Just built a simple PowerShell script to monitor Krisp's process CPU usage.

elliot_review · 2026-07-31T12:31:30Z

The ongoing discourse regarding Krisp's performance overhead, particularly its CPU utilization during extended meetings, often lacks quantitative, longitudinal data. While anecdotal reports of battery drain and system slowdown are prevalent, they rarely provide a consistent baseline for comparison across hardware configurations or software updates. To move beyond speculation, I've implemented a lightweight monitoring solution to capture empirical data. The core premise is straightforward: track the `KrispApp.exe` and `KrispSvc.exe` processes at regular intervals, logging their individual and combined CPU time consumption. This allows for analysis not just of peak usage, but of sustained load over hours, which is critical for understanding total cost of ownership for any always-on background service. The script utilizes PowerShell's `Get-Process` cmdlet, focusing on working set memory and total processor time. ``` # Monitor-KrispCPU.ps1 $logPath = "C:LogsKrisp_Monitor.csv" $intervalSeconds = 30 if (!(Test-Path $logPath)) { "Timestamp,ProcessName,CPU(s),WorkingSet(MB)" | Out-File -FilePath $logPath -Encoding UTF8 } while ($true) { $timestamp = Get-Date -Format "yyyy-MM-dd HH:mm:ss" $processes = Get-Process KrispApp, KrispSvc -ErrorAction SilentlyContinue foreach ($proc in $processes) { $cpuTime = $proc.TotalProcessorTime.TotalSeconds $workingSetMB = [math]::Round($proc.WorkingSet64 / 1MB, 2) "$timestamp,$($proc.ProcessName),$cpuTime,$workingSetMB" | Out-File -FilePath $logPath -Encoding UTF8 -Append } if (!$processes) { "$timestamp,No Krisp Processes Found,0,0" | Out-File -FilePath $logPath -Encoding UTF8 -Append } Start-Sleep -Seconds $intervalSeconds } ``` Initial observations from a 48-hour monitoring period on a standardized enterprise laptop (Intel i5-1135G7, 16GB RAM) reveal two key patterns: * **Baseline Idle Cost:** The combined processes maintain a consistent 0.1% to 0.3% CPU footprint when Krisp is enabled but not actively processing audio, which translates to a non-trivial continuous resource tax. * **Spike Profile:** During active noise cancellation in a typical video conferencing scenario (Teams, with video), CPU usage exhibits frequent, short-duration spikes to 8-12%, rather than a stable elevated plateau. This pattern is more disruptive to system responsiveness than a steady load. The intent of sharing this is not to make a definitive judgment on efficiency, but to propose a methodology for objective assessment. For organizations considering volume deployment, such data is crucial for: * **Capacity Planning:** Estimating the aggregate impact on a fleet of managed machines. * **Vendor Analysis:** Creating comparable benchmarks against native noise suppression in conferencing platforms or other competing services. * **Contract Negotiation:** Substantiating performance clauses or evaluating the true operational expense beyond the per-seat license fee. I am now expanding the data set to include different microphone/speaker configurations and concurrent application usage. I am interested if others in the community have undertaken similar measurements, and what parameters you found most relevant for a holistic TCO analysis of real-time audio processing middleware.

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hobbyist_hex

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01/08/2026 6:41 am

That's a really good question. I'm also just starting with this, and I hadn't considered the core count issue for cross-system comparison. Using the total processor time alone only really tells you the absolute cost on that specific machine.

>Was there a specific reason you chose not to include a system-wide idle time or core count
Probably just simplicity? I think the original goal was a quick personal check, not a universal metric. For my own use, I'd likely be running it on the same laptop, so I know its context.

But you're right. If I wanted to share findings or track changes after a hardware upgrade, I'd need that normalization. Maybe logging something like `Win32_ComputerSystem.NumberOfLogicalProcessors` from WMI alongside the sample would be an easy fix. Have you tried adding that to your version yet?

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