From 3283f9c1200a353ae2aadef2f0ea42a67437c160 Mon Sep 17 00:00:00 2001
From: Jake Bailey <5341706+jakebailey@users.noreply.github.com>
Date: Mon, 26 Oct 2026 10:04:12 -0700
Subject: [PATCH 1/3] Use workspace storage for compiler build scratch

Compiler builds exhaust the /tmp quota on the Ubuntu 26.04 hosted
image now selected by ubuntu-latest. Use workspace-backed scratch
storage so toolchain downloads and compilation can complete.
---
 build/benchmark.yml | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/build/benchmark.yml b/build/benchmark.yml
index 9027ecdf..74f19e21 100644
--- a/build/benchmark.yml
+++ b/build/benchmark.yml
@@ -323,6 +323,8 @@ jobs:
         displayName: Build new TypeScript
         condition: and(succeeded(), eq(variables['TSPERF_IS_COMPARISON'], 'true'))
         workingDirectory: $(TYPESCRIPT_DIR)
+        env:
+          TMPDIR: $(Pipeline.Workspace)
 
       - bash: |
           set -eo pipefail
@@ -354,6 +356,8 @@ jobs:
           settableVariables: none
         displayName: Build baseline TypeScript
         workingDirectory: $(TYPESCRIPT_DIR)
+        env:
+          TMPDIR: $(Pipeline.Workspace)
 
       - bash: |
           set -eo pipefail

From 2fad8cda58ed2d20e7b0831c06c9aa947360f123 Mon Sep 17 00:00:00 2001
From: Jake Bailey <5341706+jakebailey@users.noreply.github.com>
Date: Mon, 26 Oct 2026 10:06:17 -0700
Subject: [PATCH 2/3] Isolate compiler build temporary files in a subdirectory

Processes outside the compiler sandbox also inherit TMPDIR. Keep their
temporary files out of the workspace root by using a dedicated build
temporary directory.
---
 build/benchmark.yml | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/build/benchmark.yml b/build/benchmark.yml
index 74f19e21..13a3093d 100644
--- a/build/benchmark.yml
+++ b/build/benchmark.yml
@@ -315,6 +315,7 @@ jobs:
 
       - bash: |
           set -exo pipefail
+          mkdir -p "$TMPDIR"
           node $(BENCH_SCRIPTS)/buildTypeScript.js --outputDir $(ARTIFACTS_DIR)/new \
             --variablesFile $(Pipeline.Workspace)/new-variables.json
         target:
@@ -324,7 +325,7 @@ jobs:
         condition: and(succeeded(), eq(variables['TSPERF_IS_COMPARISON'], 'true'))
         workingDirectory: $(TYPESCRIPT_DIR)
         env:
-          TMPDIR: $(Pipeline.Workspace)
+          TMPDIR: $(Pipeline.Workspace)/compiler-build-tmp
 
       - bash: |
           set -eo pipefail
@@ -349,6 +350,7 @@ jobs:
 
       - bash: |
           set -exo pipefail
+          mkdir -p "$TMPDIR"
           node $(BENCH_SCRIPTS)/buildTypeScript.js --baseline --outputDir $(ARTIFACTS_DIR)/baseline \
             --variablesFile $(Pipeline.Workspace)/baseline-variables.json
         target:
@@ -357,7 +359,7 @@ jobs:
         displayName: Build baseline TypeScript
         workingDirectory: $(TYPESCRIPT_DIR)
         env:
-          TMPDIR: $(Pipeline.Workspace)
+          TMPDIR: $(Pipeline.Workspace)/compiler-build-tmp
 
       - bash: |
           set -eo pipefail

From 57af196b32d732133d7e031485daa79ef96742fa Mon Sep 17 00:00:00 2001
From: Jake Bailey <5341706+jakebailey@users.noreply.github.com>
Date: Mon, 26 Oct 2026 10:10:57 -0700
Subject: [PATCH 3/3] Use the agent temporary directory for compiler builds

Azure Pipelines provides disk-backed temporary storage with managed
cleanup. Use it instead of maintaining a separate workspace directory
to avoid the Ubuntu 26.04 /tmp quota.
---
 build/benchmark.yml | 6 ++----
 1 file changed, 2 insertions(+), 4 deletions(-)

diff --git a/build/benchmark.yml b/build/benchmark.yml
index 13a3093d..c0bb645b 100644
--- a/build/benchmark.yml
+++ b/build/benchmark.yml
@@ -315,7 +315,6 @@ jobs:
 
       - bash: |
           set -exo pipefail
-          mkdir -p "$TMPDIR"
           node $(BENCH_SCRIPTS)/buildTypeScript.js --outputDir $(ARTIFACTS_DIR)/new \
             --variablesFile $(Pipeline.Workspace)/new-variables.json
         target:
@@ -325,7 +324,7 @@ jobs:
         condition: and(succeeded(), eq(variables['TSPERF_IS_COMPARISON'], 'true'))
         workingDirectory: $(TYPESCRIPT_DIR)
         env:
-          TMPDIR: $(Pipeline.Workspace)/compiler-build-tmp
+          TMPDIR: $(Agent.TempDirectory)
 
       - bash: |
           set -eo pipefail
@@ -350,7 +349,6 @@ jobs:
 
       - bash: |
           set -exo pipefail
-          mkdir -p "$TMPDIR"
           node $(BENCH_SCRIPTS)/buildTypeScript.js --baseline --outputDir $(ARTIFACTS_DIR)/baseline \
             --variablesFile $(Pipeline.Workspace)/baseline-variables.json
         target:
@@ -359,7 +357,7 @@ jobs:
         displayName: Build baseline TypeScript
         workingDirectory: $(TYPESCRIPT_DIR)
         env:
-          TMPDIR: $(Pipeline.Workspace)/compiler-build-tmp
+          TMPDIR: $(Agent.TempDirectory)
 
       - bash: |
           set -eo pipefail