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{
"_description" : "This file contains info about our performance test units, used by the perf dashboard (http://chromeperf.appspot.com).",
"%": {
"improvement_direction": "down",
"why": "Percent CPU usage. Used by cpu metric."
},
"bit/s": {
"improvement_direction": "down",
"why": "Bitrate."
},
"bytes/s": {
"improvement_direction": "down",
"why": "Bitrate."
},
"bytes": {
"improvement_direction": "down"
},
"chars/s": {
"improvement_direction": "up"
},
"Celsius": {
"improvement_direction": "down",
"why": "Colder machines are faster."
},
"commit_count": {
"improvement_direction": "up",
"why": "layer_tree_host_perftest"
},
"count": {
"improvement_direction": "down",
"why": "Processes"
},
"coverage%": {
"improvement_direction": "up",
"why": "Used in alloy-perf-test/cts%/passed."
},
"dB": {
"improvement_direction": "up",
"why": "Decibels peak signal-to-noise ratio. Used by WebRTC quality tests."
},
"files": {
"improvement_direction": "down",
"why": "Static initializers"
},
"fps": {
"improvement_direction": "up",
"why": "The faster the better. Used by scirra benchmark."
},
"frames": {
"improvement_direction": "down",
"why": "Dropped frames."
},
"frames-per-second": {
"improvement_direction": "up",
"why": "Synonym for fps."
},
"frame_count": {
"improvement_direction": "up",
"why": "layer_tree_host_perftest"
},
"frame_time": {
"improvement_direction": "down"
},
"garbage_collections": {
"improvement_direction": "down",
"why": "Number of GCs needed to collect an object. Less is better."
},
"Hz": {
"improvement_direction": "up",
"why": "Higher frequencies are faster."
},
"janks": {
"improvement_direction": "down",
"why": "Fewer janks is better."
},
"kb": {
"improvement_direction": "down",
"why": "Synonym for KB, used in memory and io metrics."
},
"available_kB": {
"improvement_direction": "up",
"why": "kB of memory available. More memory available is better."
},
"KB": {
"improvement_direction": "down",
"why": "KB of memory usage. Less memory usage is better. Used in endure."
},
"lines": {
"improvement_direction": "up",
"why": "Coverage. More test coverage is better."
},
"load": {
"improvement_direction": "down"
},
"MB": {
"improvement_direction": "down"
},
"mips": {
"improvement_direction": "up",
"why": "More instructions processed per time unit."
},
"mpixels_sec": {
"improvement_direction": "up",
"why": "More pixels processed per time unit."
},
"mtexel_sec": {
"improvement_direction": "up",
"why": "More texels processed per time unit."
},
"mtri_sec": {
"improvement_direction": "up",
"why": "More triangles processed per time unit."
},
"mvtx_sec": {
"improvement_direction": "up",
"why": "More vertices processed per time unit."
},
"ms": {
"improvement_direction": "down",
"why": "Used in many Telemetry measurements. Fewer ms of time means faster."
},
"ms/1000 elements": {
"improvement_direction": "down"
},
"milliseconds": {
"improvement_direction": "down",
"why": "Synonym for ms."
},
"milliseconds-per-frame": {
"improvement_direction": "down"
},
"minutes": {
"improvement_direction": "down",
"why": "Used for NaCl build time."
},
"mWh": {
"improvement_direction": "down",
"why": "Fewer milliwatt-hours means less energy consumed."
},
"objects (bigger is better)": {
"improvement_direction": "up",
"why": "Used in spaceport benchmark."
},
"ObjectsAt30FPS": {
"improvement_direction": "up"
},
"packets": {
"improvement_direction": "down",
"why": "Monitors how many packets we use to accomplish something."
},
"percent": {
"improvement_direction": "down",
"why": "Synonym for %, used in memory metric for percent fragmentation."
},
"points": {
"improvement_direction": "up",
"why": "Synonym for score, used in ChromeOS touchpad tests."
},
"ports": {
"improvement_direction": "down"
},
"reduction%": {
"improvement_direction": "up",
"why": "Used in draw_property measurement to indicate relative improvement."
},
"relocs": {
"improvement_direction": "down"
},
"runs/ms": {
"improvement_direction": "up",
"why": "Higher runs/ms implies faster execution."
},
"runs/s": {
"improvement_direction": "up",
"why": "Used in dromaeo. Higher runs/s implies faster execution."
},
"runs_per_s": {
"improvement_direction": "up",
"why": "Synonym for runs/s, used in dromaeo data sent by cros bots."
},
"runs_per_second": {
"improvement_direction": "up",
"why": "Synonym for runs/s."
},
"score": {
"improvement_direction": "up",
"why": "Used in a variety of benchmarks where a higher score is better."
},
"score_(bigger_is_better)": {
"improvement_direction": "up",
"why": "Synonym for score."
},
"score (bigger is better)": {
"improvement_direction": "up",
"why": "Synonym for score, used in jsgamebench and dom_perf."
},
"sec": {
"improvement_direction": "down"
},
"seconds": {
"improvement_direction": "down"
},
"tasks": {
"improvement_direction": "down"
},
"tokens/s": {
"improvement_direction": "up"
},
"us": {
"improvement_direction": "down"
},
"vsyncs": {
"improvement_direction": "down",
"why": "Used in smoothness benchmarks. Number of vsyncs to generate a frame, never < 1.0"
},
"idle%": {
"improvement_direction": "up",
"why": "Percentage of work done in idle time."
}
}
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