Dude, Where's My Ram?
A professional, ultra-light RAM and VRAM monitor built directly into the VS Code Explorer sidebar.
Dude, Where's My Ram? gives developers immediate visibility into memory pressure while coding, running terminals, debugging, and using AI tooling, without opening external dashboards or heavyweight monitoring apps.
Why This Extension Stands Out
Most memory monitors add the exact overhead you are trying to avoid. This extension was engineered for low-footprint operation by combining native OS telemetry with a lean webview interface.
- No heavy metrics SDKs
- No large runtime dependency chain
- No constant high-frequency polling
- No external background service to install
Instead, it uses:
- Native Node.js system calls for RAM usage
- Lightweight shell command fallbacks for GPU memory
- A low-frequency telemetry interval
- A compact, theme-aware VS Code webview UI
The result is responsive, practical monitoring that stays out of your way.
Implemented Features
The extension includes integrated visual branding assets for both editor UX and Marketplace presentation:
- Marketplace icon registration via
icon in package metadata
- View icon registration for Explorer contribution
- Branded webview header with logo and title
- Secure local media loading through VS Code webview URI conversion
How it works:
- Assets are served from the
media/ directory
- Extension code converts local image paths into trusted webview-safe URIs with
asWebviewUri
- Header image loading supports
.png, .jpg, and .jpeg
Benefit for Users:
- A more professional, instantly recognizable product presence in both Marketplace and sidebar panel.
1) Real-Time System RAM Tracking
The extension continuously reports:
- Total physical system memory (GB)
- Currently used memory (GB)
- Visual utilization bar with live updates
How it works:
- Reads total memory from the OS via
os.totalmem()
- Reads free memory via
os.freemem()
- Computes used memory as total minus free
- Converts values to one-decimal GB precision for clean readability
Benefit for Users:
- Instantly see when your current workload is memory-bound before the editor or build tools degrade.
2) Cross-Vendor VRAM Detection (NVIDIA, AMD, Intel)
The extension includes graceful, multi-path GPU memory discovery:
NVIDIA Path (Primary)
- Uses
nvidia-smi to read GPU total and used memory
- Parses telemetry and converts MB to GB
- Labels source as NVIDIA
Windows AMD/Intel Path (Primary → Fallback)
- Primary: Uses PowerShell
Get-CimInstance Win32_VideoController to read AdapterRAM and controller name without relying on deprecated tooling
- Fallback: Uses legacy
wmic path win32_VideoController if the PowerShell path fails
- Handles integrated and dynamic allocation scenarios by reporting pool size
- All subprocess calls carry explicit timeouts to prevent blocking the extension host
Linux Non-NVIDIA Path (Fallback Chain)
- Primary: Reads
/sys/class/drm/card*/device/mem_info_vram_total and mem_info_vram_used from the DRM sysfs tree (works on AMD without userspace tooling)
- Secondary: Falls back to
rocm-smi --showmeminfo vram --csv for ROCm-capable AMD hardware
- Last resort: Parses
glxinfo total video memory output when neither sysfs nor ROCm is available
Benefit for Users:
- Works across mixed hardware environments and degrades gracefully when exact used VRAM is unavailable.
3) Intelligent Degradation Instead of Broken UI
When exact VRAM usage cannot be retrieved, the extension does not fail.
It automatically switches display mode:
- Shows memory pool capacity
- Marks allocation as dynamic/shared
- Keeps interface stable and informative
Benefit for Users:
- Reliable behavior across desktops, laptops, integrated GPUs, and constrained environments.
4) VS Code-Native Visual Design
The sidebar view is designed to feel native and polished:
- Uses VS Code theme tokens for adaptive compatibility
- Displays compact metric headers and numeric labels
- Uses smooth animated progress transitions
- Applies threshold-based status colors with gradient fills and matching glow effects
- Renders metric cards with glassmorphism depth gradients and hover glow
- Uses orange accent color (
#ff8c00) for the "System Performance" header title and Clean button border
- Shows gradient-filled area under telemetry curves for a premium sparkline aesthetic
- Enforces strict no-scroll containment at root layout level so the panel remains physically locked with zero scrollbar jitter
- Uses tighter header spacing and shorter metric cards so both RAM and GPU VRAM rows remain fully visible in constrained sidebar heights
- Uses responsive clamp-based sizing for header, buttons, and metric rows so the UI auto-compacts on short sidebars without cutting off the lower half
Benefit for Users:
- A clean, readable dashboard that blends with existing editor themes and workflows.
5) Low-Overhead Polling Engine
Telemetry updates are intentionally tuned for practical efficiency:
- Enforced performance throttle window of 2000ms to 2500ms for stable, low-overhead background operation
- Non-overlapping polling guard to prevent stacked async telemetry probes when one cycle runs long
- Flattened telemetry payload keys for lower-cost serialization across the extension host → webview bridge
- Interval cleanup on view disposal
- Includes optional profiling hooks that measure host tick duration, webview update handling time, draw-call cost, and skipped draws for idle-vs-hover benchmarking
Benefit for Users:
- Continuous visibility without creating noisy CPU churn or memory spikes.
6) Defensive Data Handling for Stability
The implementation includes runtime hardening to avoid malformed UI states:
- Safe parsing for command output
- Numeric coercion and validation before rendering
- Width clamping for progress bars to avoid invalid percentages
- Fallback values for unknown or unsupported hardware responses
Benefit for Users:
- Fewer edge-case failures and a cleaner experience in real-world machines.
7) Customizable Warning Thresholds
The extension exposes user-facing settings so each developer can tune alert levels to match workload:
dudeWheresMyRam.warnThreshold controls when bars turn yellowdudeWheresMyRam.dangerThreshold controls when bars turn reddudeWheresMyRam.updateInterval controls telemetry polling frequency
How it works:
- Settings are registered in VS Code configuration
- Values are read through
vscode.workspace.getConfiguration('dudeWheresMyRam')
- Live config changes are applied without restart
Benefit for Users:
- Power users can align alerts to the exact pressure point that matters on their machine.
8) Tiny Real-Time History Sparklines
The UI includes lightweight canvas-based trend lines for RAM and VRAM.
How it works:
- Keeps tiny in-memory history buffers
- Draws directly on HTML5 canvas without external chart libraries
- Uses current utilization level to color trend lines
- Renders in floating hover popups for each metric row to preserve compact layout
- Uses explicit popup visual identity: dark graph background, blue titles, white live metric readouts, and yellow graph axis labels
- Renders a telemetry-style grid with visible left-axis GB values and bottom-axis millisecond time markers
- Applies high-DPI canvas scaling for crisp popup graph lines, grid lines, and axis labels on high-resolution displays
- Caches device pixel ratio in the webview and refreshes it on resize instead of re-reading browser context every draw pass
- Supports both direct
used metrics and total - free fallback calculations for robust compatibility
- Uses body-level global popup portals so telemetry windows can float over the full sidebar UI instead of being constrained by row layout bounds
- Uses full-viewport hover overlays that pin to all four webview edges so telemetry can take over the extension area without clipping
- Uses flexible metric row growth (
flex: 1 1 auto) with a hard readability floor so cards expand with available space instead of collapsing
- Uses simplified hover trigger logic so CSS owns overlay sizing and positioning while JavaScript only toggles visibility and redraw timing
- Restores high-visibility internal metric typography (
11px labels and 12px value badges) so RAM/VRAM readings remain readable at a glance
- Thickens utilization rails to
6px with stronger contrast so status color changes are visible instantly
- Keeps sidebar VRAM label fixed as GPU VRAM while displaying live vendor architecture in the popup measurement header
- Restores a no-hardware fallback state that displays No GPU Detected and renders an animated ECG-style heartbeat waveform in the VRAM telemetry popup
- Uses lazy graph rendering gates so canvas redraws only occur while the RAM/VRAM popup is visible
- Applies a gradient fill area under the active trace for a premium telemetry aesthetic
- Uses rounded line caps and smooth cubic-bezier transitions on bar fills for polished motion
- Adds subtle scanline and coordinate-mesh layers for a high-end telemetry HUD look without changing data behavior
- Renders a live targeting crosshair ring on the latest data point for clearer current-value focus
- Renders gradient status bars (green → bright green, yellow → gold, red → crimson) with matching glow effects
- Applies glassmorphism-style metric cards with depth gradients, inset highlight, and ambient glow on hover
- Implements Content Security Policy meta tag for webview security hardening, with CSP source injected at load time by the extension host
Benefit for Users:
- A fast visual signal of whether memory is stable, climbing, or spiking.
The sidebar header includes compact actions for maintenance tasks.
Available actions:
- Clean: clears the GPU detection cache, resets telemetry history, and forces an immediate fresh repoll — useful when switching GPUs or recovering from a bad detection result
- Kill Terminals: launches terminal shutdown command when memory pressure becomes extreme (appears automatically above 95% RAM usage)
- Dump Performance Stats: available from the Command Palette (
Dude, Where's My Ram?: Dump Performance Stats) and via Shift+Click on Clean for ad-hoc profiling snapshots
How it works:
- Webview buttons send messages to extension host
- Extension executes VS Code commands in response
Benefit for Users:
- Less menu hunting when a runaway task needs immediate attention.
10) Permanent Status Bar Mirroring
The extension mirrors RAM usage in the VS Code status bar so visibility remains when Explorer is collapsed.
How it works:
- Registers a right-aligned Status Bar Item
- Updates text alongside the polling cycle
- Click focuses Explorer and opens monitor view
Benefit for Users:
- Memory awareness stays visible at all times while coding.
Architecture Overview
The extension ships as a small, maintainable structure:
package.json
Registers metadata, commands, settings, Explorer contribution, and icons.
src/extension.js
Handles activation, telemetry collection, OS-specific GPU strategy, media URI generation, quick actions, and status mirroring.
media/webview.html
Renders branded header, action controls, sparklines, bars, labels, and dynamic state transitions.
Design goal:
- Keep background logic simple, transparent, and fast.
Current Version Summary
Version 1.0.5 – Production Layout Stability
Core Promise: fast, practical, low-footprint RAM and VRAM visibility directly in VS Code.
What's Fixed:
- Resolved production .vsix webview layout clipping that occurred on certain VS Code versions and sidebar heights
- Applied production-hardened CSS flexbox model with explicit metric container heights and bottom safety buffer
- GPU VRAM box now renders completely visible in all sidebar configurations without cutoff
If you need memory awareness during real development work, this extension delivers it with polished presentation and production-minded behavior.
