Re: what happens to my ltt-statedump?

* yuanbor ([email protected]) wrote:
> 
>    from some document,I know that ltt-statedump can get following events:
> 
>    --------------------------------------------------
> 
>    Event: enumerate_file_descriptors
>     List of open file descriptors
>     name File name PID Process identifier fd File descriptor index in
>    this process's task_struct
>    Event: enumerate_vm_maps
>     List of active vm maps
>     PID Process identifier start VM's start address end VM's end address
>    flags VM area flags pgoff VM's page offset inode Inode associated with
>    this VM
>    Event: enumerate_modules
>     List of loaded kernel modules
>     name Module name state Module's state ref Number of references to
>    this module
>    Event: enumerate_interrupts
>     List of registered interrupts
>     name Interrupt name action action triggered by interrupt num
>    Interrupt number
>    Event: enumerate_process_state
>     State of each process when statedump is performed
>     pid Process identifier parent_pid Parent process identifier name
>    Process name mode Execution mode submode Execution submode status
>    Process status
>    Event: statedump_end
>     Kernel state dump complete
> 
>    --------------------------------------------------
> 
> 
> 
>    so, I execute following cmd to get some traces
> 
>    #-----------------------------------------------------
>    /sbin/modprobe ltt-control
>    /sbin/modprobe ltt-probe-core
>    /sbin/modprobe ltt-statedump
> 

Shouldn't you modprobe ltt-probe-list or something like that ?

> 
>    lttctl -n statedump -d -l /mnt/debugfs/ltt -t /tmp/trace
> 
>    rm -f tmp/*
>    ./file
> 
>    lttctl -n statedump -R
> 
> 
>    /sbin/rmmod ltt-statedump
>    /sbin/rmmod ltt-probe-core
>    /sbin/rmmod ltt-control
>    #-----------------------------------------------------
> 
> 
> 
>    but,after these cmd,when I run 'lttv -m textDump -t /tmp/trace',I just
>    get these:
> 
>    -------------------------------------------------------
> 
> 
>    ** (process:2771): WARNING **: Facility checksum mismatch for facility
>    core : kernel 0xB96B8A8D vs XML 0x1212DF53
> 
>    Trace set contains 1 traces
> 
>    core.state_dump_facility_load: 1827.685470503
>    (/home/yuanbor/trace/statedump/1184614014/control/facilities_0), 0, 0,
>    UNNAMED, UNBRANDED, 0, 0x0, MODE_UNKNOWN { "core", 3110832781, 0, 4,
>    4, 4, 4, 4 }
>    End trace set
> 
>    Traceset statistics:
> 
>    statistics summed: 1
>    mode_types:
>      MODE_UNKNOWN:
>        submodes:
>          UNKNOWN:
>            event_types:
>            events count: 0
>        events:
>        mode_types:
>          event_types:
>          events count: 0
>    event_types:
>    events count: 0
>      processes:
>        unknown process:
>          cpu:
>            0:
>              functions:
>                0x0:
>                  mode_types:
>                    MODE_UNKNOWN:
>                      submodes:
>                        UNKNOWN:
>                          event_types:
>                          events count: 0
>                      events:
>                      mode_types:
>                        event_types:
>                        events count: 0
>                  event_types:
>                  events count: 0
>              mode_types:
>                MODE_UNKNOWN:
>                  submodes:
>                    UNKNOWN:
>                      event_types:
>                      events count: 0
>                  events:
>                  mode_types:
>                    event_types:
>                    events count: 0
>              event_types:
>              events count: 0
>            1:
>              functions:
>                0x0:
>                  mode_types:
>                    MODE_UNKNOWN:
>                      submodes:
>                        UNKNOWN:
>                          event_types:
>                          events count: 0
>                      events:
>                      mode_types:
>                        event_types:
>                        events count: 0
>                  event_types:
>                  events count: 0
>              mode_types:
>                MODE_UNKNOWN:
>                  submodes:
>                    UNKNOWN:
>                      event_types:
>                      events count: 0
>                  events:
>                  mode_types:
>                    event_types:
>                    events count: 0
>              event_types:
>              events count: 0
>          mode_types:
>            MODE_UNKNOWN:
>              submodes:
>                UNKNOWN:
>                  event_types:
>                  events count: 0
>              events:
>              mode_types:
>                event_types:
>                events count: 0
>          event_types:
>          events count: 0
>      statistics summed: 1
>      cpu:
>        0:
>          mode_types:
>            MODE_UNKNOWN:
>              submodes:
>                UNKNOWN:
>                  event_types:
>                  events count: 0
>              events:
>              mode_types:
>                event_types:
>                events count: 0
>          event_types:
>          events count: 0
>        1:
>          mode_types:
>            MODE_UNKNOWN:
>              submodes:
>                UNKNOWN:
>                  event_types:
>                  events count: 0
>              events:
>              mode_types:
>                event_types:
>                events count: 0
>          event_types:
>          events count: 0
>      mode_types:
>        MODE_UNKNOWN:
>          submodes:
>            UNKNOWN:
>              event_types:
>              events count: 0
>          events:
>          mode_types:
>            event_types:
>            events count: 0
>      event_types:
>      events count: 0
> 
>    -------------------------------------------------------

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-- 
Mathieu Desnoyers
Computer Engineering Ph.D. Student, Ecole Polytechnique de Montreal
OpenPGP key fingerprint: 8CD5 52C3 8E3C 4140 715F  BA06 3F25 A8FE 3BAE 9A68