{"id":100824,"date":"2021-07-24T10:22:56","date_gmt":"2021-07-24T08:23:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/analiz-vliyaniya-na-proizvoditelnost-dopolnenij-k-chrome"},"modified":"2021-07-24T10:22:56","modified_gmt":"2021-07-24T08:23:10","slug":"analiz-vliyaniya-na-proizvoditelnost-dopolnenij-k-chrome","status":"publish","type":"post","link":"https:\/\/prohoster.info\/it\/blog\/novosti-interneta\/analiz-vliyaniya-na-proizvoditelnost-dopolnenij-k-chrome","title":{"rendered":"Analisi dell'impatto sulle prestazioni delle estensioni di Chrome","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"<p>\u00c8 stato preparato un rapporto aggiornato sui risultati di uno studio sull'impatto delle estensioni pi\u00f9 popolari di Chrome sulla performance del browser e sul comfort dell'utente. Rispetto alla verifica effettuata l'anno scorso, nello studio di quest'anno, oltre a una semplice pagina di interruzione, \u00e8 stata valutata la variazione delle prestazioni durante l'apertura dei siti apple.com, toyota.com, The Independent e Pittsburgh Post-Gazette.     <\/p>\n<p>Le conclusioni dello studio non sono cambiate: molte estensioni popolari, come Honey, Evernote Web Clipper e Avira Browser Safety, possono ridurre significativamente le prestazioni di apertura dei siti in Chrome. D'altra parte, si osserva che le estensioni per il blocco della pubblicit\u00e0 e per la tutela della privacy possono sensibilmente migliorare le performance durante la navigazione su siti che presentano un elevato numero di blocchi pubblicitari.    <\/p>\n<p>Un aspetto interessante \u00e8 lo studio dell'impatto dell'uso dei bloccatori di pubblicit\u00e0 sulla velocit\u00e0 di apertura delle pagine. Disattivando il codice che gestisce il rendering degli annunci e dei tracker, il consumo di tempo di CPU durante l'apertura dei siti The Independent e Pittsburgh Post-Gazette utilizzando il pi\u00f9 efficace bloccatore Ghostery \u00e8 riuscito a ridursi da 17,5 secondi a 1,7 secondi, ovvero di 10 volte. Per il bloccante meno efficace tra quelli testati, Trustnav, il consumo di tempo di CPU \u00e8 diminuito a 7,4 secondi, ovvero del 57%.      <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/6299233319c6f99c8f161ace360b6746.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<p>Alcune estensioni per il blocco delle pubblicit\u00e0 consumano attivamente risorse della CPU in background, il che pu\u00f2, nonostante l'accelerazione del caricamento delle pagine, aumentare il carico complessivo sul sistema. Nel test combinato, che considera il carico sulla CPU durante l'apertura della pagina e in background, Ghostery e uBlock Origin dimostrano la massima efficienza.    <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/1d08bb268c32418a9c76f1a61bc368bd.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<p>Inoltre, oltre ad accelerare il caricamento delle pagine, l'uso dei bloccatori di pubblicit\u00e0 riduce significativamente il traffico (dal 43% al 66%) e il numero di richieste di rete inviate (dal 83% al 90%).    <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/9befbd3ebc74d31e2292e933242ca959.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>          <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/2aaf5145e2d861684fc3d69d87fc120d.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>      <\/p>\n<p>I blocchi pubblicitari riducono anche il consumo di memoria, ad esempio, utilizzando l'estensione Disconnect il consumo di memoria del browser quando si aprono le pagine di The Independent e Pittsburgh Post-Gazette diminuisce da 574 MB a 260 MB, ovvero del 54%, compensando cos\u00ec il consumo di memoria per memorizzare le liste di blocco.  <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/176e7255097324d5ffa4b35ca75d810a.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>          <\/p>\n<p>Nel test delle prestazioni delle estensioni, considerando le 100 estensioni pi\u00f9 popolari, all'apertura della pagina di segnalazione il maggior consumo di risorse si osserva con Evernote Web Clipper (consuma 368 ms di tempo CPU). Tra le estensioni che consumano risorse significative si possono citare anche l'estensione per la privacy Ghostery, il videomessenger Loom for Chrome, l'estensione per studenti Clever e i gestori di password Avira e LastPass, che superano il milione di installazioni.    <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/4fe980bb53b3c5411c6ecc78e4943dd1.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>      <\/p>\n<p>Nel test che apre il sito apple.com, la situazione cambia e al primo posto si classifica l'estensione Dark Reader, che spende circa 25 secondi di tempo CPU (principalmente a causa dell'adattamento delle immagini per il tema scuro). Risorse significative vengono anche consumate dall'estensione per la ricerca di coupon Honey (+825 ms).     <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/ef9919f3351d3e038e9478e3a64b3db2.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<p>All'apertura del sito Toyota, il Norton Password Manager emerge come il principale responsabile del carico parassitario sulla CPU.  <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/ffcad1ca41d79bc4d19eff7363b51335.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>      <\/p>\n<p>\u0412 \u0432\u044b\u0431\u043e\u0440\u043a\u0435 \u0438\u0437 1000 \u0441\u0430\u043c\u044b\u0445 \u043f\u043e\u043f\u0443\u043b\u044f\u0440\u043d\u044b\u0445 \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0439 \u043f\u043e \u043f\u043e\u0442\u0440\u0435\u0431\u043b\u0435\u043d\u0438\u044e \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 CPU \u0432\u043e \u0432\u0440\u0435\u043c\u044f \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0438 \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u044b \u043b\u0438\u0434\u0438\u0440\u0443\u044e\u0442 \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f: Ubersuggest (\u043f\u043e\u0442\u0440\u0435\u0431\u043b\u044f\u0435\u0442 1.6 \u0441\u0435\u043a\u0443\u043d\u0434 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043d\u043e\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438), ProWritingAid Grammar Checker (+658 \u043c\u0441), Meow (637 \u043c\u0441) \u0438 MozBar (+604 \u043c\u0441). \u041f\u043e \u043f\u043e\u0442\u0440\u0435\u0431\u043b\u0435\u043d\u0438\u044e \u0440\u0435\u0441\u0443\u0440\u0441\u043e\u0432 \u0432 \u0444\u043e\u043d\u0435 \u043b\u0438\u0434\u0438\u0440\u0443\u044e\u0442: Avira Safe Shopping (+2.5 \u0441\u0435\u043a.), TrafficLight (+1.04 \u0441\u0435\u043a.), Virtru Email Protection (+817 \u043c\u0441) \u0438 Stylebot (655 \u043c\u0441). \u041d\u0430\u0438\u0431\u043e\u043b\u044c\u0448\u0435\u0435 \u043f\u043e\u0442\u0440\u0435\u0431\u043b\u0435\u043d\u0438\u0435 \u043f\u0430\u043c\u044f\u0442\u0438 \u043d\u0430\u0431\u043b\u044e\u0434\u0430\u0435\u0442\u0441\u044f \u0443 \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0439: AdBlocker by Trustnav (+215\u041c\u0411), Ad-Blocker Pro (+211\u041c\u0411), Hola ad remover (198 \u041c\u0411) \u0438 Xodo PDF Viewer &#038; Editor (197\u041c\u0411). \u0414\u043b\u044f \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044f uBlock Origin \u043f\u043e\u0442\u0440\u0435\u0431\u043b\u044f\u0435\u0442 \u043f\u0440\u0438 \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u043a\u0435 \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u044b 27 \u043c\u0441 \u0432\u0440\u0435\u043c\u0435\u043d\u0438 CPU, \u0432 \u0444\u043e\u043d\u0435 \u0442\u0440\u0430\u0442\u0438\u0442 48 \u043c\u0441 \u043f\u0440\u043e\u0446\u0435\u0441\u0441\u043e\u0440\u043d\u043e\u0433\u043e \u0432\u0440\u0435\u043c\u0435\u043d\u0438 \u0438 \u0437\u0430\u043d\u0438\u043c\u0430\u0435\u0442 77 \u041c\u0411 \u043f\u0430\u043c\u044f\u0442\u0438.    <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/600b7a948ea65904ed4854325a13a6ef.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<p>Nel test su siti reali, la situazione peggiora. Ad esempio, il componente aggiuntivo Substitutions, che sostituisce automaticamente il codice sulla pagina, consuma 9,7 secondi di tempo CPU.    <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/388af32f84507f57179432a56600a1b1.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<p>Misurando il ritardo prima dell'inizio del rendering della pagina di ancoraggio, tra i 100 componenti aggiuntivi pi\u00f9 popolari, i peggiori risultati sono stati ottenuti da Clever, Lastpass e DuckDuckGo Privacy Essentials.  <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/2be039a0d2152f97d02ea15cb039709a.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>  <\/p>\n<p>Ripetendo il test sul sito apple.com, sono emersi notevoli problemi con Dark Reader, che ha ritardato l'inizio del rendering di 4 secondi.    <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/a22bf28b31eb6b12d67cdb21dbe0a532.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>  <\/p>\n<p>Sul sito toyota, i ritardi causati da Dark Reader sono stati meno significativi, e i principali risultati sono stati forniti dai blocchi dei contenuti indesiderati.    <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/d0bbc276b3099421d19e66fe2aae437e.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>      <\/p>\n<p>Nel test di consumo di risorse con la scheda in background, il punteggio peggiore \u00e8 stato registrato dal componente aggiuntivo Avira Safe Shopping, che ha consumato oltre 2 secondi di tempo CPU.  <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/b75f247c8dcf8606b2065a3c6c8f6334.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>  <\/p>\n<p>Ripetendo il test sul sito toyota, anche il consumo di tempo CPU superiore a 2 secondi \u00e8 stato registrato per il gestore di password Dashlane e per il blocco pubblicit\u00e0 AdGuard AdBlocker.  <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/99e549ee3ca887186be253a44cbe687e.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>  <\/p>\n<p>Testando 1000 componenti aggiuntivi sul sito The Independent, il consumo di tempo CPU in background per i componenti aggiuntivi uberAgent, Dashlane e Wappalyzer ha superato i 20 secondi.  <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/66d726b0536f8c71dac46532c8a0afbe.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<p>Per quanto riguarda il consumo di memoria, in questa categoria i plugin per il blocco degli annunci e la protezione della privacy sono in cima, poich\u00e9 devono mantenere in memoria database con elenchi di blocco. Tuttavia, nell'aprire un gran numero di siti web ricchi di pubblicit\u00e0 nel browser, il consumo totale di memoria del browser pu\u00f2 risultare inferiore rispetto a senza l'uso dei blocchi.    <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/a765e89bb3c48df29d81ecc4de053b46.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/33a7da6847c32193515def09b5b3dcbe.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>      <\/p>\n<p>Installando pi\u00f9 plugin, il consumo delle risorse si somma.  <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/49b0b7076f86a1f079c39d8a26c80bc6.png\" style=\"display:block;margin: 0 auto;\" \/><\/center>    <\/p>\n<p>Confrontando i risultati con la ricerca dell'anno scorso, i maggiori progressi si osservano nei plugin Grammarly, Microsoft Office, Okta Browser Plugin, Avira Safe Shopping e Avira Browser Safety, il cui consumo di tempo della CPU \u00e8 diminuito di oltre 100 ms. Il maggior degrado nel consumo di risorse \u00e8 stato osservato nei plugin Save to Pocket, Loom e Evernote.    <center><img decoding=\"async\" alt=\"Analisi dell&#039;impatto sulle prestazioni delle estensioni di Chrome \" src=\"\/wp-content\/uploads\/2021\/07\/b5fedc4162acf956bc20c1ef500a4deb.png\" style=\"display:block;margin: 0 auto;\" \/><\/center><br \/>\n<br \/>Fonte: <a content=\"nofollow\" rel=\"nofollow\" href=\"https:\/\/www.opennet.ru\/opennews\/art.shtml?num=55534\">opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"<p>\u041f\u043e\u0434\u0433\u043e\u0442\u043e\u0432\u043b\u0435\u043d \u043e\u0431\u043d\u043e\u0432\u043b\u0451\u043d\u043d\u044b\u0439 \u043e\u0442\u0447\u0451\u0442 \u0441 \u0440\u0435\u0437\u0443\u043b\u044c\u0442\u0430\u0442\u043e\u043c \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u044f \u0432\u043b\u0438\u044f\u043d\u0438\u044f \u043d\u0430 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u044c \u0431\u0440\u0430\u0443\u0437\u0435\u0440\u0430 \u0438 \u043a\u043e\u043c\u0444\u043e\u0440\u0442 \u0440\u0430\u0431\u043e\u0442\u044b \u043f\u043e\u043b\u044c\u0437\u043e\u0432\u0430\u0442\u0435\u043b\u044f \u0442\u044b\u0441\u044f\u0447\u0438 \u043d\u0430\u0438\u0431\u043e\u043b\u0435\u0435 \u043f\u043e\u043f\u0443\u043b\u044f\u0440\u043d\u044b\u0445 \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u0439 \u043a Chrome. \u041f\u043e \u0441\u0440\u0430\u0432\u043d\u0435\u043d\u0438\u044e \u0441 \u043f\u0440\u043e\u0432\u0435\u0440\u043a\u043e\u0439, \u043f\u0440\u043e\u0432\u0435\u0434\u0451\u043d\u043d\u043e\u0439 \u0432 \u043f\u0440\u043e\u0448\u043b\u043e\u043c \u0433\u043e\u0434\u0443, \u0432 \u043d\u043e\u0432\u043e\u043c \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u0438 \u043f\u043e\u043c\u0438\u043c\u043e \u043f\u0440\u043e\u0441\u0442\u043e\u0439 \u0441\u0442\u0440\u0430\u043d\u0438\u0446\u044b-\u0437\u0430\u0433\u043b\u0443\u0448\u043a\u0438 \u043e\u0446\u0435\u043d\u0438\u0432\u0430\u043b\u043e\u0441\u044c \u0438\u0437\u043c\u0435\u043d\u0435\u043d\u0438\u0435 \u043f\u0440\u043e\u0438\u0437\u0432\u043e\u0434\u0438\u0442\u0435\u043b\u044c\u043d\u043e\u0441\u0442\u0438 \u043f\u0440\u0438 \u043e\u0442\u043a\u0440\u044b\u0442\u0438\u0438 \u0441\u0430\u0439\u0442\u043e\u0432 apple.com, toyota.com, The Independent \u0438 Pittsburgh Post-Gazette. \u0412\u044b\u0432\u043e\u0434\u044b \u0438\u0441\u0441\u043b\u0435\u0434\u043e\u0432\u0430\u043d\u0438\u044f \u043d\u0435 \u0438\u0437\u043c\u0435\u043d\u0438\u043b\u0438\u0441\u044c: \u043c\u043d\u043e\u0433\u0438\u0435 \u043f\u043e\u043f\u0443\u043b\u044f\u0440\u043d\u044b\u0435 \u0434\u043e\u043f\u043e\u043b\u043d\u0435\u043d\u0438\u044f, \u0442\u0430\u043a\u0438\u0435 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