From 4e5ba53811c0e3f91c306a2396b8e34fff3386e4 Mon Sep 17 00:00:00 2001
From: Andrey Epifancev <andrey.epifancev@ssi-solutions.ru>
Date: Thu, 29 Oct 2026 00:32:09 +0400
Subject: [PATCH] =?UTF-8?q?perf:=20svod2-memory=20=E2=80=94=20final=20?=
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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
---
 perf/e2e/scenarios/svod2-memory.spec.ts | 24 +++++++++++++++++++++---
 1 file changed, 21 insertions(+), 3 deletions(-)

diff --git a/perf/e2e/scenarios/svod2-memory.spec.ts b/perf/e2e/scenarios/svod2-memory.spec.ts
index f6476f0..d556f6a 100644
--- a/perf/e2e/scenarios/svod2-memory.spec.ts
+++ b/perf/e2e/scenarios/svod2-memory.spec.ts
@@ -12,7 +12,7 @@ import { loginAs, WEB } from '../lib/auth';
 import { throttle, heapUsed, domCounters } from '../lib/cdp';
 import { append } from '../lib/results';
 import { scrollThrough } from '../lib/scroll';
-import { SVOD2_DATA_ROW_SELECTOR, memoryPoints } from '../lib/svod2';
+import { SVOD2_DATA_ROW_SELECTOR, SVOD2_PLACEHOLDER_SELECTOR, memoryPoints } from '../lib/svod2';
 
 const CONTAINER = '.MuiTableContainer-root';
 const MIN_ROWS = 20;
@@ -30,6 +30,24 @@ async function waitRows(page: Page, what: string): Promise<number> {
   }
 }
 
+/** Ждём окончания загрузки: число строк и число заглушек не меняются 3 опроса подряд (интервал 300 мс). */
+async function settle(page: Page): Promise<number> {
+  let prev = '';
+  let same = 0;
+  const t0 = Date.now();
+  for (;;) {
+    const cur = await page.evaluate(
+      ([sel, rs, ph]) => `${document.querySelectorAll(`${sel} ${rs}`).length}/${document.querySelectorAll(`${sel} ${ph}`).length}`,
+      [CONTAINER, SVOD2_DATA_ROW_SELECTOR, SVOD2_PLACEHOLDER_SELECTOR],
+    );
+    same = cur === prev ? same + 1 : 0;
+    prev = cur;
+    if (same >= 3) return Number(cur.split('/')[0]);
+    if (Date.now() - t0 > LOAD_TIMEOUT) throw new Error(`settle: строки не стабилизировались за ${LOAD_TIMEOUT} мс (${cur})`);
+    await page.waitForTimeout(300);
+  }
+}
+
 /** «Все ССП/РФ» + «Загрузить» (Svod2Page.jsx), как в scroll.spec.ts. */
 async function loadAll(page: Page): Promise<void> {
   await page.getByLabel('ССП/РФ').click();
@@ -78,11 +96,11 @@ for (let repeat = 0; repeat < REPEATS; repeat++) {
           if (!r.complete) throw new Error(`rf_scrolled: скролл не дошёл до конца (${r.reason ?? 'incomplete'})`);
           rows = await waitRows(page, point);
         } else {
+          // выбор и данные хранятся по вкладкам (SvodContext, useSvod2Pages): повторный loadAll снял бы «Все ССП/РФ»
           await page.getByRole('tab').nth(0).click();
-          await loadAll(page);
           rows = await waitRows(page, point);
         }
-        await page.waitForTimeout(500);
+        rows = await settle(page);
         await sample(point, rows);
       }
     } finally {