Latency=64.  Min Gnt=8.
  Bus  0, device  29, function  0:
    Class 0c03: PCI device 8086:24c2 (rev 2).
      IRQ 11.
      I/O at 0xd800 [0xd81f].
  Bus  0, device  29, function  1:
    Class 0c03: PCI device 8086:24c4 (rev 2).
      IRQ 4.
      I/O at 0xd400 [0xd41f].
  Bus  0, device  29, function  2:
    Class 0c03: PCI device 8086:24c7 (rev 2).
      IRQ 10.
      I/O at 0xd000 [0xd01f].
  Bus  0, device  29, function  7:
    Class 0c03: PCI device 8086:24cd (rev 2).
      IRQ 10.
      Non-prefetchable 32 bit memory at 0xe5800000 [0xe58003ff].
  Bus  0, device  30, function  0:
    Class 0604: PCI device 8086:244e (rev 130).
      Master Capable.  No bursts.  Min Gnt=6.
  Bus  0, device  31, function  0:
    Class 0601: PCI device 8086:24c0 (rev 2).
  Bus  0, device  31, function  1:
    Class 0101: PCI device 8086:24cb (rev 2).
      IRQ 10.
      I/O at 0xf000 [0xf00f].
      Non-prefetchable 32 bit memory at 0x30000000 [0x300003ff].
  Bus  0, device  31, function  3:
    Class 0c05: PCI device 8086:24c3 (rev 2).
      I/O at 0xe800 [0xe81f].
  Bus  1, device   0, function  0:
    Class 0300: PCI device 10de:0171 (rev 163).
      IRQ 11.
      Master Capable.  Latency=248.  Min Gnt=5.Max Lat=1.
      Non-prefetchable 32 bit memory at 0xe6000000 [0xe6ffffff].
      Prefetchable 32 bit memory at 0xe8000000 [0xefffffff].
      Prefetchable 32 bit memory at 0xe7800000 [0xe787ffff].
  Bus  2, device   8, function  0:
    Class 0200: PCI device 8086:103a (rev 130).
      IRQ 11.
      Master Capable.  Latency=32.  Min Gnt=8.Max Lat=56.
      Non-prefetchable 32 bit memory at 0xe5000000 [0xe5000fff].
      I/O at 0xb800 [0xb83f].
  Bus  2, device  10, function  0:
    Class 0401: PCI device 1102:0004 (rev 4).
      IRQ 11.
      Master Capable.  Latency=32.  Min Gnt=2.Max Lat=20.
      I/O at 0xb400 [0xb43f].
  Bus  2, device  10, function  1:
    Class 0980: PCI device 1102:7003 (rev 4).
      Master Capable.  Latency=32.
      I/O at 0xb000 [0xb007].
  Bus  2, device  10, function  2:
    Class 0c00: PCI device 1102:4001 (rev 4).
      IRQ 10.
      Master Capable.  Latency=32.  Min Gnt=2.Max Lat=4.
      Non-prefetchable 32 bit memory at 0xe4800000 [0xe48007ff].
      Non-prefetchable 32 bit memory at 0xe4000000 [0xe4003fff].
  Bus  2, device  11, function  0:
    Class 0400: PCI device 14f1:8800 (rev 5).
      IRQ 10.
      Master Capable.  Latency=32.  Min Gnt=20.Max Lat=55.
      Non-prefetchable 32 bit memory at 0xe3000000 [0xe3ffffff].
  Bus  2, device  11, function  2:
    Class 0480: PCI device 14f1:8802 (rev 5).
      IRQ 10.
      Master Capable.  Latency=32.  Min Gnt=6.Max Lat=88.
      Non-prefetchable 32 bit memory at 0xe2000000 [0xe2ffffff].

did a cat pci | grep 0x8000, but got nothing.

I don't know how to get the output of the KinfoCenter, otherwise I would paste that as well.  Checking the interrupts I get -

[root@mythtv proc]# cat interrupts
           CPU0
  0:     799753          XT-PIC  timer
  1:       4063          XT-PIC  i8042
  2:          0          XT-PIC  cascade
  4:      81187          XT-PIC  uhci_hcd:usb3
  8:          1          XT-PIC  rtc
  9:          1          XT-PIC  acpi
 10:   90662208          XT-PIC  cx88[0], cx88[0], ehci_hcd:usb1, uhci_hcd:usb4, ohci1394
 11:     198655          XT-PIC  EMU10K1, uhci_hcd:usb2, eth0, nvidia
 12:        104          XT-PIC  i8042
 14:     270969          XT-PIC  ide0
 15:     227687          XT-PIC  ide1
NMI:          0
ERR:          1
 
also,

root@mythtv proc]# cat dma
 4: cascade

not sure what to do past this.  Thanks.

JT

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