server stringlengths 8 410 | package stringlengths 14 48 ⌀ | runtime stringclasses 2
values | launcher stringclasses 3
values | server_reported_version stringlengths 14 34 ⌀ | ready_ms_median float64 547 1.88k ⌀ | tools_list_ms_median float64 1 60.4 ⌀ | rss_mb_median float64 178 422 ⌀ | tool_count float64 1 26 ⌀ | iterations float64 3 5 ⌀ | ready_ms_all stringlengths 11 24 ⌀ | rss_mb_all stringlengths 17 29 ⌀ |
|---|---|---|---|---|---|---|---|---|---|---|---|
server-memory | @modelcontextprotocol/server-memory | node | npx -y | memory-server 0.6.3 | 667 | 5.7 | 187 | 9 | 5 | 667|660|696|674|655 | 187.1|187.1|186.7|186.6|187.0 |
server-filesystem | @modelcontextprotocol/server-filesystem | node | npx -y | secure-filesystem-server 0.2.0 | 692 | 6.7 | 188.1 | 14 | 5 | 687|692|711|681|706 | 188.1|187.5|190.4|188.1|187.1 |
sequential-thinking | @modelcontextprotocol/server-sequential-thinking | node | npx -y | sequential-thinking-server 0.2.0 | 666 | 2.9 | 186.3 | 1 | 5 | 667|665|658|669|666 | 186.0|187.0|186.5|186.3|186.1 |
playwright-mcp | @playwright/mcp | node | npx -y | Playwright 1.63.0-alpha-2026-08-05 | 618 | 9.7 | 227.2 | 24 | 5 | 618|641|617|614|622 | 227.7|227.2|227.0|226.6|227.6 |
desktop-commander | @wonderwhy-er/desktop-commander | node | npx -y | desktop-commander 0.2.47 | 1,705 | 60.4 | 274.9 | 26 | 5 | 1705|1720|1703|1733|1697 | 273.9|281.6|281.7|274.4|274.9 |
context7 | @upstash/context7-mcp | node | npx -y | Context7 4.0.2 | 815 | 2.4 | 213.9 | 2 | 5 | 815|824|823|807|813 | 213.9|214.7|218.1|213.8|213.1 |
fetch (python) | mcp-server-fetch | python | uvx | mcp-fetch 1.29.0 | 717 | 1.4 | 220.3 | 1 | 5 | 813|723|717|715|714 | 222.8|222.2|217.5|219.9|220.3 |
time (python) | mcp-server-time | python | uvx | mcp-time 1.29.0 | 619 | 1 | 180.7 | 2 | 5 | 720|619|622|619|614 | 179.3|180.7|181.2|180.5|181.3 |
qdrant (python 3.12 pin) | mcp-server-qdrant | python | uvx --python 3.12 | mcp-server-qdrant 1.29.0 | 1,881 | 1.1 | 421.9 | 2 | 3 | 1941|1881|1803 | 426.9|421.9|421.1 |
server-github (legacy npx) | @modelcontextprotocol/server-github | node | npx -y | github-mcp-server 0.6.2 | 547 | 7 | 177.9 | 26 | 3 | 548|542|547 | 177.4|177.9|178.4 |
git (python) | mcp-server-git | python | uvx | mcp-git 1.29.0 | 699 | 4.5 | 184.7 | 12 | 5 | 707|742|695|699|698 | 183.4|185.1|184.1|184.7|184.7 |
# controls: bare node.exe resident loop 52.1 MB rss; bare python 3.13 loop 15.2 MB rss | null | null | null | null | null | null | null | null | null | null | null |
# concurrent 5-server stack (memory+filesystem+fetch+git+github): 961.6 MB total rss, all ready in 803 ms; PowerShell WorkingSet64 cross-check: PSSUM=961.6
# 5-server stack components (MB): memory 189.8 | filesystem 187.1 | fetch 221.7 | git 184.5 | github 178.5
# parent-vs-tree control: npx parent alone reports 10... | null | null | null | null | null | null | null | null | null | null | null |
# method: fresh spawn per iteration, warm package cache (one discarded warmup spawn), JSON-RPC initialize + tools/list over stdio, RSS = full descendant process tree via psutil sampled 0.4s after tools/list; Windows 11, 2026-08-19; CC BY 4.0 TechFuelHQ | null | null | null | null | null | null | null | null | null | null | null |
MCP Server Resource Benchmark: RAM, Startup, Tool Counts
Measured resident memory, startup time and tool counts for 11 popular MCP servers, plus a concurrent five-server stack.
Results
- 178-422MB resident per server (median 188MB)
- 0.5-1.9 seconds warm startup
- 961.6MB for a concurrent five-server stack, cross-checked by two independent measurement paths (psutil and PowerShell
WorkingSet64) that agreed exactly - Runtime floors for context: 52MB bare Node, 15MB bare Python
The measurement trap
npx and uvx are launchers. The parent process holds almost nothing while a child holds the real footprint.
Measured directly, the npx parent alone reports 10.3MB while its full descendant tree holds 189.3MB — an 18x undercount.
Every RSS figure here is the descendant-tree sum, sampled 0.4s after tools/list returned, 5 iterations per server (3 for two late additions, marked in the CSV). Any MCP memory number that does not say it walked the process tree is probably wrong.
Source and license
Canonical page, full method and change log: https://techfuelhq.com/data/mcp-server-bench/
Licensed CC BY 4.0. Attribution: "TechFuelHQ" linking to the canonical page.
Corrections welcome. If a row is wrong it gets fixed against the primary source and the correction is logged.
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