Add a default PGO profile for the compiler by jakebailey · Pull Request #64986 · microsoft/TypeScript

Jake Bailey (jakebailey) · 2026-10-27T21:46:56Z

Let's give this a try again.

Generated using the repos from the blog post

Optimize the compiler for real-world checking and emit workloads by making a representative CPU profile available to Go's default PGO build. The training workload is one emit-enabled compilation each of VS Code, Sentry, Bluesky, t3code server, t3code web, and Material UI docs from jakebailey/TypeScript-blog-benchmarks, using the default four checkers. Profiles were collected at 4163ca1 with Go 1.27.3 on linux/amd64. Following golang/go's src/cmd/compile/profile.sh, merge the six CPU profiles with go tool pprof -proto, retaining their CPU-sample weights.

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Jake Bailey (jakebailey) · 2026-10-27T21:47:25Z

TypeScript Bot (@typescript-bot) perf test this faster

typescript-automation · 2026-10-27T21:47:30Z

Starting jobs; this comment will be updated as builds start and complete.

Command	Status	Results
`perf test this faster`	✅ Started	👀 Results

typescript-automation · 2026-10-27T22:29:32Z

Jake Bailey (@jakebailey)
The results of the perf run you requested are in!

Here they are:

Provisional hosted-runner results: these VMs are not the dedicated benchmark machines. Results may be noisier and are not comparable to the historical series. For comparisons, both revisions of each scenario ran on the same VM.

tsc

Comparison Report - baseline..pr

_Metric	_baseline	_pr	_Delta	_Best	_Worst	_p-value
_{Compiler-Unions - native}
_Errors	₄₁	₄₁	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_88,466	_88,466	_~	_~	_~	_{p=1.000 n=12}
_Types	_79,607	_79,607	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{104,188k (± 0.02%)}	_{104,126k (± 0.03%)}	_{-63k (- 0.06%)}	_104,041k	_104,214k	_{p=0.004 n=12}
_{Memory Allocs}	_{2,200,666 (± 0.00%)}	_{2,029,582 (± 0.00%)}	_{🟩-171,084 (- 7.77%)}	_2,029,351	_2,029,830	_{p=0.000 n=12}
_{Config Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.032s (± 3.56%)}	_{0.032s (± 4.16%)}	_~	_0.028s	_0.034s	_{p=0.677 n=12}
_{Bind Time}	_{0.012s (± 4.64%)}	_{0.012s (± 9.27%)}	_~	_0.010s	_0.016s	_{p=0.878 n=12}
_{Check Time}	_{0.340s (± 0.70%)}	_{0.341s (± 1.37%)}	_~	_0.331s	_0.352s	_{p=0.830 n=12}
_{Emit Time}	_{0.211s (± 1.62%)}	_{0.208s (± 2.50%)}	_~	_0.194s	_0.220s	_{p=0.433 n=12}
_{Total Time}	_{0.600s (± 0.70%)}	_{0.598s (± 1.63%)}	_~	_0.581s	_0.620s	_{p=0.640 n=12}
_{angular-1 - native}
_Errors	₃	₃	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_{586,513 (± 0.02%)}	_{586,570 (± 0.01%)}	_~	_586,389	_586,750	_{p=0.298 n=12}
_Types	_{241,693 (± 0.00%)}	_{241,691 (± 0.00%)}	_~	_241,690	_241,693	_{p=0.055 n=12}
_{Memory Used}	_{517,800k (± 0.02%)}	_{517,908k (± 0.02%)}	_~	_517,589k	_518,278k	_{p=0.219 n=12}
_{Memory Allocs}	_{13,117,484 (± 0.07%)}	_{12,267,305 (± 0.07%)}	_{🟩-850,179 (- 6.48%)}	_12,258,369	_12,307,842	_{p=0.000 n=12}
_{Config Time}	_{0.017s (± 1.07%)}	_0.017s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.188s (± 2.62%)}	_{0.183s (± 3.24%)}	_~	_0.172s	_0.209s	_{p=0.053 n=12}
_{Bind Time}	_{0.054s (±11.73%)}	_{0.052s (± 7.39%)}	_~	_0.050s	_0.072s	_{p=0.255 n=12}
_{Check Time}	_0s	_0s	_~	_~	_~	_{p=1.000 n=12}
_{Emit Time}	_{1.130s (± 1.27%)}	_{1.130s (± 1.56%)}	_~	_1.081s	_1.177s	_{p=0.989 n=12}
_{Total Time}	_{1.403s (± 0.68%)}	_{1.394s (± 1.34%)}	_~	_1.338s	_1.447s	_{p=0.385 n=12}
_{arktype - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_685,943	_685,943	_~	_~	_~	_{p=1.000 n=12}
_Types	_939,490	_939,490	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{497,263k (± 0.01%)}	_{497,236k (± 0.02%)}	_~	_497,056k	_497,411k	_{p=0.713 n=12}
_{Memory Allocs}	_{12,803,992 (± 0.02%)}	_{12,735,560 (± 0.01%)}	_{-68,432 (- 0.53%)}	_12,732,810	_12,740,481	_{p=0.000 n=12}
_{Config Time}	_0.002s	_0.002s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.058s (± 3.26%)}	_{0.057s (± 2.35%)}	_~	_0.054s	_0.062s	_{p=0.352 n=12}
_{Bind Time}	_{0.017s (±11.48%)}	_{0.019s (± 9.88%)}	_{🔻+0.002s (+12.20%)}	_0.015s	_0.025s	_{p=0.046 n=12}
_{Check Time}	_{1.371s (± 0.68%)}	_{1.396s (± 0.52%)}	_{+0.024s (+ 1.76%)}	_1.378s	_1.412s	_{p=0.000 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{1.488s (± 0.70%)}	_{1.516s (± 0.70%)}	_{+0.028s (+ 1.90%)}	_1.493s	_1.541s	_{p=0.000 n=12}
_{mui-docs - native}
_Errors	_11,405	_11,405	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_3,784,027	_3,784,027	_~	_~	_~	_{p=1.000 n=12}
_Types	_1,355,982	_1,355,982	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{1,831,344k (± 0.10%)}	_{1,830,307k (± 0.09%)}	_~	_1,826,188k	_1,835,497k	_{p=0.378 n=12}
_{Memory Allocs}	_{26,706,258 (± 0.07%)}	_{25,560,195 (± 0.09%)}	_{🟩-1,146,063 (- 4.29%)}	_25,513,915	_25,605,192	_{p=0.000 n=12}
_{Config Time}	_{0.014s (± 2.00%)}	_{0.014s (± 2.00%)}	_~	_0.014s	_0.015s	_{p=1.000 n=12}
_{Parse Time}	_{0.488s (± 2.88%)}	_{0.496s (± 3.03%)}	_~	_0.449s	_0.541s	_{p=0.599 n=12}
_{Bind Time}	_{0.001s (±23.23%)}	_{0.001s (±16.76%)}	_~	_0.001s	_0.002s	_{p=0.317 n=12}
_{Check Time}	_{4.507s (± 0.39%)}	_{4.354s (± 0.47%)}	_{🟩-0.152s (- 3.38%)}	_4.304s	_4.440s	_{p=0.000 n=12}
_{Emit Time}	_{0.419s (± 5.24%)}	_{0.389s (± 7.90%)}	_{🟩-0.030s (- 7.17%)}	_0.329s	_0.467s	_{p=0.046 n=12}
_{Total Time}	_{6.218s (± 0.59%)}	_{6.094s (± 0.78%)}	_{-0.123s (- 1.98%)}	_5.985s	_6.202s	_{p=0.000 n=12}
_{sentry - native}
_Errors	₂	₂	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_4,793,249	_4,793,249	_~	_~	_~	_{p=1.000 n=12}
_Types	_2,607,051	_2,607,051	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{2,879,163k (± 0.06%)}	_{2,878,144k (± 0.03%)}	_~	_2,876,566k	_2,880,230k	_{p=0.767 n=12}
_{Memory Allocs}	_{75,984,467 (± 0.08%)}	_{75,168,151 (± 0.19%)}	_{-816,317 (- 1.07%)}	_74,876,845	_75,648,528	_{p=0.000 n=12}
_{Config Time}	_{0.044s (± 0.70%)}	_{0.045s (± 0.81%)}	_~	_0.044s	_0.046s	_{p=0.073 n=12}
_{Parse Time}	_{0.704s (± 3.69%)}	_{0.694s (± 3.13%)}	_~	_0.642s	_0.745s	_{p=0.744 n=12}
_{Bind Time}	_{0.185s (±14.05%)}	_{0.214s (±15.03%)}	_{🔻+0.029s (+15.71%)}	_0.172s	_0.298s	_{p=0.003 n=12}
_{Check Time}	_{9.119s (± 0.38%)}	_{9.139s (± 0.41%)}	_~	_9.074s	_9.277s	_{p=0.478 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{10.107s (± 0.48%)}	_{10.147s (± 0.40%)}	_~	_10.067s	_10.292s	_{p=0.285 n=12}
_{social-app - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_1,883,075	_1,883,075	_~	_~	_~	_{p=1.000 n=12}
_Types	_1,158,171	_1,158,171	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{971,652k (± 0.02%)}	_{971,738k (± 0.03%)}	_~	_971,107k	_972,461k	_{p=0.932 n=12}
_{Memory Allocs}	_{13,713,815 (± 0.17%)}	_{13,573,054 (± 0.19%)}	_{-140,761 (- 1.03%)}	_13,523,148	_13,667,521	_{p=0.000 n=12}
_{Config Time}	_{0.015s (± 1.93%)}	_{0.015s (± 1.65%)}	_~	_0.014s	_0.015s	_{p=1.000 n=12}
_{Parse Time}	_{0.246s (± 3.56%)}	_{0.242s (± 2.88%)}	_~	_0.227s	_0.269s	_{p=0.599 n=12}
_{Bind Time}	_{0.052s (±13.19%)}	_{0.054s (± 9.65%)}	_{🔻+0.002s (+ 4.65%)}	_0.048s	_0.080s	_{p=0.043 n=12}
_{Check Time}	_{2.119s (± 0.44%)}	_{2.106s (± 0.66%)}	_~	_2.071s	_2.158s	_{p=0.097 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{2.452s (± 0.42%)}	_{2.435s (± 0.62%)}	_~	_2.397s	_2.478s	_{p=0.086 n=12}
_{strada-build-src - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_1,184,976	_1,184,976	_~	_~	_~	_{p=1.000 n=12}
_Types	_438,967	_438,967	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{1,168,665k (± 0.38%)}	_{1,166,772k (± 0.29%)}	_~	_1,159,022k	_1,175,972k	_{p=0.410 n=12}
_{Memory Allocs}	_{77,390,458 (± 0.14%)}	_{76,201,933 (± 0.15%)}	_{-1,188,526 (- 1.54%)}	_75,969,201	_76,601,679	_{p=0.000 n=12}
_{Config Time}	_{0.004s (±17.94%)}	_{0.004s (±16.90%)}	_~	_0.002s	_0.006s	_{p=0.733 n=12}
_{Parse Time}	_{0.188s (± 2.75%)}	_{0.181s (± 1.92%)}	_{🟩-0.007s (- 3.90%)}	_0.172s	_0.188s	_{p=0.043 n=12}
_{Bind Time}	_0.000s	_{0.000s (±217.90%)}	_~	_0.000s	_0.002s	_{p=1.000 n=12}
_{Check Time}	_{1.183s (± 0.92%)}	_{1.180s (± 0.47%)}	_~	_1.162s	_1.191s	_{p=1.000 n=12}
_{Emit Time}	_{0.217s (± 1.58%)}	_{0.210s (± 2.03%)}	_{🟩-0.007s (- 3.38%)}	_0.197s	_0.223s	_{p=0.010 n=12}
_{Total Time}	_{14.075s (± 0.97%)}	_{13.828s (± 0.55%)}	_{-0.247s (- 1.76%)}	_13.605s	_14.000s	_{p=0.004 n=12}
_{strada-compiler - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_263,513	_263,513	_~	_~	_~	_{p=1.000 n=12}
_Types	_196,118	_196,118	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{224,587k (± 0.03%)}	_{224,573k (± 0.02%)}	_~	_224,468k	_224,701k	_{p=0.977 n=12}
_{Memory Allocs}	_{4,303,416 (± 0.01%)}	_{4,239,811 (± 0.01%)}	_{-63,605 (- 1.48%)}	_4,238,838	_4,240,521	_{p=0.000 n=12}
_{Config Time}	_{0.001s (±19.81%)}	_0.001s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.071s (± 3.95%)}	_{0.068s (± 4.08%)}	_~	_0.061s	_0.075s	_{p=0.153 n=12}
_{Bind Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Check Time}	_{0.595s (± 0.69%)}	_{0.590s (± 0.62%)}	_~	_0.582s	_0.598s	_{p=0.173 n=12}
_{Emit Time}	_{0.092s (± 4.13%)}	_{0.092s (± 2.20%)}	_~	_0.087s	_0.097s	_{p=0.765 n=12}
_{Total Time}	_{0.793s (± 1.03%)}	_{0.786s (± 0.73%)}	_~	_0.773s	_0.804s	_{p=0.247 n=12}
_{t3code-server - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_4,350,705	_4,350,705	_~	_~	_~	_{p=1.000 n=12}
_Types	_3,040,691	_3,040,691	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{2,432,850k (± 0.02%)}	_{2,433,078k (± 0.03%)}	_~	_2,431,597k	_2,434,940k	_{p=0.630 n=12}
_{Memory Allocs}	_{37,892,311 (± 0.04%)}	_{37,513,057 (± 0.11%)}	_{-379,254 (- 1.00%)}	_37,443,245	_37,663,958	_{p=0.000 n=12}
_{Config Time}	_0.005s	_0.005s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.361s (± 2.77%)}	_{0.361s (± 1.87%)}	_~	_0.348s	_0.382s	_{p=0.660 n=12}
_{Bind Time}	_{0.118s (±13.06%)}	_{0.108s (± 7.45%)}	_~	_0.099s	_0.147s	_{p=0.416 n=12}
_{Check Time}	_{10.979s (± 0.89%)}	_{10.758s (± 0.45%)}	_{-0.222s (- 2.02%)}	_10.654s	_10.918s	_{p=0.000 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{11.477s (± 0.86%)}	_{11.245s (± 0.43%)}	_{-0.231s (- 2.02%)}	_11.163s	_11.404s	_{p=0.000 n=12}
_{ts-pre-modules - native}
_Errors	₈₇	₈₇	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_231,617	_231,617	_~	_~	_~	_{p=1.000 n=12}
_Types	_181,196	_181,196	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{193,541k (± 0.02%)}	_{193,504k (± 0.03%)}	_~	_193,369k	_193,630k	_{p=0.198 n=12}
_{Memory Allocs}	_{1,372,719 (± 0.02%)}	_{1,317,818 (± 0.02%)}	_{🟩-54,901 (- 4.00%)}	_1,317,068	_1,318,469	_{p=0.000 n=12}
_{Config Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.061s (± 3.96%)}	_{0.059s (± 4.35%)}	_~	_0.053s	_0.066s	_{p=0.268 n=12}
_{Bind Time}	_{0.026s (± 5.17%)}	_{0.027s (± 7.10%)}	_~	_0.022s	_0.032s	_{p=0.554 n=12}
_{Check Time}	_{0.459s (± 0.80%)}	_{0.451s (± 0.83%)}	_{-0.007s (- 1.60%)}	_0.442s	_0.460s	_{p=0.009 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{0.556s (± 0.56%)}	_{0.546s (± 0.79%)}	_{-0.010s (- 1.81%)}	_0.535s	_0.554s	_{p=0.001 n=12}
_{vscode - native}
_Errors	₁₀	₁₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_7,304,211	_7,304,211	_~	_~	_~	_{p=1.000 n=12}
_Types	_4,304,434	_4,304,434	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{5,086,949k (± 0.02%)}	_{5,086,496k (± 0.01%)}	_~	_5,085,076k	_5,088,316k	_{p=0.478 n=12}
_{Memory Allocs}	_{64,311,898 (± 0.01%)}	_{56,094,174 (± 0.03%)}	_{🟩-8,217,725 (-12.78%)}	_56,062,698	_56,134,425	_{p=0.000 n=12}
_{Config Time}	_{0.070s (± 0.75%)}	_{0.071s (± 1.41%)}	_~	_0.069s	_0.075s	_{p=0.181 n=12}
_{Parse Time}	_{1.352s (± 2.00%)}	_{1.322s (± 2.19%)}	_{-0.030s (- 2.22%)}	_1.251s	_1.404s	_{p=0.050 n=12}
_{Bind Time}	_{0.417s (±10.47%)}	_{0.406s (± 3.16%)}	_~	_0.378s	_0.448s	_{p=0.541 n=12}
_{Check Time}	_{10.724s (± 0.67%)}	_{10.843s (± 0.68%)}	_{+0.118s (+ 1.10%)}	_10.661s	_11.035s	_{p=0.025 n=12}
_{Emit Time}	_{3.868s (± 4.95%)}	_{3.442s (± 4.00%)}	_{🟩-0.426s (-11.01%)}	_3.304s	_4.114s	_{p=0.000 n=12}
_{Total Time}	_{16.504s (± 1.09%)}	_{16.156s (± 1.05%)}	_{-0.349s (- 2.11%)}	_15.926s	_16.934s	_{p=0.001 n=12}
_{webpack - native}
_Errors	₆₁₉	₆₁₉	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_918,308	_918,308	_~	_~	_~	_{p=1.000 n=12}
_Types	_638,248	_638,248	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{691,232k (± 0.02%)}	_{691,082k (± 0.02%)}	_~	_690,813k	_691,488k	_{p=0.178 n=12}
_{Memory Allocs}	_{6,612,636 (± 0.01%)}	_{6,500,597 (± 0.05%)}	_{-112,039 (- 1.69%)}	_6,496,104	_6,514,896	_{p=0.000 n=12}
_{Config Time}	_{0.007s (± 4.22%)}	_{0.008s (± 4.38%)}	_~	_0.007s	_0.008s	_{p=0.680 n=12}
_{Parse Time}	_{0.207s (± 5.61%)}	_{0.208s (± 4.22%)}	_~	_0.172s	_0.227s	_{p=0.787 n=12}
_{Bind Time}	_{0.063s (±11.60%)}	_{0.061s (±12.37%)}	_~	_0.053s	_0.090s	_{p=0.466 n=12}
_{Check Time}	_{1.731s (± 0.29%)}	_{1.681s (± 0.42%)}	_{-0.050s (- 2.87%)}	_1.662s	_1.707s	_{p=0.000 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{2.043s (± 0.52%)}	_{1.993s (± 0.91%)}	_{-0.050s (- 2.44%)}	_1.942s	_2.049s	_{p=0.000 n=12}
_{xstate-main - native}
_Errors	₀	₀	_~	_~	_~	_{p=1.000 n=12}
_Symbols	_640,494	_640,494	_~	_~	_~	_{p=1.000 n=12}
_Types	_387,992	_387,992	_~	_~	_~	_{p=1.000 n=12}
_{Memory Used}	_{350,846k (± 0.03%)}	_{350,779k (± 0.04%)}	_~	_350,498k	_351,187k	_{p=0.319 n=12}
_{Memory Allocs}	_{4,067,693 (± 0.05%)}	_{4,009,858 (± 0.03%)}	_{-57,835 (- 1.42%)}	_4,007,247	_4,015,155	_{p=0.000 n=12}
_{Config Time}	_0.002s	_0.002s	_~	_~	_~	_{p=1.000 n=12}
_{Parse Time}	_{0.089s (± 2.66%)}	_{0.087s (± 2.36%)}	_~	_0.083s	_0.095s	_{p=0.243 n=12}
_{Bind Time}	_{0.024s (± 8.00%)}	_{0.025s (± 9.10%)}	_~	_0.022s	_0.033s	_{p=0.155 n=12}
_{Check Time}	_{0.607s (± 0.73%)}	_{0.629s (± 0.75%)}	_{+0.022s (+ 3.65%)}	_0.615s	_0.642s	_{p=0.000 n=12}
_{Emit Time}	_0.000s	_0.000s	_~	_~	_~	_{p=1.000 n=12}
_{Total Time}	_{0.727s (± 0.76%)}	_{0.749s (± 0.66%)}	_{+0.022s (+ 3.04%)}	_0.732s	_0.761s	_{p=0.000 n=12}

System info unknown

Hosts

native

Scenarios

Compiler-Unions - native
angular-1 - native
arktype - native
mui-docs - native
sentry - native
social-app - native
strada-build-src - native
strada-compiler - native
t3code-server - native
ts-pre-modules - native
vscode - native
webpack - native
xstate-main - native

_Benchmark	_Name	_Iterations
_Current	_pr	₁₂
_Baseline	_baseline	₁₂

Developer Information:

Download Benchmarks

The initial profile mostly represents large TypeScript applications. Broaden it to include checker-heavy library code, declaration emit, JavaScript checking, and project-reference builds. Add one emit-enabled CPU profile each from ArkType, Webpack, and the TypeScript strada source build, using the same non-PGO seed compiler. Retain the original six profiles and merge all nine with pprof -proto, without reweighting their CPU samples. XState is excluded from training and reserved as an independent evaluation workload. Additional input revisions: ArkType: c34bf69b3371f63ae383ac533e63ad9311452a8b Webpack: 573ed5e52662f6c82ad0b6025ea13ccc2e6ba3a9 TypeScript strada: b465fdb ArkType emits JavaScript and declarations; Webpack checks and emits JavaScript with its existing diagnostics; the strada build uses -b src --force and emits declarations for the project-reference graph.

Jake Bailey (jakebailey) · 2026-10-28T00:04:03Z

TypeScript Bot (@typescript-bot) perf test this faster

typescript-automation · 2026-10-28T00:04:09Z

Starting jobs; this comment will be updated as builds start and complete.

Command	Status	Results
`perf test this faster`	✅ Started	❌ Results

typescript-automation · 2026-10-28T00:39:37Z

Jake Bailey (@jakebailey), the perf run you requested failed. You can check the log here.

Coverage builds with PGO exhaust the default temporary filesystem quota on the Linux ARM64 runner. Use the runner's temporary storage so tests and benchmarks can retain PGO without running out of temporary space.

Copilot AI balanced review requested due to automatic review settings October 27, 2026 21:46

github-project-automation Bot added this to PR Backlog Oct 27, 2026

typescript-automation Bot assigned Jake Bailey (jakebailey) Oct 27, 2026

github-project-automation Bot moved this to Not started in PR Backlog Oct 27, 2026

typescript-automation Bot added Author: Team For Uncommitted Bug PR for untriaged, rejected, closed or missing bug labels Oct 27, 2026

Copilot AI reviewed Oct 27, 2026

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Use runner temporary storage for Go test builds

4187e22

Coverage builds with PGO exhaust the default temporary filesystem quota on the Linux ARM64 runner. Use the runner's temporary storage so tests and benchmarks can retain PGO without running out of temporary space.

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Add a default PGO profile for the compiler - #64986

Add a default PGO profile for the compiler#64986
Jake Bailey (jakebailey) wants to merge 3 commits into
microsoft:mainfrom
jakebailey:pgo

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