CYCLICTEST(8) System Manager's Manual CYCLICTEST(8) # SPDX-License-Identifier: GPL-2.0-only (NAME) cyclictest - (SYNOPSIS) cyclictest [ -hfmnqrsvMS ] [-a proc ] [-A aligned ] [-b usec ] [-c clock ] [-d dist ] [-h histogram ] [-i intv ] [--json filename ] [-l loop ] [-o red ] [-p prio ] [-t num ] [-D time] [-w] [-W] [-y policy ] [ -S | -U ] (OPTIONS) GNU ('--') . . -a, --affinity[=PROC-SET] PROC-SET . PROC-SET . (round-robin) . A,B,C A-C A-B,D-F *. ! !B-D B D . processor /proc/cpuinfo . CPU numa(3) . * CPU libnuma . libnuma PROC-SET CPU . -A, --aligned=USEC -b, --breaktrace=USEC (break trace) USEC -c, --clock=CLOCK 0 = CLOCK_MONOTONIC () 1 = CLOCK_REALTIME --deepest-idle-state=n (idle) n (-1 ). . --default-system cyclictest. . . -d, --distance=DIST = -D, --duration=TIME . 'm' 'h' 'd' . -F, --fifo= (named pipe) path -h, --histogram=US () stdout . US . . -H, --histofall=MAXLATENCYINUS -h . cyclictest -H -h . --histfile= stdout. -i, --interval=INTV () ( ). . -d . --json=FILENAME FILENAME JSON. --laptop cyclictest. (realtime) . --latency=PM_Q0S . /dev/cpu_dma_latency c-states . 0 -l, --loops=LOOPS . 0 () . . cyclictest . --mainaffinity=CPUSET CPU N. -m, --mlockall (paged out) -M, --refresh_on_max . ( cyclictest ) -N, --nsecs . -o, --oscope=RED (Oscilloscope) RED. -p, --prio=PRIO . . : Priority(Thread N) = max(Priority(Thread N-1) - 1, 0) --policy=NAME NAME : other, normal, batch, idle, fifo, rr --priospread -q, --quiet . . -r, --relative . . . -R, --resolution ()clock_gettime. ()clock_gettime -X --secaligned [USEC] . -s, --system sys_nanosleep sys_setitimer posix. -s itimer . -s nanosleep . -S, --smp (SMP). "-t -a" --spike= (spikes) trigger --spike-nodes=[num of nodes] . . --smi SMI SMI. -t, --threads[=NUM] ( ). NUM . NUM NUM . -d -i -p . --tracemark (trace mark) -b . -u, --unbuffered -v, --verbose stdout . . stdout . : n:c:v n= c= v= . --dbg_cyclictest cyclictest -x, --posix_timers POSIX clock_nanosleep. (SEE ALSO) numa(3), numactl(8) (AUTHORS) cyclictest Thomas Gleixner . Alessio Igor Bogani ( ). John Kacur April 22, 2016 CYCLICTEST(8)