[GR-25942] Workaround GR-25942 by using only 2 compiler threads on SVM CE for specs

Author: eregon

ci.jsonnet

@@ -146,6 +146,12 @@ local part_definitions = {
     },
 
     sqlite331: { packages+: { sqlite: ">=3.31" } },
+
+    limit_compiler_threads: { # GR-25942
+      environment+: {
+        TRUFFLERUBYOPT+: " --experimental-options --engine.CompilerThreads=2",
+      },
+    },
   },
 
   env: {
@@ -421,7 +427,7 @@ local part_definitions = {
         ["set-export", "GUEST_VM_CONFIG", "default"],
       ] + run_benchs + [
         ["set-export", "GUEST_VM_CONFIG", "no-rubygems"],
-        ["set-export", "TRUFFLERUBYOPT", "--disable-gems"],
+        ["set-export", "TRUFFLERUBYOPT", "$TRUFFLERUBYOPT --disable-gems"],
       ] + run_benchs,
     },
 
@@ -444,7 +450,7 @@ local part_definitions = {
 
     cext_chunky: {
       environment+: {
-        TRUFFLERUBYOPT: "--experimental-options --cexts-log-load",
+        TRUFFLERUBYOPT+: " --experimental-options --cexts-log-load",
         USE_CEXTS: "true",
       },
       setup+:
@@ -486,17 +492,17 @@ local composition_environment = utils.add_inclusion_tracking(part_definitions, "
       "ruby-test-gems-linux":        $.platform.linux  + $.jdk.v8  + $.env.jvm + gate + $.use.gem_test_pack + $.run.test_gems,
       "ruby-test-gems-darwin":       $.platform.darwin + $.jdk.v8  + $.env.jvm + gate + $.use.gem_test_pack + $.run.test_gems,
       "ruby-test-ecosystem-linux":   $.platform.linux  + $.jdk.v8  + $.env.jvm + gate + $.use.node + $.use.sqlite331 + $.use.gem_test_pack + $.run.test_ecosystem,
-      "ruby-test-standalone-linux":  $.platform.linux  + $.jdk.v8 + gate_no_build + $.run.test_make_standalone_distribution + { timelimit: "40:00" },
+      "ruby-test-standalone-linux":  $.platform.linux  + $.jdk.v8 + gate_no_build + $.run.test_make_standalone_distribution + $.use.limit_compiler_threads + { timelimit: "40:00" },
 
       "ruby-test-compiler-graal-core":          $.platform.linux + $.jdk.v8  + $.env.jvm_ce + gate + $.use.truffleruby + $.run.test_compiler,
       "ruby-test-compiler-graal-core-11":       $.platform.linux + $.jdk.v11 + $.env.jvm_ce + gate + $.use.truffleruby + $.run.test_compiler,
       "ruby-test-compiler-graal-enterprise":    $.platform.linux + $.jdk.v8 +  $.env.jvm_ee + gate + $.use.truffleruby + $.run.test_compiler,
       "ruby-test-compiler-graal-enterprise-11": $.platform.linux + $.jdk.v11 + $.env.jvm_ee + gate + $.use.truffleruby + $.run.test_compiler,
 
-      "ruby-test-svm-graal-core-linux":        $.platform.linux  + $.jdk.v8  + $.env.native_RemoveSaturatedTypeFlows + gate + native_tests,
-      "ruby-test-svm-graal-core-linux-11":     $.platform.linux  + $.jdk.v11 + $.env.native                          + gate + native_tests,
-      "ruby-test-svm-graal-core-darwin":       $.platform.darwin + $.jdk.v8  + $.env.native_RemoveSaturatedTypeFlows + gate + native_tests,
-      "ruby-test-svm-graal-core-darwin-11":    $.platform.darwin + $.jdk.v11 + $.env.native                          + gate + native_tests,
+      "ruby-test-svm-graal-core-linux":        $.platform.linux  + $.jdk.v8  + $.env.native_RemoveSaturatedTypeFlows + gate + native_tests + $.use.limit_compiler_threads,
+      "ruby-test-svm-graal-core-linux-11":     $.platform.linux  + $.jdk.v11 + $.env.native                          + gate + native_tests + $.use.limit_compiler_threads,
+      "ruby-test-svm-graal-core-darwin":       $.platform.darwin + $.jdk.v8  + $.env.native_RemoveSaturatedTypeFlows + gate + native_tests + $.use.limit_compiler_threads,
+      "ruby-test-svm-graal-core-darwin-11":    $.platform.darwin + $.jdk.v11 + $.env.native                          + gate + native_tests + $.use.limit_compiler_threads,
       "ruby-test-svm-graal-enterprise-linux":  $.platform.linux  + $.jdk.v8  + $.env.native_ee                       + gate + native_tests,
       "ruby-test-svm-graal-enterprise-darwin": $.platform.darwin + $.jdk.v8  + $.env.native_ee                       + gate + native_tests,
     },