1514f1c67SArnaldo Carvalho de Meloperf-trace(1) 2514f1c67SArnaldo Carvalho de Melo============= 3514f1c67SArnaldo Carvalho de Melo 4514f1c67SArnaldo Carvalho de MeloNAME 5514f1c67SArnaldo Carvalho de Melo---- 6514f1c67SArnaldo Carvalho de Meloperf-trace - strace inspired tool 7514f1c67SArnaldo Carvalho de Melo 8514f1c67SArnaldo Carvalho de MeloSYNOPSIS 9514f1c67SArnaldo Carvalho de Melo-------- 10514f1c67SArnaldo Carvalho de Melo[verse] 11514f1c67SArnaldo Carvalho de Melo'perf trace' 12*5e2485b1SDavid Ahern'perf trace record' 13514f1c67SArnaldo Carvalho de Melo 14514f1c67SArnaldo Carvalho de MeloDESCRIPTION 15514f1c67SArnaldo Carvalho de Melo----------- 16514f1c67SArnaldo Carvalho de MeloThis command will show the events associated with the target, initially 17514f1c67SArnaldo Carvalho de Melosyscalls, but other system events like pagefaults, task lifetime events, 18514f1c67SArnaldo Carvalho de Meloscheduling events, etc. 19514f1c67SArnaldo Carvalho de Melo 20*5e2485b1SDavid AhernThis is a live mode tool in addition to working with perf.data files like 21*5e2485b1SDavid Ahernthe other perf tools. Files can be generated using the 'perf record' command 22*5e2485b1SDavid Ahernbut the session needs to include the raw_syscalls events (-e 'raw_syscalls:*'). 23*5e2485b1SDavid AhernAlernatively, the 'perf trace record' can be used as a shortcut to 24*5e2485b1SDavid Ahernautomatically include the raw_syscalls events when writing events to a file. 25*5e2485b1SDavid Ahern 26*5e2485b1SDavid AhernThe following options apply to perf trace; options to perf trace record are 27*5e2485b1SDavid Ahernfound in the perf record man page. 28514f1c67SArnaldo Carvalho de Melo 29514f1c67SArnaldo Carvalho de MeloOPTIONS 30514f1c67SArnaldo Carvalho de Melo------- 31514f1c67SArnaldo Carvalho de Melo 32ac9be8eeSDavid Ahern-a:: 33514f1c67SArnaldo Carvalho de Melo--all-cpus:: 34514f1c67SArnaldo Carvalho de Melo System-wide collection from all CPUs. 35514f1c67SArnaldo Carvalho de Melo 362ae3a312SArnaldo Carvalho de Melo-e:: 372ae3a312SArnaldo Carvalho de Melo--expr:: 382ae3a312SArnaldo Carvalho de Melo List of events to show, currently only syscall names. 39b059efdfSArnaldo Carvalho de Melo Prefixing with ! shows all syscalls but the ones specified. You may 40b059efdfSArnaldo Carvalho de Melo need to escape it. 412ae3a312SArnaldo Carvalho de Melo 42c24ff998SArnaldo Carvalho de Melo-o:: 43c24ff998SArnaldo Carvalho de Melo--output=:: 44c24ff998SArnaldo Carvalho de Melo Output file name. 45c24ff998SArnaldo Carvalho de Melo 46514f1c67SArnaldo Carvalho de Melo-p:: 47514f1c67SArnaldo Carvalho de Melo--pid=:: 48514f1c67SArnaldo Carvalho de Melo Record events on existing process ID (comma separated list). 49514f1c67SArnaldo Carvalho de Melo 50ac9be8eeSDavid Ahern-t:: 51514f1c67SArnaldo Carvalho de Melo--tid=:: 52514f1c67SArnaldo Carvalho de Melo Record events on existing thread ID (comma separated list). 53514f1c67SArnaldo Carvalho de Melo 54ac9be8eeSDavid Ahern-u:: 55514f1c67SArnaldo Carvalho de Melo--uid=:: 56514f1c67SArnaldo Carvalho de Melo Record events in threads owned by uid. Name or number. 57514f1c67SArnaldo Carvalho de Melo 587c304ee0SArnaldo Carvalho de Melo-v:: 597c304ee0SArnaldo Carvalho de Melo--verbose=:: 607c304ee0SArnaldo Carvalho de Melo Verbosity level. 617c304ee0SArnaldo Carvalho de Melo 62ac9be8eeSDavid Ahern-i:: 63514f1c67SArnaldo Carvalho de Melo--no-inherit:: 64514f1c67SArnaldo Carvalho de Melo Child tasks do not inherit counters. 65514f1c67SArnaldo Carvalho de Melo 66ac9be8eeSDavid Ahern-m:: 67514f1c67SArnaldo Carvalho de Melo--mmap-pages=:: 6827050f53SJiri Olsa Number of mmap data pages (must be a power of two) or size 6927050f53SJiri Olsa specification with appended unit character - B/K/M/G. The 7027050f53SJiri Olsa size is rounded up to have nearest pages power of two value. 71514f1c67SArnaldo Carvalho de Melo 72ac9be8eeSDavid Ahern-C:: 73514f1c67SArnaldo Carvalho de Melo--cpu:: 74514f1c67SArnaldo Carvalho de MeloCollect samples only on the list of CPUs provided. Multiple CPUs can be provided as a 75514f1c67SArnaldo Carvalho de Melocomma-separated list with no space: 0,1. Ranges of CPUs are specified with -: 0-2. 76514f1c67SArnaldo Carvalho de MeloIn per-thread mode with inheritance mode on (default), Events are captured only when 77514f1c67SArnaldo Carvalho de Melothe thread executes on the designated CPUs. Default is to monitor all CPUs. 78514f1c67SArnaldo Carvalho de Melo 79ae9ed035SArnaldo Carvalho de Melo--duration: 80ae9ed035SArnaldo Carvalho de Melo Show only events that had a duration greater than N.M ms. 81ae9ed035SArnaldo Carvalho de Melo 821302d88eSArnaldo Carvalho de Melo--sched: 831302d88eSArnaldo Carvalho de Melo Accrue thread runtime and provide a summary at the end of the session. 841302d88eSArnaldo Carvalho de Melo 856810fc91SDavid Ahern-i 866810fc91SDavid Ahern--input 876810fc91SDavid Ahern Process events from a given perf data file. 886810fc91SDavid Ahern 894bb09192SDavid Ahern-T 904bb09192SDavid Ahern--time 914bb09192SDavid Ahern Print full timestamp rather time relative to first sample. 924bb09192SDavid Ahern 9350c95cbdSArnaldo Carvalho de Melo--comm:: 9450c95cbdSArnaldo Carvalho de Melo Show process COMM right beside its ID, on by default, disable with --no-comm. 9550c95cbdSArnaldo Carvalho de Melo 96514f1c67SArnaldo Carvalho de MeloSEE ALSO 97514f1c67SArnaldo Carvalho de Melo-------- 98514f1c67SArnaldo Carvalho de Melolinkperf:perf-record[1], linkperf:perf-script[1] 99