fix: prevent page unresponsive crashes from WebGL GPU stalls during session switch

Reduce terminal chunk size from 128KB to 32KB and use double-RAF between chunks to give the WebGL renderer time to flush GPU operations. Also switch cached buffer restore from direct terminal.write() to chunked writes — the synchronous 256KB write was blocking the main thread for 5+ seconds via synchronous ReadPixels calls. Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
2026-10-07 07:59:42 +02:00 · 2026-03-04 13:09:10 +01:00
parent 9433de75b8
commit c7cd4f9e17
2 changed files with 9 additions and 5 deletions
@@ -52,7 +52,7 @@ const TITLE_FLASH_INTERVAL_MS = 1500;       // Title flash rate
 const BROWSER_NOTIF_RATE_LIMIT_MS = 3000;   // Rate limit for browser notifications
 const AUTO_CLOSE_NOTIFICATION_MS = 8000;    // Auto-close browser notifications
 const THROTTLE_DELAY_MS = 100;              // General UI throttle delay
-const TERMINAL_CHUNK_SIZE = 128 * 1024;     // 128KB chunks for terminal data
+const TERMINAL_CHUNK_SIZE = 32 * 1024;      // 32KB chunks for terminal data (smaller to avoid WebGL GPU stalls)
 const TERMINAL_TAIL_SIZE = 256 * 1024;      // 256KB tail for initial load
 const SYNC_WAIT_TIMEOUT_MS = 50;            // Wait timeout for terminal sync
 const STATS_POLLING_INTERVAL_MS = 2000;     // System stats polling