Re: Question: opreport error: No sample file found

[Yongheng Qi <je...@gm...>]

I have modify insmod oprofile timer=1, but

cat /dev/oprofile/cpu_type
mips/24K

I don't know why.

I can't where should set oprofile.timer=1 and how use it.

Please tell me.

Thanks

2009/12/7 Sam Liao <ph...@gm...>

> After use oprofile.timer=1, please make sure:
> cat /dev/oprofile/cpu_type is "timer".
>
> Or you did not actually make things work.
> For most condition this should work, which you can check by the
> /dev/oprofile/stats/cpu0/* files.
> We should get some samples in kernel.
>
> If timer mode can not make you get any sample yet, then I have no
> further suggestion, maybe you need update bsp or kernel.
>
> -Sam
> ---
>
>
> On Mon, Dec 7, 2009 at 1:19 PM, Yongheng Qi <je...@gm...> wrote:
> > I had try the .timer=1 at the mode parameters, but the result is the same
> > bad and the error message is the same.
> >
> > root@OpenWrt:/# opreport -l
> > opreport error: No sample file found: try running opcontrol --dump
> > or specify a session containing sample files
> >
> >
> > 2009/12/6 Yongheng Qi <je...@gm...>
> >>
> >> Dear sam
> >>
> >> How to set the oprofile.timer=1 ? where  set? Please tell me.
> >>
> >> Thanks
> >>
> >>
> >> 2009/12/6 Sam Liao <ph...@gm...>
> >>>
> >>> Please check the document, you can set to the timer mode from boot
> >>> line with "oprofile.timer=1" option.
> >>>
> >>> -Sam
> >>>
> >>> On Sun, Dec 6, 2009 at 2:56 PM, Yongheng Qi <je...@gm...> wrote:
> >>> > Dear Sam, Thanks your replay.
> >>> >
> >>> > 2009/12/5 Sam Liao <ph...@gm...>
> >>> >>
> >>> >> There are something you can try:
> >>> >>
> >>> >> 1. run oprofile on timer mode.
> >>> >
> >>> >     I run oprofile on openwrt, it not support modprole, on use
> insmod,
> >>> > I run
> >>> > insmode oproble timer =1, not purpose.
> >>> >
> >>> >>
> >>> >> 2. do not use session option, just opreport -l directly.
> >>> >
> >>> >    this I try to use , but the result is the same.
> >>> >
> >>> >>
> >>> >> 3. check kernel message.
> >>> >
> >>> >     kernel message I use dmesg  and logread, not message about
> oproble.
> >>> >
> >>> >>
> >>> >> 4. check oprofile stats under /dev/oprofile/stats directory.
> >>> >
> >>> >     in the /dev/oprofile/stats, all file value is 0.
> >>> >>
> >>> >> With these commands you can make sure it's a kernel problem or UP's
> >>> >> problem.
> >>> >>
> >>> >> -Sam
> >>> >>
> >>> >> On Fri, Dec 4, 2009 at 4:58 PM, Yongheng Qi <je...@gm...>
> wrote:
> >>> >> > I read the linux kernel profile document:
> >>> >> >
> >>> >> > Add "profile=2" to the kernel command line.
> >>> >> >
> >>> >> > Get the source (see Changes for required version) from
> >>> >> > http://oprofile.sourceforge.net/ and add "idle=poll" to the
> kernel
> >>> >> > command
> >>> >> > line.
> >>> >> >
> >>> >> > I don't know how to add the kernel command on the opewrt and
> emabled
> >>> >> > system.
> >>> >> >
> >>> >> > Thanks
> >>> >> >
> >>> >> > 2009/12/4 Joe Hewitt <joe...@gm...>
> >>> >> >>
> >>> >> >> I believe it supports or cpu_type won't be mips/24K.
> >>> >> >>
> >>> >> >>
> >>> >> >> Once you setup session-dir in --setup you don't have to setup it
> >>> >> >> again. It's strange that you can issue 'opcontrol --dump
> >>> >> >> --session-dir=/var/lib/oprofile', on my x64 box, this command
> >>> >> >> returns
> >>> >> >> 'Option "--setup" not valid with "--dump"'.
> >>> >> >>
> >>> >> >> what do you get if you 'cd /var/lib/oprofile/samples'?
> >>> >> >>
> >>> >> >> On Fri, Dec 4, 2009 at 10:23 AM, Yongheng Qi <je...@gm...>
> >>> >> >> wrote:
> >>> >> >> > OK, Thanks
> >>> >> >> >
> >>> >> >> > root@OpenWrt:/proc# cat /dev/oprofile/cpu_type
> >>> >> >> > mips/24K
> >>> >> >> >
> >>> >> >> > The oprofiled.log:
> >>> >> >> >
> >>> >> >> > Thu Jan  1 09:42:46 1970
> >>> >> >> >
> >>> >> >> > Nr. sample dumps: 6
> >>> >> >> > Nr. non-backtrace samples: 0
> >>> >> >> > Nr. kernel samples: 0
> >>> >> >> > Nr. lost samples (no kernel/user): 0
> >>> >> >> > Nr. lost kernel samples: 0
> >>> >> >> > Nr. incomplete code structs: 0
> >>> >> >> > Nr. samples lost due to sample file open failure: 0
> >>> >> >> > Nr. samples lost due to no permanent mapping: 0
> >>> >> >> > Nr. event lost due to buffer overflow: 0
> >>> >> >> > Nr. samples lost due to no mapping: 0
> >>> >> >> > Nr. backtraces skipped due to no file mapping: 0
> >>> >> >> > Nr. samples lost due to no mm: 0
> >>> >> >> > Nr. samples lost cpu buffer overflow: 0
> >>> >> >> > Nr. samples received: 0
> >>> >> >> > Nr. backtrace aborted: 0
> >>> >> >> > Nr. samples lost invalid pc: 0
> >>> >> >> >
> >>> >> >> > oprofile could support MIPS 24K?
> >>> >> >> >
> >>> >> >> > 2009/12/3 Joe Hewitt <joe...@gm...>
> >>> >> >> >>
> >>> >> >> >> You can attach your oprofiled.log, cat /dev/oprofile/cpu_type
> >>> >> >> >> and
> >>> >> >> >> the
> >>> >> >> >> command sequence etc. thus guys here can  help diagnosis.
> >>> >> >> >>
> >>> >> >> >> On Thu, Dec 3, 2009 at 2:13 PM, Yongheng Qi <
> je...@gm...>
> >>> >> >> >> wrote:
> >>> >> >> >> > Thanks Joe,
> >>> >> >> >> >
> >>> >> >> >> > I tried your commad , the result is same as before.
> >>> >> >> >> >
> >>> >> >> >> > root@OpenWrt:/tmp/lib/oprofile/samples# opreport
> >>> >> >> >> > session:foosession
> >>> >> >> >> > opreport error: No sample file found: try running opcontrol
> >>> >> >> >> > --dump
> >>> >> >> >> > or specify a session containing sample files
> >>> >> >> >> >
> >>> >> >> >> > Thanks
> >>> >> >> >> >
> >>> >> >> >> > 2009/12/3 Joe Hewitt <joe...@gm...>
> >>> >> >> >> >>
> >>> >> >> >> >> these 2:
> >>> >> >> >> >>
> >>> >> >> >> >> > opcontrol --dump --session-dir=/var/lib/oprofile
> >>> >> >> >> >> > opreport -l --session-dir=/var/lib/oprofile
> >>> >> >> >> >>
> >>> >> >> >> >> instead, try
> >>> >> >> >> >>
> >>> >> >> >> >> opcontrol --save=foosession
> >>> >> >> >> >> opreport session:foosession
> >>> >> >> >> >>
> >>> >> >> >> >> you can ref oprofile online doc for explanation and
> samples.
> >>> >> >> >> >>
> >>> >> >> >> >> On Thu, Dec 3, 2009 at 1:19 PM, Yongheng Qi
> >>> >> >> >> >> <je...@gm...>
> >>> >> >> >> >> wrote:
> >>> >> >> >> >> > Dear All:
> >>> >> >> >> >> >
> >>> >> >> >> >> > I am a newbie use oprifile. I run it on my openwrt , the
> >>> >> >> >> >> > kernel
> >>> >> >> >> >> > version
> >>> >> >> >> >> > is
> >>> >> >> >> >> > 2.6.26. run on a MIPS 24K cpu
> >>> >> >> >> >> >
> >>> >> >> >> >> > used oprofile version is 0.94. This is my command:
> >>> >> >> >> >> >
> >>> >> >> >> >> > opcontrol --init
> >>> >> >> >> >> > opcontrol --setup --event=CYCLES:5000:0:1:0
> >>> >> >> >> >> > --vmlinux=/etc/vmlinux
> >>> >> >> >> >> > --session-dir=/var/lib/oprofile
> >>> >> >> >> >> > opcontrol --start
> >>> >> >> >> >> >
> >>> >> >> >> >> > wait a monent, because I want to optimize linux kernel
> and
> >>> >> >> >> >> > driver,
> >>> >> >> >> >> > thay
> >>> >> >> >> >> > all
> >>> >> >> >> >> > run at kernel level.
> >>> >> >> >> >> >
> >>> >> >> >> >> > opcontrol --dump --session-dir=/var/lib/oprofile
> >>> >> >> >> >> > opreport -l --session-dir=/var/lib/oprofile
> >>> >> >> >> >> > then, the result is:
> >>> >> >> >> >> > opreport error: No sample file found: try running
> opcontrol
> >>> >> >> >> >> > --dump
> >>> >> >> >> >> > or specify a session containing sample files
> >>> >> >> >> >> >
> >>> >> >> >> >> > I try to a million times. and find many FAQ, don't solve.
> >>> >> >> >> >> > Anyone
> >>> >> >> >> >> > could
> >>> >> >> >> >> > help
> >>> >> >> >> >> > me?
> >>> >> >> >> >> >
> >>> >> >> >> >> > Thanks
> >>> >> >> >> >> >
> >>> >> >> >> >> > --
> >>> >> >> >> >> > Yongheng Qi
> >>> >> >> >> >> >
> >>> >> >> >> >> > Mobile: +86 1390 119 7481
> >>> >> >> >> >> >
> >>> >> >> >> >> >
> >>> >> >> >> >> >
> >>> >> >> >> >> >
> >>> >> >> >> >> >
> >>> >> >> >> >> >
> >>> >> >> >> >> >
> ------------------------------------------------------------------------------
> >>> >> >> >> >> > Join us December 9, 2009 for the Red Hat Virtual
> >>> >> >> >> >> > Experience,
> >>> >> >> >> >> > a free event focused on virtualization and cloud
> computing.
> >>> >> >> >> >> > Attend in-depth sessions from your desk. Your couch.
> >>> >> >> >> >> > Anywhere.
> >>> >> >> >> >> > http://p.sf.net/sfu/redhat-sfdev2dev
> >>> >> >> >> >> > _______________________________________________
> >>> >> >> >> >> > oprofile-list mailing list
> >>> >> >> >> >> > opr...@li...
> >>> >> >> >> >> >
> https://lists.sourceforge.net/lists/listinfo/oprofile-list
> >>> >> >> >> >> >
> >>> >> >> >> >> >
> >>> >> >> >> >>
> >>> >> >> >> >>
> >>> >> >> >> >>
> >>> >> >> >> >> --
> >>> >> >> >> >> Joe H
> >>> >> >> >> >
> >>> >> >> >> >
> >>> >> >> >> >
> >>> >> >> >> > --
> >>> >> >> >> > Yongheng Qi
> >>> >> >> >> >
> >>> >> >> >> > Mobile: +86 1390 119 7481
> >>> >> >> >> >
> >>> >> >> >>
> >>> >> >> >>
> >>> >> >> >>
> >>> >> >> >> --
> >>> >> >> >> Joe H
> >>> >> >> >
> >>> >> >> >
> >>> >> >> >
> >>> >> >> > --
> >>> >> >> > Yongheng Qi
> >>> >> >> >
> >>> >> >> > Mobile: +86 1390 119 7481
> >>> >> >> >
> >>> >> >>
> >>> >> >>
> >>> >> >>
> >>> >> >> --
> >>> >> >> Joe H
> >>> >> >
> >>> >> >
> >>> >> >
> >>> >> > --
> >>> >> > Yongheng Qi
> >>> >> >
> >>> >> > Mobile: +86 1390 119 7481
> >>> >> >
> >>> >> >
> >>> >> >
> >>> >> >
> ------------------------------------------------------------------------------
> >>> >> > Join us December 9, 2009 for the Red Hat Virtual Experience,
> >>> >> > a free event focused on virtualization and cloud computing.
> >>> >> > Attend in-depth sessions from your desk. Your couch. Anywhere.
> >>> >> > http://p.sf.net/sfu/redhat-sfdev2dev
> >>> >> > _______________________________________________
> >>> >> > oprofile-list mailing list
> >>> >> > opr...@li...
> >>> >> > https://lists.sourceforge.net/lists/listinfo/oprofile-list
> >>> >> >
> >>> >> >
> >>> >
> >>> >
> >>> >
> >>> > --
> >>> > Yongheng Qi
> >>> >
> >>> > Mobile: +86 1390 119 7481
> >>> >
> >>
> >>
> >>
> >> --
> >> Yongheng Qi
> >>
> >> Mobile: +86 1390 119 7481
> >
> >
> >
> > --
> > Yongheng Qi
> >
> > Mobile: +86 1390 119 7481
> >
>



-- 
Yongheng Qi

Mobile: +86 1390 119 7481