Re: [Dri-devel] r200 PCI Slowness

[Mike M. <che...@ya...>]

lspci -vvv

--- Chris Ison <wil...@us...> wrote:
> After a couple of kernel recompiles I got oprofile to work, and it was
> reporting that most of its time was spend in default_idle for both
> glxgears and qw-client-glx (from QuakeForge CVS).
> 
> After speaking to one of the oprofile ppl, they seem to think that this
> is as much as I will get cause it appears that the amount of time spent
> in default_idle could be pointing to the driver waiting for IRQ's.
> 
> Does DRI enable busmastering for PCI (if busmastering works that way)
> and does DRI make the card utilize it for PCI.
> 
> With the speeds even AGPx1 gets I'm assuming the same questions for AGP
> would be answered with a yes, which is why I'm asking exclusively for
> PCI.
> 
> How can I check to see if the driver is using busmastering for my card?
> 
> Here is the top few lines from the glxgears output.
> 
> samples  %        image name       app name         symbol name
> 135746   45.8645  vmlinux          vmlinux          default_idle
> 23597     7.9727  r200_dri.so      glxgears         emit_vec12
> 7932      2.6800  vmlinux          vmlinux          mark_offset_tsc
> 6826      2.3063  oprofiled        oprofiled        sfile_match
> 5062      1.7103  libc-2.3.2.so    glxgears         (no symbols)
> 5016      1.6948  vmlinux          vmlinux          mask_and_ack_8259A
> 4726      1.5968  vmlinux          glxgears         __copy_from_user_ll
> 4505      1.5221  radeon           glxgears         radeon_cp_cmdbuf
> 3326      1.1238  r200_dri.so      glxgears         r200_emit_state_list
> 


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