Sam Varshavchik wrote:
Evan Panagiotopoulos writes:
I have top running in a terminal window and there are two processes
running, Xorg and top. Xorg is using 18% of the cpu. If I open another
window the percent goes into the 30s and 40s. I don't think this is
normal.
Going to System->Administration->Display I see that I have the correct
hardware installed, nVidia 41.9. The Dell system profile reports that I
have a NV42 card.
Are you using Nvidia's non-free binary kernel module? If so, remove
the module and revert to Xorg's free nv driver. You may need to
reinstall all Xorg packages; in some instances Nvidia's installer
overwrites Xorg's libraries.
If X still chews up the CPU with Xorg's nv driver, report it in
Bugzilla. If X works correctly after you removed Nvidia's binary
module, take it up with Nvidia.
I had a similar problem with the Xorg 7.0 server on FC5. turns out that
the automatic setting of MTRR was turned off. They restored it with 7.1.
When I properly set my MTRR, my Xorg cpu utilization went from 80% to 15%.
Below is a cut from a recent posting I did explaining how to set it.
Try:
cat /proc/mtrr
reg00: base=0x00100000 ( 1MB), size= 256MB: write-back, count=1
reg01: base=0xfc000000 (4032MB), size= 32MB: write-combining, count=1
>
> However, I'm having a hard time starting X, as it's already running!
> I've combed the logs in /var/logs but I don't have those lines. When I
> kill X with CTRL-ALT-ESC it starts right back up automatically, not
> letting me redirect it's output to a file.
I found mine using lspci
# /sbin/lspci -v
:
01:05.0 VGA compatible controller: nVidia Corporation NV5 [RIVA
TNT2/TNT2 Pro] (rev 15) (prog-if 00 [VGA])
Subsystem: ASUSTeK Computer Inc. AGP-V3800 SDRAM
Flags: bus master, 66MHz, medium devsel, latency 40, IRQ 11
Memory at f5000000 (32-bit, non-prefetchable) [size=16M]
Memory at fc000000 (32-bit, prefetchable) [size=32M]
<========== use the prefetchable
Capabilities: [60] Power Management version 1
Capabilities: [44] AGP version 2.0
I then added this to /etc/rc.local:
# set mtrr at least until Xorg 7.1 is added to the distribution
echo "base=0xfc000000 size=0x2000000 type=write-combining" >| /proc/mtrr
> Just for kicks, here's the output of "lspci -v" as suggested by the
> same page:
:
> 01:00.0 VGA compatible controller: ATI Technologies Inc Radeon
> Mobility X1400 (prog-if 00 [VGA])
> Subsystem: Dell Unknown device 2003
> Flags: bus master, fast devsel, latency 0, IRQ 4
> Memory at d0000000 (32-bit, prefetchable) [size=256M]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> I/O ports at ee00 [size=256]
> Memory at efdf0000 (32-bit, non-prefetchable) [size=64K]
> [virtual] Expansion ROM at efd00000 [disabled] [size=128K]
> Capabilities: [50] Power Management version 2
> Capabilities: [58] Express Legacy Endpoint IRQ 0
> Capabilities: [80] Message Signalled Interrupts: 64bit+
> Queue=0/0 Enable-
I would guess your's would look like:
echo "base=0xd0000000 size=0x10000000 type=write-combining" >| /proc/mtrr
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I noticed that you seemed to have a really good answer to this thread,
but I didn't want to but in to disrupt it. I am having the same issue
with my laptop. Here is my video card info for lspci-v:
01:00.0 VGA compatible controller: nVidia Corporation GeForce Go 7400
(rev a1) (prog-if 00 [VGA])
Subsystem: Dell Unknown device 01cc
Flags: bus master, fast devsel, latency 0, IRQ 16
Memory at ed000000 (32-bit, non-prefetchable) [size=16M]
Memory at d0000000 (64-bit, prefetchable) [size=256M]
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
prefetchable memory start address at 0xd0000000 with the size of
0x10000000 (== 256M in hex)
Memory at ee000000 (64-bit, non-prefetchable) [size=16M]
[virtual] Expansion ROM at ef000000 [disabled] [size=128K]
Capabilities: <access denied>
How do you calculate or figure out the information you gave in your
echo line. If you know please let me know.
echo "base=<address> size=<memory size> type=write-combining" >|
/proc/mtrr
in this case
echo "base=0xd0000000 size=0x10000000 type=write-combining" >| /proc/mtrr
