Alan.Coopersmith <> wrote:
> Sebastien Roy wrote:
>>>> Is there a CR filed against Xorg that I can look at?
>>> I wonder, is this a regression? With Xorg, did powertop report 100%
>>> highest p-state residency on b121 and previous version?
>>
>> That's a yes for build 121, but powertop didn't work at all in the
>> other builds I had running on this laptop (something about missing
>> dtrace probes). I don't remember noticing this until recently, so
>> it's possible that this was introduced at some point after build 118
>> (the build I had running before 121).
>>
>>> If this is a regression, we need to ask Xorg guys what they did to
>>> hurt idle power, :)
>>
>> Or at least some help root-causing this. We don't know if the cause
>> is the X server or a client issuing X requests for no reason (I
>> suspect it's the latter)... I wrote a little dtrace script that
>> dumps X requests, and on an idle system, I see hundreds of X
>> requests every second from X client ID 43. Now how do I map that to
>> a process ID?
>
> My first question would be have you installed the run-away GNOME
> program fix that Ghee posted last week?
> http://mail.opensolaris.org/pipermail/opensolaris-discuss/2009-September/050070.html
>
> Otherwise, the only way to turn an X client id into a process id is
> to either be tracing when it connects, or walk the server internal
> structures in a debugger. Unfortunately, we don't deliver with the
> -g information in the X server, and aren't allowed to ship CTF data,
> so you'd have to rebuild the X server from source to get the data
> structure info.
I replicated this issue on my T400.
This should not be the USB related, because my laptop doesn't have any
USB devices connected. I'm not sure what difference of Xorg between
SXCE-B122 and OpenSolaris-snv122. But assume that we are talking about
OpenSolaris-snv122, not SXCE.
When the system is in idle with Xorg enabled, I found the scheduler ping-pong
between idle and another kthread. Thru checking the t_procp member in this
kthread, I got this.
char [17] u_comm = [ "Xorg" ]
char [80] u_psargs = [ "/usr/X11/bin/Xorg :0 -nolisten tcp -audit 0 -br \
-auth /var/lib/gdm/:0.Xauth" ]
That is why I think this issue is Xorg related.
I don't have any Xorg background, please let me know if I can offer more info.
Thanks,
-Aubrey
