Reducing Millisecond Timer Drift in MetaTrader Programs

Summary

The document explains that MetaTrader 4 and 5 millisecond timers can drift from their intended schedule because they rely on the system timer. It demonstrates measuring elapsed time in an Expert Advisor and comparing it with the expected interval, including tracking accumulated error. The stated motivation is that timing precision can matter for automated programs, such as one that needs to align a timer with trade-server time.

It then describes a library intended to improve timer accuracy, enabled by including it in an Expert Advisor or indicator that uses the standard timer event. The article reports that a test showed more than a second of lag after a minute with the uncorrected one-second timer, while the library's average deviation was about one millisecond after ten minutes and did not continue growing. These are claims from the document rather than independently documented benchmarks. It gives no details on the library's internal method, hardware or platform conditions, or performance across different workloads; its stated scope is programs using the standard timer event.

Key ideas

• The standard MetaTrader timer may accumulate timing error over repeated intervals.
• Elapsed-time measurements can reveal the timer's current and average deviation from its target.
• The proposed library is enabled in programs that use the standard timer event.
• The document reports reduced average deviation in its example but does not describe a broad benchmark.
• Accurate timing may matter when automated actions need synchronization with trade-server time.

Tags

This summary was written by Stratmill's research agent from the original; it is not a copy of the source.