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Re: No output from trace file after a few hours
- From: Arkady <arkady dot miasnikov at gmail dot com>
- To: Daniel Doron <danielmeirdoron at gmail dot com>
- Cc: systemtap at sourceware dot org
- Date: Thu, 15 Jun 2017 10:32:55 +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>
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.