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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 10:36:57 +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>
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.