Hi all! I have two x86 PCs running with the RT_PREEMPT patch (2.6.33.x). Both PCs run a real time application with a thread that will be executed periodically every 1ms. For this I use a clock_nanosleep(CLOCK_MONOTONIC, TIMER_ABSTIME, &ts, NULL); within the application's main loop. The value of "ts" will be incremented after every call. Both PCs (PC-A, PC-B) are connected via Ethernet to a third PC (PC-C) that acts as NTP time server for the other PCs (PC-A and PC-B). My question is now: Does clock_nanosleep() consider a potential time drift that is corrected by NTP? Or: Will there be a significant drift between both PCs (PC-A, PC-B) by using this approach? As the application runs very long (hours or even days) I am looking for a solution that avoids large drifts between the two systems. Deltas of 1 or 2 ms are acceptable, but no time differences in tens of milliseconds. Thanks for any help or feedback on this question Best regards Mathias -- To unsubscribe from this list: send the line "unsubscribe linux-rt-users" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
