diff options
Diffstat (limited to 'src/cyclictest/cyclictest.c')
| -rw-r--r-- | src/cyclictest/cyclictest.c | 35 |
1 files changed, 18 insertions, 17 deletions
diff --git a/src/cyclictest/cyclictest.c b/src/cyclictest/cyclictest.c index 158bced..9021670 100644 --- a/src/cyclictest/cyclictest.c +++ b/src/cyclictest/cyclictest.c @@ -1276,17 +1276,16 @@ static void display_help(int error) " 0 = CLOCK_MONOTONIC (default)\n" " 1 = CLOCK_REALTIME\n" "-C --context context switch tracing (used with -b)\n" - "-d DIST --distance=DIST distance of thread intervals in us default=500\n" - "-D --duration=t specify a length for the test run\n" - " default is in seconds, but 'm', 'h', or 'd' maybe added\n" - " to modify value to minutes, hours or days\n" + "-d DIST --distance=DIST distance of thread intervals in us, default=500\n" + "-D --duration=TIME specify a length for the test run.\n" + " Append 'm', 'h', or 'd' to specify minutes, hours or days.\n" " --latency=PM_QOS write PM_QOS to /dev/cpu_dma_latency\n" "-E --event event tracing (used with -b)\n" "-f --ftrace function trace (when -b is active)\n" "-F --fifo=<path> create a named pipe at path and write stats to it\n" "-h --histogram=US dump a latency histogram to stdout after the run\n" - " (with same priority about many threads)\n" - " US is the max time to be be tracked in microseconds\n" + " US is the max latency time to be be tracked in microseconds\n" + " This option runs all threads at the same priority.\n" "-H --histofall=US same as -h except with an additional summary column\n" " --histfile=<path> dump the latency histogram to <path> instead of stdout\n" "-i INTV --interval=INTV base interval of thread in us default=1000\n" @@ -1296,7 +1295,8 @@ static void display_help(int error) " This will give you poorer realtime results\n" " but will not drain your battery so quickly\n" "-m --mlockall lock current and future memory allocations\n" - "-M --refresh_on_max delay updating the screen until a new max latency is hit\n" + "-M --refresh_on_max delay updating the screen until a new max\n" + " latency is hit. Userful for low bandwidth.\n" "-n --nanosleep use clock_nanosleep\n" " --notrace suppress tracing\n" "-N --nsecs print results in ns instead of us (default us)\n" @@ -1304,20 +1304,23 @@ static void display_help(int error) "-O TOPT --traceopt=TOPT trace option\n" "-p PRIO --priority=PRIO priority of highest prio thread\n" "-P --preemptoff Preempt off tracing (used with -b)\n" - "-q --quiet print only a summary on exit\n" - " --priospread spread priority levels starting at specified value\n" + " --policy=NAME policy of measurement thread, where NAME may be one\n" + " of: other, normal, batch, idle, fifo or rr.\n" + " --priospread spread priority levels starting at specified value\n" + "-q --quiet print a summary only on exit\n" "-r --relative use relative timer instead of absolute\n" "-R --resolution check clock resolution, calling clock_gettime() many\n" - " times. list of clock_gettime() values will be\n" + " times. List of clock_gettime() values will be\n" " reported with -X\n" - " --secaligned [USEC] align thread wakeups to the next full second,\n" + " --secaligned [USEC] align thread wakeups to the next full second\n" " and apply the optional offset\n" "-s --system use sys_nanosleep and sys_setitimer\n" "-S --smp Standard SMP testing: options -a -t -n and\n" " same priority of all threads\n" - " --spike=trigger record all spikes > trigger\n" - " --spike-nodes these are the number of spikes we can record\n" - " the default is 1024 if not specified\n" + " --spike=<trigger> record all spikes > trigger\n" + " --spike-nodes=[num of nodes]\n" + " These are the maximum number of spikes we can record.\n" + " The default is 1024 if not specified\n" #ifdef ARCH_HAS_SMI_COUNTER " --smi Enable SMI counting\n" #endif @@ -1337,9 +1340,7 @@ static void display_help(int error) " format: n:c:v n=tasknum c=count v=value in us\n" "-w --wakeup task wakeup tracing (used with -b)\n" "-W --wakeuprt rt task wakeup tracing (used with -b)\n" - " --dbg_cyclictest print info useful for debugging cyclictest\n" - " --policy=POLI policy of realtime thread, POLI may be fifo(default) or rr\n" - " format: --policy=fifo(default) or --policy=rr\n", + " --dbg_cyclictest print info useful for debugging cyclictest\n", tracers ); if (error) |