Evitare attività lunghe che bloccano le richieste di rete relative agli annunci
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Panoramica
Questo controllo consente di verificare se la prima richiesta di annuncio viene ritardata o meno a causa di attività lunghe. Un'attività lunga è definita come codice JavaScript che blocca il thread principale per almeno 50 ms. Se prima di una richiesta di annuncio si verificano attività lunghe, il browser non sarà in grado di inviare la richiesta fino al completamento di tutte le attività.
Consigli
Esamina le attività che bloccano la prima richiesta di annuncio e scopri come rimuoverle o ridurne il tempo di esecuzione al di sotto di 100 ms. Alcuni approcci per ridurre i tempi di esecuzione includono:
Ottimizzare le attività per velocizzare l'esecuzione
Suddivisione delle attività in blocchi più piccoli, che vengono eseguiti singolarmente in meno di 100 ms
Rimandare le attività fino a quando non vengono effettuate le richieste di annunci
Spostare le attività fuori dal thread principale tramite un worker
Ulteriori informazioni
Questo controllo mostra le prime 10 attività più lunghe in base al tempo di esecuzione, ordinate per ora di inizio (ordine crescente).
[null,null,["Ultimo aggiornamento 2025-07-25 UTC."],[[["\u003cp\u003eThis audit identifies long-running JavaScript tasks (over 100ms) that delay the initial ad request, potentially impacting ad revenue.\u003c/p\u003e\n"],["\u003cp\u003eOptimizing, splitting, delaying, or offloading these tasks can improve ad loading times.\u003c/p\u003e\n"],["\u003cp\u003eThe audit highlights the top 10 longest tasks based on their execution time to help pinpoint problem areas.\u003c/p\u003e\n"],["\u003cp\u003eLong tasks block the main thread, preventing the browser from sending the ad request until they complete.\u003c/p\u003e\n"],["\u003cp\u003eAddressing these tasks is crucial for ensuring timely ad delivery and a smoother user experience.\u003c/p\u003e\n"]]],["This audit identifies long JavaScript tasks (100ms+) that delay the initial ad request. These tasks block the main thread, preventing the browser from issuing the request. The audit recommends reducing these tasks by optimizing, splitting them into smaller chunks, delaying their execution until after ad requests, or moving them off the main thread. The top ten longest tasks, sorted by start time, are displayed.\n"],null,["# Avoid long tasks that block ad-related network requests\n\nOverview\n--------\n\nThis audit checks whether or not the first ad request is being delayed by long\ntasks. A\n[long task](https://developer.mozilla.org/en-US/docs/Web/API/Long_Tasks_API) is\ndefined as JavaScript code that blocks the main thread for 50ms or more. If long\ntasks occur before an ad request, the browser will be unable to issue the\nrequest until all of the tasks complete.\n| **Note:** Although 50ms is the commonly accepted long task threshold, this audit will only flag tasks that block the main thread for 100ms or more. This is because shorter tasks generally have a smaller impact on ad loading.\n\nRecommendations\n---------------\n\nExamine the tasks that are blocking the first ad request and investigate ways to\nremove them or reduce their execution time below 100ms. Some approaches to\nreducing execution time include:\n\n- Optimizing tasks to execute faster\n- Splitting tasks into smaller chunks, which individually execute in \\\u003c 100ms\n- Delaying tasks until after ad requests are made\n- Moving tasks off of the main thread via a worker\n\nMore information\n----------------\n\nThis audit displays the top 10 longest tasks by execution time, sorted by start\ntime (ascending).\n\n[Are long JavaScript tasks delaying your Time to Interactive?](https://web.dev/long-tasks-devtools) \n\n[Inspect Network Activity In Chrome DevTools](https://developer.chrome.com/docs/devtools/network/) \n[View audit source](https://github.com/googleads/publisher-ads-lighthouse-plugin/tree/HEAD/lighthouse-plugin-publisher-ads/audits/ad-blocking-tasks.js) [Improve this article](https://github.com/googleads/publisher-ads-lighthouse-plugin/tree/HEAD/docs/audits/ad-blocking-tasks.md) [Report an issue](https://github.com/googleads/publisher-ads-lighthouse-plugin/issues/new?labels=documentation&template=documentation-feedback.md&title=Documentation+feedback%3A+ad-blocking-tasks.md)\n\n\u003cbr /\u003e"]]
