"After more than 1 million measurement cycles, the internal worst-case latency was only 47 us, reports Emde. This was despite the fact that the test ran the X Window systen on a hardware-accelerated graphics board, "with heavy use of the entire system including video and audio playback during more than a day," he adds. Additionally, the system enduring ping floods and other network harassment during the trial.
"Emde also reports on a second test running on an Intel Core 2 at 2.4GHz with a 64-bit kernel, which resulted in an internal worst-case latency of 39 us. This is still not in the single-digit latency neighborhood of true hardened real-time operating systems (RTOSes), but it is certainly an impressive showing for a multimedia-enabled Linux environment."
