Now that --laptop is explicitly obsoleted and --default-system is recommended as its replacement, better formulate the latter's help text. Signed-off-by: Ahmed S. Darwish <darwi@xxxxxxxxxxxxx> --- src/cyclictest/cyclictest.8 | 8 +++++--- 1 file changed, 5 insertions(+), 3 deletions(-) diff --git a/src/cyclictest/cyclictest.8 b/src/cyclictest/cyclictest.8 index aff900d..6982234 100644 --- a/src/cyclictest/cyclictest.8 +++ b/src/cyclictest/cyclictest.8 @@ -75,9 +75,11 @@ display a usage message and exit. . .TP .B \-\-default\-system -Don't attempt to tune the system from cyclictest. Power management is not -suppressed. This might give poorer results, but will allow you to discover -if you need to tune the system. +Stop cyclictest from force-tuning the system. Without this option, +cyclictest writes a value of 0 to /dev/cpu_dma_latency, which prevents the +CPU from entering deep sleep states. While such force-tuning might help at +showing lower latency numbers, it obscures the fact that the system may +require additional tuning. . .TP .B \-\-latency=PM_Q0S -- 2.49.0
