Documented size, row-count, duration, and resolution ladders for measuring parser, renderer, converter, and upload performance without relying on private production data.
Each card starts with one representative test file. Choose a use case, search, or filter to find a specific profile; a card’s variant menu contains its related samples.
29 test families · 76 available files · Page 1 of 2
Profiles
An allocation profile in the same folded syntax as the CPU profiles, but weighted in bytes rather than samples. The format carries no unit, so a viewer that assumes samples renders 65 MB of allocation as 68 million sampl
Profiles
The .cpuprofile shape V8 emits: a node tree with call frames, a samples array of node IDs and a parallel timeDeltas array, plus the synthesized (idle), (program) and (garbage collector) nodes. Counting those synthetic fr
Profiles
The same workload after a change: JSON decoding costs four times as much and gains a new reflect frame, while cache lookups get cheaper. Paired with the baseline so a differential flamegraph can be scored against a known
Scene Graph
An 8x8 field of columns built from a single 12-triangle mesh referenced by 64 nodes with seeded random heights. Core-glTF instancing needs no extension: the file is tiny, and the interesting question is whether your rend
Compression
An unquantised sphere: 32-bit floats for both positions and normals, 24 bytes of attribute data per vertex. The uncompressed reference for the quantized and gzip twins in this group.
Buffers
Position, normal and UV packed into ONE bufferView with byteStride 32 and three accessors at offsets 0, 12 and 24: the GPU-friendly layout, and the one a naive parser mis-reads because it assumes each accessor owns its v
Lod
The same unit sphere at 16,128 triangles: level 0 of a four-step ladder that spans 202x from top to bottom. Because every level is generated analytically from the same surface rather than decimated, the ladder is an exac
Har
A PNG response whose body is carried as base64 with content.encoding set accordingly. content.size is the DECODED byte count, not the length of the base64 string, which is the field readers most often get wrong when comp
Har
A conditional request answered 304 with full beforeRequest and afterRequest cache state, next to a first-time fetch whose beforeRequest is null. The null is the documented way to say "not in the cache", and readers that
Har
A full session-cookie lifecycle: set at login, echoed on the next request, then expired at logout with Max-Age=0. Both the header and the parsed cookies array are present, and every value (including the form password fie
Junit XML
240 cases across six classes, three of them failing. Big enough to time a parser and to check that a report UI paginates or virtualises rather than rendering every row, but still small enough to read.
Large
A 50,000-row transactions dataset: an in-repo 'large' fixture for testing streaming CSV parsers, import performance, and pagination. Deterministic (fixed seed).
Profiles
Raw perf script output: a header line per sample followed by tab-indented call-chain frames with addresses, symbols, offsets and DSO paths, samples separated by blank lines. The input side of stackcollapse, including unr
Performance
The percentile table a performance report renders as a chart, with mean, p50, p95, p99 and max for each of the four scenarios. The same numbers appear inside the JSON summary in this group, so a chart built from either s
Geopackage
A small raster tile pyramid covering the invented territory, one flat colour per zoom level so a wrongly addressed tile is obvious on sight. The row axis follows the TMS convention, which is flipped relative to the XYZ s
Web Compression
The uncompressed CFF (Type 2) source for this container set. Every WOFF and WOFF2 file in the group is packed from exactly these bytes, so a compression comparison is measuring the container and nothing else. Original ty
Traces
A single-service trace 48 levels deep: a recursive GraphQL-style resolver where every span is the child of the one before it. A depth fixture for waterfall renderers, tree-layout code and any parser that recurses over pa
Metrics
A single metric family blown up to 2,000 series by two unbounded labels (customer_id and session_id), which is the most common way a metrics bill and a TSDB both fall over. A load fixture for scrape parsing and a worked
