Advances in Computer Engineering / 2015 / Article / Tab 3

Research Article

Linux Low-Latency Tracing for Multicore Hard Real-Time Systems

Table 3

Statistics per loop, in nanoseconds, generated by npt on both standard and PREEMPT_RT patched kernels for both writer and timer versions of LTTng-UST.

Kernel Latencies in ns
Standard PREEMPT_RT patched

LTTng-UST 2.2 Writer Timer Writer Timer

Minimum 270.0369.4262.5258.0
Mean 498.2424.2497.6286.8
Maximum 82 180756935 2606409

Variance 3.6201.0634.8720.4541
std deviation 60.1732.6069.8021.31

Article of the Year Award: Outstanding research contributions of 2020, as selected by our Chief Editors. Read the winning articles.