Arjan, where can we download the 1.99 of powertop? /Winson
>-----Original Message----- >From: [email protected] [mailto:meego-kernel- >[email protected]] On Behalf Of Arjan van de Ven >Sent: Wednesday, December 22, 2010 10:17 AM >To: Mathew, JohnX >Cc: [email protected] >Subject: Re: [Meego-kernel] Doubt about a timer stat > >On 12/22/2010 9:47 AM, Mathew, JohnX wrote: >>> -----Original Message----- >>> From: Arjan van de Ven [mailto:[email protected]] >>> Sent: Wednesday, December 22, 2010 5:48 PM >>> To: Tardy, Pierre >>> Cc: al; Mathew, JohnX; [email protected] >>> Subject: Re: [Meego-kernel] Doubt about a timer stat >>> On 12/22/2010 7:52 AM, Tardy, Pierre wrote: >>>>> On 12/21/2010 11:10 PM, al wrote: >>>>>> Hi, >>>>>> >>>>>> I keep seeing the following timer stat - >>>>>> 1, 1 init hrtimer_start_range_ns (hrtimer_wakeup) >>>>>> >>>>>> Can anyone please explain what init process cases this ? >>>>> which meego version is this on? >>>> On an old internal build from Oct, 14th, we are also seeing this timer. >(15 sec timer from init process) >>>> John was supposed to look at this this week. >>>> John, do you have any news on this ? >>>> init will check every 15 seconds or so if there's zombies to reap. >>>> we could make it 30 if it shows up as a power issue. >> After using the ftrace - func_stack_trace I found that the fs/select.c - >"select" system call is calling schedule_hrtimeout_range_clock each time >the init process wakes up the system. >> So my assumption is that a userland application or the init process >itself is using the "select" system call to wait on a file descriptor. >> Pierre/Arjan have you seen this behavior before? >> I am having trouble finding out which is the exact userland application >it is.... >> > >it'll be init I suspect. > > >but.... why not run powertop 1.99 .. it'll tell you in quite a bit of >detail who's waking the CPU up ;-) > >_______________________________________________ >MeeGo-kernel mailing list >[email protected] >http://lists.meego.com/listinfo/meego-kernel _______________________________________________ MeeGo-kernel mailing list [email protected] http://lists.meego.com/listinfo/meego-kernel
