diff --git a/src/shared/pid-alive.test.ts b/src/shared/pid-alive.test.ts
index 88066f1a794..70eaaadc5a5 100644
--- a/src/shared/pid-alive.test.ts
+++ b/src/shared/pid-alive.test.ts
@@ -77,17 +77,27 @@ describe("isPidAlive", () => {
 });
 
 describe("getProcessStartTime", () => {
-  it("returns a number on Linux for the current process", async () => {
-    // Simulate a realistic /proc/<pid>/stat line
-    const fakeStat = `${process.pid} (node) S 1 ${process.pid} ${process.pid} 0 -1 4194304 12345 0 0 0 100 50 0 0 20 0 8 0 98765 123456789 5000 18446744073709551615 0 0 0 0 0 0 0 0 0 0 0 0 17 0 0 0 0 0 0`;
+  it("parses linux /proc stat start times and rejects malformed variants", async () => {
+    const fakeStatPrefix = "42 (node) S 1 42 42 0 -1 4194304 12345 0 0 0 100 50 0 0 20 0 8 0 ";
+    const fakeStatSuffix =
+      " 123456789 5000 18446744073709551615 0 0 0 0 0 0 0 0 0 0 0 0 17 0 0 0 0 0 0";
     mockProcReads({
-      [`/proc/${process.pid}/stat`]: fakeStat,
+      [`/proc/${process.pid}/stat`]: `${process.pid} (node) S 1 ${process.pid} ${process.pid} 0 -1 4194304 12345 0 0 0 100 50 0 0 20 0 8 0 98765 123456789 5000 18446744073709551615 0 0 0 0 0 0 0 0 0 0 0 0 17 0 0 0 0 0 0`,
+      "/proc/42/stat": `${fakeStatPrefix}55555${fakeStatSuffix}`,
+      "/proc/43/stat": "43 node S malformed",
+      "/proc/44/stat": `44 (My App (v2)) S 1 44 44 0 -1 4194304 0 0 0 0 0 0 0 0 20 0 1 0 66666 0 0 0 0 0 0 0 0 0 0 0 0 0 17 0 0 0 0 0 0`,
+      "/proc/45/stat": `${fakeStatPrefix}-1${fakeStatSuffix}`,
+      "/proc/46/stat": `${fakeStatPrefix}1.5${fakeStatSuffix}`,
     });
 
     await withLinuxProcessPlatform(async () => {
       const { getProcessStartTime: fresh } = await import("./pid-alive.js");
-      const starttime = fresh(process.pid);
-      expect(starttime).toBe(98765);
+      expect(fresh(process.pid)).toBe(98765);
+      expect(fresh(42)).toBe(55555);
+      expect(fresh(43)).toBeNull();
+      expect(fresh(44)).toBe(66666);
+      expect(fresh(45)).toBeNull();
+      expect(fresh(46)).toBeNull();
     });
   });
 
@@ -107,41 +117,4 @@ describe("getProcessStartTime", () => {
     expect(getProcessStartTime(Number.NaN)).toBeNull();
     expect(getProcessStartTime(Number.POSITIVE_INFINITY)).toBeNull();
   });
-
-  it("returns null for malformed /proc stat content", async () => {
-    mockProcReads({
-      "/proc/42/stat": "42 node S malformed",
-    });
-    await withLinuxProcessPlatform(async () => {
-      const { getProcessStartTime: fresh } = await import("./pid-alive.js");
-      expect(fresh(42)).toBeNull();
-    });
-  });
-
-  it("handles comm fields containing spaces and parentheses", async () => {
-    // comm field with spaces and nested parens: "(My App (v2))"
-    const fakeStat = `42 (My App (v2)) S 1 42 42 0 -1 4194304 0 0 0 0 0 0 0 0 20 0 1 0 55555 0 0 0 0 0 0 0 0 0 0 0 0 0 17 0 0 0 0 0 0`;
-    mockProcReads({
-      "/proc/42/stat": fakeStat,
-    });
-    await withLinuxProcessPlatform(async () => {
-      const { getProcessStartTime: fresh } = await import("./pid-alive.js");
-      expect(fresh(42)).toBe(55555);
-    });
-  });
-
-  it("returns null for negative or non-integer start times", async () => {
-    const fakeStatPrefix = "42 (node) S 1 42 42 0 -1 4194304 12345 0 0 0 100 50 0 0 20 0 8 0 ";
-    const fakeStatSuffix =
-      " 123456789 5000 18446744073709551615 0 0 0 0 0 0 0 0 0 0 0 0 17 0 0 0 0 0 0";
-    mockProcReads({
-      "/proc/42/stat": `${fakeStatPrefix}-1${fakeStatSuffix}`,
-      "/proc/43/stat": `${fakeStatPrefix}1.5${fakeStatSuffix}`,
-    });
-    await withLinuxProcessPlatform(async () => {
-      const { getProcessStartTime: fresh } = await import("./pid-alive.js");
-      expect(fresh(42)).toBeNull();
-      expect(fresh(43)).toBeNull();
-    });
-  });
 });