This is the mail archive of the
systemtap@sourceware.org
mailing list for the systemtap project.
Re: No output from trace file after a few hours
- From: Daniel Doron <danielmeirdoron at gmail dot com>
- To: Arkady <arkady dot miasnikov at gmail dot com>
- Cc: systemtap at sourceware dot org
- Date: Thu, 15 Jun 2017 11:59:04 +0300
- Subject: Re: No output from trace file after a few hours
- Authentication-results: sourceware.org; auth=none
- References: <CAFwN=+ywma7CvB6AajmEb99LKZkTg9fWP724to6r=FrKrB0stQ@mail.gmail.com> <CANA-60qKnB_x4UuPfej_H2ebkHNXepmqpE+dgnOT=kOV6MYbqw@mail.gmail.com> <CANA-60oP_i=0oCQ1e73B_96juT1gW10d2Q7yps_r-jPyo=AJKQ@mail.gmail.com> <CAFwN=+xs21q38vf_ZNN-QAr5-EOfSkoKUx-e3u8PaZ=GKOkkdA@mail.gmail.com> <CAFwN=+yn+TGsHKNmoCJBaqeJakRG=XS8uVGbN8a16a0z3UdXmQ@mail.gmail.com> <CAFwN=+xMd=iXUw79A0WkpjHY1Vii3tFzWh4=5vS7f9qdtfdSAQ@mail.gmail.com> <CAFwN=+x34nb0ZYBW1wYB=-4m-Ctyrd-tkT4wXS0bcDTdBNaOtg@mail.gmail.com> <CANA-60pBnzZrAkg_WJ1bLr+e1atAGeFbUcbU_ffrW=hTj0Q+dw@mail.gmail.com> <CAFwN=+w2u+QpZyPavfxf2i+QsrhaHbSnRcGzYLPOpLwK4TA4vA@mail.gmail.com> <CANA-60o1VWpywY6-YZCuyjHYVXxakRoZ4f=JnD9rRERH-rpjQA@mail.gmail.com>
On that specific kernel about 8-10 hours.
On my machine with latest kernel, been running for 24 hours.
I need to check other distros.
sudo stap -v -F -m mymodule test.stp
On Thu, Jun 15, 2017 at 11:26 AM, Arkady <arkady.miasnikov@gmail.com> wrote:
> Do you do something like
>
> sudo stap -F -o ./test.log -S 1,2 test.stp ?
>
> On Thu, Jun 15, 2017 at 11:25 AM, Daniel Doron
> <danielmeirdoron@gmail.com> wrote:
>> On that specific kernel about 8-10 hours.
>> On my machine with latest kernel, been running for 24 hours.
>> I need to check other distros.
>>
>> On Jun 15, 2017 11:18, "Arkady" <arkady.miasnikov@gmail.com> wrote:
>>>
>>> How long time it runs for you?
>>>
>>> On Thu, Jun 15, 2017 at 10:38 AM, Daniel Doron
>>> <danielmeirdoron@gmail.com> wrote:
>>> > Systemtap translator/driver (version 2.9/0.164, rpm 2.9-7.el6)
>>> > Copyright (C) 2005-2015 Red Hat, Inc. and others
>>> > This is free software; see the source for copying conditions.
>>> > enabled features: AVAHI LIBRPM LIBSQLITE3 NLS NSS TR1_UNORDERED_MAP
>>> >
>>> > On Thu, Jun 15, 2017 at 10:37 AM, Daniel Doron
>>> > <danielmeirdoron@gmail.com> wrote:
>>> >> BTW kernel version: 2.6.32-431.el6.x86_64
>>> >>
>>> >> On Thu, Jun 15, 2017 at 10:36 AM, Daniel Doron
>>> >> <danielmeirdoron@gmail.com> wrote:
>>> >>> if you mean that the kernel version does not get upgraded, then yes.
>>> >>>
>>> >>> On Thu, Jun 15, 2017 at 10:34 AM, Daniel Doron
>>> >>> <danielmeirdoron@gmail.com> wrote:
>>> >>>> Sorry, I do not know what you mean by that...
>>> >>>>
>>> >>>> On Thu, Jun 15, 2017 at 10:32 AM, Arkady <arkady.miasnikov@gmail.com>
>>> >>>> wrote:
>>> >>>>> Do you have the kernel version pinned?
>>> >>>>>
>>> >>>>> On Thu, Jun 15, 2017 at 10:12 AM, Arkady
>>> >>>>> <arkady.miasnikov@gmail.com> wrote:
>>> >>>>>> Please send the stap script
>>> >>>>>>
>>> >>>>>> On Thu, Jun 15, 2017 at 10:10 AM, Daniel Doron
>>> >>>>>> <danielmeirdoron@gmail.com> wrote:
>>> >>>>>>> Hi,
>>> >>>>>>>
>>> >>>>>>> I built my module to probe a few system calls and functions.
>>> >>>>>>> Nothing
>>> >>>>>>> fancy, no big work in it, just prints some data. Then I wrote a
>>> >>>>>>> simple
>>> >>>>>>> python script to read data directly off the
>>> >>>>>>> /sys/kernel/debug/systemtap/mymodule/trace0 file (of course
>>> >>>>>>> running as
>>> >>>>>>> sudo)
>>> >>>>>>> I run stap in Flight recorder mode.
>>> >>>>>>> After a few hours (varies from 8 to 20) I stop getting any output
>>> >>>>>>> from
>>> >>>>>>> the module...
>>> >>>>>>> Any idea how to check why that is?
>>> >>>>>>> dmesg does not report anything unusual...
>>> >>>>>>>
>>> >>>>>>> Thanks.
>>> >>>>>>> Daniel.