NAME

       uftrace-info - Print tracing information from the current trace data file

SYNOPSIS

       uftrace info [options]

DESCRIPTION

       This command prints metadata recorded in the header of a given trace data file.

       Alternatively, it can:

       • be used to generate a symbol table of the traced symbols

       • print a task relationship tree for the recorded tasks in the trace

OPTIONS

       --symbols [EXECUTABLE]
              Generate  a  symbol  table  for the given traced EXECUTABLE from the recorded trace
              data.  See the example below for the output format: It will print two symbol tables
              -  normal  symbols  and dynamic symbols: The normal symbols are traced functions in
              the executable itself.  The  dynamic  symbols  are  the  traced  library  functions
              recorded  in  the  trace.   Because  only the trace data is used to generate symbol
              information, it will contain different functions  than  the  symbol  table  of  the
              executable file itself.

       --task Print a task relationship tree instead of the trace metadata.

EXAMPLES

       This command shows information like below:

              $ uftrace record abc

              $ uftrace info
              # system information
              # ==================
              # program version     : v0.9 ( dwarf python tui perf sched )
              # recorded on         : Wed Sep 19 17:30:39 2018
              # cmdline             : uftrace record abc
              # cpu info            : Intel(R) Core(TM) i7-3930K CPU @ 3.20GHz
              # number of cpus      : 12 / 12 (online / possible)
              # memory info         : 19.8 / 23.5 GB (free / total)
              # system load         : 0.02 / 0.07 / 0.11 (1 / 5 / 15 min)
              # kernel version      : Linux 4.5.4-1-ARCH
              # hostname            : sejong
              # distro              : "Arch Linux"
              #
              # process information
              # ===================
              # number of tasks     : 1
              # task list           : 8284(abc)
              # exe image           : /home/namhyung/tmp/abc
              # build id            : a3c50d25f7dd98dab68e94ef0f215edb06e98434
              # pattern             : regex
              # exit status         : exited with code: 0
              # elapsed time        : 0.003219479 sec
              # cpu time            : 0.003 / 0.000 sec (sys / user)
              # context switch      : 1 / 1 (voluntary / involuntary)
              # max rss             : 3104 KB
              # page fault          : 0 / 169 (major / minor)
              # disk iops           : 0 / 24 (read / write)

       To see the symbol table, one can use the --symbols option.

              $ uftrace info --symbols
              Normal symbols
              ==============
              [ 0] _start (0x400590) size: 42
              [ 1] __gmon_start__ (0x4005c0) size: 59
              [ 2] a (0x4006c6) size: 19
              [ 3] b (0x4006d9) size: 19
              [ 4] c (0x4006ec) size: 49
              [ 5] main (0x40071d) size: 19
              [ 6] __libc_csu_init (0x400730) size: 101
              [ 7] __libc_csu_fini (0x4007a0) size: 2
              [ 8] atexit (0x4007b0) size: 41

              Dynamic symbols
              ===============
              [ 0] getpid (0x400530) size: 16
              [ 1] _mcleanup (0x400540) size: 16
              [ 2] __libc_start_main (0x400550) size: 16
              [ 3] __monstartup (0x400560) size: 16
              [ 4] mcount (0x400570) size: 16
              [ 5] __cxa_atexit (0x400580) size: 16

       The --task option shows task family hierarchy.

              $ uftrace info --task
              [166399] parent
                    [166401] child

SEE ALSO

       uftrace(1), uftrace-record(1), uftrace-tui(1)

AUTHORS

       Namhyung Kim <namhyung@gmail.com>.