Icon of program: LatencyMon

LatencyMon for Windows

By ResplendenceFreeUser Rating

Key Details of LatencyMon

  • Check the system is suitable for processing real time audio.
  • Last updated on 7/22/2019
  • There have been 1 updates
  • Virus scan status:

    Clean (it's extremely likely that this software program is clean)


Enlarged image for LatencyMon

Editors' Review

Download.com staff

High ISR (Interrupted Service Routines) and DPC (Deferred Procedure Calls) latencies prevent your CPU from processing real-time digital audio efficiently (or at all, sometimes). LatencyMon from Resplendence is a free utility that checks your computer's ability to handle digital audio by measuring ISR and DPC execution times as well as hard page faults. It identifies the kernel modules and processes causing high latencies that lead to audio drop outs. LatencyMon also serves well as a simple ISR, DPC, or hard page fault monitor.

LatencyMon's plain but efficient interface has five tabs: Main, Stats, Processes, Drivers, and CPU. We clicked the Start button, and almost immediately LatencyMon delivered the (bad) news in a summary report bolstered by bar graphs: our dual-core Pentium 4-based system didn't have the chops to process raw digital audio and we were likely to experience the drop outs, clicks and pops typical of buffer under-runs. Digital clicks and pops make vinyl surface noise seem pleasant, so we considered ourselves warned. The test runs continuously until you stop it, so we clicked the Stop button, which enabled a Stats tab report summary we could save, copy, or print. The report offered specific recommendations for improving our system's ability to process audio, such as disabling our WLAN, updating the BIOS, and disabling CPU throttling controls. Under Processes, LatencyMon displayed all our system's running processes by file name, PID hard page faults, and other headings. The Drivers and CPU tabs offered similarly detailed reports. The program offers some useful options, such as the ability to select which logical cores to monitor, a tool to set ETW file size, and the ability to measure SMIs and CPU stalls and perform a CPU speed sanity check.

We ran LatencyMon on several PCs, with predictable results: newer, more-powerful machines with multicore CPUs fared best. We found that running LatencyMon after every tweak helped diagnose latency issues and verify the fixes. Whether you're setting up a studio or just want to know how your PC handles buffer-critical data like digital audio, LatencyMon's scans not only provide the data but also the answers.

What's new in version 6.71

  • LatencyMon would not start a second time
  • Windows 10 version number displayed
  • Several minor updates and changes have been applied

Explore More


Full Specifications

GENERAL
Release
July 22, 2019
Latest update
July 22, 2019
Version
6.71
OPERATING SYSTEMS
Platform
Windows
Operating System
Windows 7, Windows Vista, Windows Server, Windows 10
Additional Requirements
None
POPULARITY
Total Downloads
44,478
Downloads Last Week
10

Related Software


Developer's Description

Check the system is suitable for processing real time audio.

LatencyMon checks if a system running Windows is suitable for processing real time audio by measuring DPC and ISR execution times as well as hard page faults. It will provide a comprehensible report and find the kernel modules and processes responsible for causing audio latencies which result in drop outs. It also provides the functionality of an ISR monitor, DPC monitor, and a hard page fault monitor.

LatencyMon will display the execution time of each ISR, DPC routine and hard page fault and will resolve them to the drivers and processes responsible for executing them. It will create a comprehensible report but it will also represent all sampled data in a detailed manner allowing you to perform in-depth analysis.