modperf

Search the Steam Workshop for a DayZ mod, or paste a mod or collection URL (or a bare workshop id). modperf reads the mod's Enforce Script and reports what it actually does: every dispatch-surface override, chain-safety (super()) findings, timers, and a Footprint grade. Static analysis only — nothing is executed.

Browse analyzed mods → Compose a stack → Most contested methods → Load vs. subscribers →

How the 328 scripted mods score

Structural load: milliseconds of server main thread per second at 100 players, from each mod's hooks and timers.

Mods analyzed
548
Scripted, ranked
328
Asset-only, not ranked
220
Median scripted mod
0.004 ms/s
10
20
30
40
  • 24 mods
    0.0000022 to 0.0000046 ms/s · grade A
  • 7 mods
    0.0000046 to 0.00001 ms/s · grade A
  • 1 mod
    0.00001 to 0.000022 ms/s · grade A
  • 1 mod
    0.000022 to 0.000046 ms/s · grade A
  • 37 mods
    0.0001 to 0.00022 ms/s · grade A
  • 26 mods
    0.00022 to 0.00046 ms/s · grade A
  • 33 mods
    0.00046 to 0.001 ms/s · grade A
  • 23 mods
    0.001 to 0.0022 ms/s · grade A
  • 13 mods
    0.0022 to 0.0046 ms/s · grade A
  • 10 mods
    0.0046 to 0.01 ms/s · grade A
  • 5 mods
    0.01 to 0.022 ms/s · grade A
  • 18 mods
    0.022 to 0.046 ms/s · grade A
  • 17 mods
    0.046 to 0.1 ms/s · grade A
  • 40 mods
    0.1 to 0.22 ms/s · grade A
  • 26 mods
    0.22 to 0.46 ms/s · grade A
  • 28 mods
    0.46 to 1 ms/s · grade A
  • 8 mods
    1 to 2.2 ms/s · grade A to B
  • 10 mods
    2.2 to 4.6 ms/s · grade B
  • 1 mod
    4.6 to 10 ms/s · grade B to C
A316
B11
C1
D0
E0
ms/s, log scale: each labelled step is ten times the one before. Letter grade and mods holding it below the axis.

The letter changes at 2, 6, 20 and 60 ms/s, so it separates 12 mods from 316; the load behind it spreads them all. The heaviest tenth starts at 0.702 ms/s. Load counts how often hooks fire and how many timers stay alive, not what they do inside: the heaviest structure is not the laggiest mod. See where a mod ranks →

Lighter after an update

Mods that shed structural load in an update and have kept it off. Both versions are scored under the same rules; the gray track is the version before.

KarmaKrew Chernarus Balance
updated 2026-10-19 1.546 → 0.556 ms/s · −64% · 1 fewer error finding SF_Weapons
updated 2026-10-18 0.000 → 0.000 ms/s · −100% RaG_BaseItems
updated 2026-10-18 0.003 → 0.003 ms/s · −13% DieselGear
updated 2026-10-15 0.880 → 0.026 ms/s · −97%
Stall risks
Can it stall a frame?

File I/O on hot paths, timers created per event, and hooks that run per player per frame.

Compatibility
Can it break other mods?

Overrides that skip super(), ranked by how far the break reaches: a base class or saved data first, whole-class replacements grouped.

Structural footprint
How much does it add?

A letter grade, a rank among scripted mods and the share of a server frame its hooks and timers take.

Public Workshop items only. Collections expand to per-mod reports. Reports live at a stable URL per mod — link them anywhere. Published an update? Paste the URL again: the report is rebuilt from the new version and its history shows what changed. How the grade works.