test,doc: skip --max-old-space-size-percentage on 32-bit platforms

Asaf-Federman · web-flow · commit ad2c1bf62ee4 · 2025-10-09T16:23:51.000Z
PR-URL: #60144 Reviewed-By: Richard Lau <richard.lau@ibm.com> Reviewed-By: Luigi Pinca <luigipinca@gmail.com> Reviewed-By: Ulises Gascón <ulisesgascongonzalez@gmail.com> Reviewed-By: Colin Ihrig <cjihrig@gmail.com>
diff --git a/doc/api/cli.md b/doc/api/cli.md
@@ -1765,14 +1765,17 @@ changes:
 
 Specify the maximum size, in bytes, of HTTP headers. Defaults to 16 KiB.
 
-### `--max-old-space-size-percentage=PERCENTAGE`
+### `--max-old-space-size-percentage=percentage`
 
-Sets the max memory size of V8's old memory section as a percentage of available system memory.
+Sets the maximum memory size of V8's old memory section as a percentage of available system memory.
 This flag takes precedence over `--max-old-space-size` when both are specified.
 
-The `PERCENTAGE` parameter must be a number greater than 0 and up to 100. representing the percentage
+The `percentage` parameter must be a number greater than 0 and up to 100, representing the percentage
 of available system memory to allocate to the V8 heap.
 
+**Note:** This flag utilizes `--max-old-space-size`, which may be unreliable on 32-bit platforms due to
+integer overflow issues.
+
 ```bash
 # Using 50% of available system memory
 node --max-old-space-size-percentage=50 index.js
diff --git a/doc/node.1 b/doc/node.1
@@ -339,14 +339,18 @@ The file used to store localStorage data.
 Specify the maximum size of HTTP headers in bytes. Defaults to 16 KiB.
 .
 .It Fl -max-old-space-size-percentage Ns = Ns Ar percentage
-Sets the max memory size of V8's old memory section as a percentage of available system memory.
+Sets the maximum memory size of V8's old memory section as a percentage of available system memory.
 This flag takes precedence over
 .Fl -max-old-space-size
 when both are specified.
 The
 .Ar percentage
 parameter must be a number greater than 0 and up to 100, representing the percentage
 of available system memory to allocate to the V8 heap.
+.Pp
+Note: This flag utilizes
+.Fl -max-old-space-size ,
+which may be unreliable on 32-bit platforms due to integer overflow issues.
 .
 .It Fl -napi-modules
 This option is a no-op.
diff --git a/test/parallel/test-max-old-space-size-percentage.js b/test/parallel/test-max-old-space-size-percentage.js
@@ -2,7 +2,11 @@
 
 // This test validates the --max-old-space-size-percentage flag functionality
 
-require('../common');
+const common = require('../common');
+// This flag utilizes --max-old-space-size, which is unreliable on
+// 32-bit platforms due to integer overflow issues.
+common.skipIf32Bits();
+
 const assert = require('node:assert');
 const { spawnSync } = require('child_process');
 const os = require('os');
