157203 2016-04-29 14:44:41 -0700 Typing is really slow when there are many input text fields with values 2022-02-10 20:49:15 -0800 1 1 1 Unclassified WebKit New Bugs Safari 10 Mac macOS 10.12 NEW InRadar P2 Normal --- 1 mcdado webkit-unassigned barraclough bdakin bfulgham darin enrica jonlee kling mcdado rmondello rniwa sam simon.fraser steffen.weber webkit-bug-importer wenson_hsieh oldest_to_newest 1188796 0 mcdado 2016-04-29 14:44:41 -0700 When there is a huge amount of input fields on a page, the typing performance is very bad. Such pages do exists, for example string translation backends with collapsable fieldsets for each single set/page to translate. In this cases the PHP backend even needs to increase the max_input_vars. I created a page that shows how even on a current MBP Retina, performance is terrible. https://gist.github.com/mcdado/35d8ccb3d5c165c28ed6f70ffca68948 Also, after a while fans start spinning up and they wind down only when the backlog of typed characters are displayed. I made a video here comparing performance with latest Firefox 48, Chrome 50, and Safari Technnology Preview 3: http://cl.ly/0v1g3a3P3h3o I hope this helps! 1188873 1 kling 2016-04-29 16:55:49 -0700 This seems to be happening due an issue in Safari's form auto-fill mechanism. Apple people can see <rdar://problem/8555317> for more information. 1212684 2 mcdado 2016-07-20 00:58:59 -0700 Any news about this? Performance still sucks in this use case. 1212692 3 284093 mcdado 2016-07-20 01:25:52 -0700 Created attachment 284093 Test case 1. Input any high number 2. Click GO 3. Try to type in the text fields What do i see? It's extremely slow and laggy. What is the expected result? Fast and snappy. 1290543 4 mcdado 2017-03-23 12:37:43 -0700 Still an issue in Safari Technology Preview release 26. 1290705 5 webkit-bug-importer 2017-03-23 19:23:20 -0700 <rdar://problem/31234059> 1290706 6 kling 2017-03-23 19:30:28 -0700 The correct radar number is <rdar://problem/21705952> 1294605 7 simon.fraser 2017-04-05 13:13:27 -0700 rdar://problem/21705952 was used to fix an issue on https://www.boe.ca.gov/trace/report/ on pages having <select>s with lots of options. This bug now corresponds with rdar://problem/31460933. 1306779 8 mcdado 2017-05-10 03:02:32 -0700 Since release 29 of Safari TP things seems to be much better! Still there is an initial delay when starting to type, and changing fields also has a noticeable delay. 1356947 9 steffen.weber 2017-10-05 03:52:30 -0700 Safari 11 handles the attached test-case better but only because the input fields don't have a "value" attribute. Adding the attribute value="123" to the input fields immediately makes the test-case unusably slow even in Safari 11. Could somebody please have a look at this issue? 1364872 10 darin 2017-10-26 09:45:02 -0700 It‘s a bit frustrating to have this in the WebKit bug tracker since there is no problem in WebKit clients other than Safari. I believe this is a Safari problem and should not be tracked with an open WebKit bug. 1840170 11 bfulgham 2022-02-10 20:49:15 -0800 This is actually: <rdar://problem/21705952> 284093 2016-07-20 01:25:52 -0700 2016-07-20 01:25:52 -0700 Test case safari-many-inputs-sluggish-test-case.html text/html 3424 mcdado PCFET0NUWVBFIGh0bWw+CjxodG1sIGxhbmc9ImVuIj4KICA8aGVhZD4KICAgIDxtZXRhIGNoYXJz ZXQ9InV0Zi04Ij4KICAgIDxtZXRhIGh0dHAtZXF1aXY9IlgtVUEtQ29tcGF0aWJsZSIgY29udGVu dD0iSUU9ZWRnZSI+CiAgICA8bWV0YSBuYW1lPSJ2aWV3cG9ydCIgY29udGVudD0id2lkdGg9ZGV2 aWNlLXdpZHRoLCBpbml0aWFsLXNjYWxlPTEiPgogICAgPHRpdGxlPlRlc3QgY2FzZSBmb3IgaHVn ZSBhbW91bnQgb2YgaW5wdXQgZmllbGRzIG9uIHBhZ2U8L3RpdGxlPgoKICAgIDwhLS0gQm9vdHN0 cmFwOiBMYXRlc3QgY29tcGlsZWQgYW5kIG1pbmlmaWVkIENTUyAtLT4KICAgIDxsaW5rIHJlbD0i c3R5bGVzaGVldCIgaHJlZj0iaHR0cHM6Ly9tYXhjZG4uYm9vdHN0cmFwY2RuLmNvbS9ib290c3Ry YXAvMy4zLjYvY3NzL2Jvb3RzdHJhcC5taW4uY3NzIiBpbnRlZ3JpdHk9InNoYTM4NC0xcThtVEpP QVN4OGoxQXUrYTVXRFZuUGkybGtGZnd3RUFhOGhERGRqWmxwTGVneGhqVk1FMWZnaldQR21renM3 IiBjcm9zc29yaWdpbj0iYW5vbnltb3VzIj4KCiAgICA8IS0tIEJvb3RzdHJhcDogT3B0aW9uYWwg dGhlbWUgLS0+CiAgICA8bGluayByZWw9InN0eWxlc2hlZXQiIGhyZWY9Imh0dHBzOi8vbWF4Y2Ru LmJvb3RzdHJhcGNkbi5jb20vYm9vdHN0cmFwLzMuMy42L2Nzcy9ib290c3RyYXAtdGhlbWUubWlu LmNzcyIgaW50ZWdyaXR5PSJzaGEzODQtZkxXMk4wMWxNcWpha0JreDNsL005RWFodXdwU2ZlTnZW NjNKNWV6bjN1WnphcFQwdTdFWXNYTWpRViswRW41ciIgY3Jvc3NvcmlnaW49ImFub255bW91cyI+ CiAgPC9oZWFkPgogIDxib2R5PgogICAgPGRpdiBjbGFzcz0iY29udGFpbmVyIj4KICAgICAgPGgx PkhlbGxvLCA8c3Bhbj53b3JsZCE8L3NwYW4+PC9oMT4KCiAgICAgIDxwPkdlbmVyYXRlIGxpc3Qg d2l0aCB0aGlzIG1hbnkgaW5wdXRzOjwvcD4KCiAgICAgIDxkaXYgY2xhc3M9ImNvbnRhaW5lciI+ CiAgICAgICAgPGRpdiBjbGFzcz0iY29sLXhzLTYiPgogICAgICAgICAgPGRpdiBjbGFzcz0iaW5w dXQtZ3JvdXAiPgogICAgICAgICAgICA8aW5wdXQgaWQ9InNldCIgdHlwZT0idGV4dCIgY2xhc3M9 ImZvcm0tY29udHJvbCIgcGxhY2Vob2xkZXI9IjUwMDAiPgogICAgICAgICAgICA8c3BhbiBjbGFz cz0iaW5wdXQtZ3JvdXAtYnRuIj4KICAgICAgICAgICAgICA8YnV0dG9uIGlkPSJnbyIgY2xhc3M9 ImJ0biBidG4tZGVmYXVsdCIgdHlwZT0iYnV0dG9uIj5HTyE8L2J1dHRvbj4KICAgICAgICAgICAg PC9zcGFuPgogICAgICAgICAgPC9kaXY+CiAgICAgICAgPC9kaXY+CiAgICAgIDwvZGl2PgoKICAg ICAgPHAgaWQ9InJlc3VsdCI+PC9wPgoKICAgICAgPGRpdiBpZD0ibWFpbi10YWJsZSIgY2xhc3M9 ImNvbnRhaW5lciI+CgogICAgICA8L2Rpdj4KICAgIDwvZGl2PgoKICAgIDxzY3JpcHQgdHlwZT0i dGV4dC9qYXZhc2NyaXB0Ij4KCiAgICBmdW5jdGlvbiBnZW5lcmF0ZVJvd3NXaXRoSW5wdXRzKG1h eCkgewoKICAgICAgdmFyIG1haW5UYWJsZSA9IGRvY3VtZW50LmdldEVsZW1lbnRCeUlkKCdtYWlu LXRhYmxlJyk7CgogICAgICBpZiAodHlwZW9mIG1heCA9PT0gJ3VuZGVmaW5lZCcpIHsKICAgICAg ICBtYXggPSA1MDAwOwogICAgICB9CgogICAgICAvLyBDcmVhdGUgYSBzdXBlcmZsdW9zbHkgYWRv cm5lZCBET00gc3RydWN0dXJlCiAgICAgIGZvciAodmFyIGkgPSAwOyBpIDwgbWF4OyBpICs9IDEp IHsKICAgICAgICB2YXIgcm93ID0gZG9jdW1lbnQuY3JlYXRlRWxlbWVudCgnZGl2Jyk7CiAgICAg ICAgdmFyIGNvbHVtbkxhYmVsID0gZG9jdW1lbnQuY3JlYXRlRWxlbWVudCgnZGl2Jyk7CiAgICAg ICAgdmFyIGNvbHVtbkZpZWxkID0gZG9jdW1lbnQuY3JlYXRlRWxlbWVudCgnZGl2Jyk7CiAgICAg ICAgdmFyIGxhYmVsID0gZG9jdW1lbnQuY3JlYXRlVGV4dE5vZGUoJ0ZpZWxkICcgKyBpLnRvU3Ry aW5nKCkpOwogICAgICAgIHZhciBmaWVsZCA9IGRvY3VtZW50LmNyZWF0ZUVsZW1lbnQoJ2lucHV0 Jyk7CgogICAgICAgIHJvdy5jbGFzc05hbWUgPSAncm93JzsKICAgICAgICBjb2x1bW5MYWJlbC5j bGFzc05hbWUgPSAnY29sLXhzLTEgdGV4dC1yaWdodCc7CiAgICAgICAgY29sdW1uRmllbGQuY2xh c3NOYW1lID0gJ2NvbC14cy0xMSc7CiAgICAgICAgZmllbGQudHlwZSA9ICd0ZXh0JzsKICAgICAg ICBmaWVsZC5zdHlsZS53aWR0aCA9ICcxMDAlJzsKCiAgICAgICAgY29sdW1uTGFiZWwuYXBwZW5k Q2hpbGQobGFiZWwpOwogICAgICAgIGNvbHVtbkZpZWxkLmFwcGVuZENoaWxkKGZpZWxkKTsKICAg ICAgICByb3cuYXBwZW5kQ2hpbGQoY29sdW1uTGFiZWwpOwogICAgICAgIHJvdy5hcHBlbmRDaGls ZChjb2x1bW5GaWVsZCk7CiAgICAgICAgbWFpblRhYmxlLmFwcGVuZENoaWxkKHJvdyk7CiAgICAg IH0KCiAgICAgIHZhciByZXN1bHQgPSBkb2N1bWVudC5nZXRFbGVtZW50QnlJZCgncmVzdWx0Jyk7 CiAgICAgIHJlc3VsdC5pbm5lckhUTUwgPSAnVGhlcmUgYXJlIG5vdyAnICsgaS50b1N0cmluZygp ICsgJyBmaWVsZHMgb24gdGhpcyBwYWdlJzsKICAgIH0KCiAgICB2YXIgc2V0RmllbGQgPSBkb2N1 bWVudC5nZXRFbGVtZW50QnlJZCgnc2V0Jyk7CiAgICB2YXIgZ29CdXR0b24gPSBkb2N1bWVudC5n ZXRFbGVtZW50QnlJZCgnZ28nKTsKCiAgICBzZXRGaWVsZC5hZGRFdmVudExpc3RlbmVyKCdrZXlk b3duJywgZnVuY3Rpb24gKGV2ZW50KSB7CiAgICAgIHZhciBfdGhpcyA9IHRoaXM7CgogICAgICBp ZiAoZXZlbnQua2V5Q29kZSAhPT0gMTMpIHsKICAgICAgICByZXR1cm47CiAgICAgIH0KCiAgICAg IGlmIChfdGhpcy52YWx1ZSAhPT0gJycgJiYgcGFyc2VJbnQoX3RoaXMudmFsdWUsIDEwKSkgewog ICAgICAgIGdlbmVyYXRlUm93c1dpdGhJbnB1dHMoX3RoaXMudmFsdWUpOwogICAgICB9CiAgICB9 KTsKCiAgICBnb0J1dHRvbi5hZGRFdmVudExpc3RlbmVyKCdjbGljaycsIGZ1bmN0aW9uIChldmVu dCkgewogICAgICB2YXIgX2ZpZWxkID0gZG9jdW1lbnQuZ2V0RWxlbWVudEJ5SWQoJ3NldCcpOwoK ICAgICAgaWYgKF9maWVsZC52YWx1ZSAhPT0gJycgJiYgcGFyc2VJbnQoX2ZpZWxkLnZhbHVlLCAx MCkpIHsKICAgICAgICBnZW5lcmF0ZVJvd3NXaXRoSW5wdXRzKF9maWVsZC52YWx1ZSk7CiAgICAg IH0gZWxzZSBpZiAoX2ZpZWxkLnZhbHVlID09PSAnJykgewogICAgICAgIGdlbmVyYXRlUm93c1dp dGhJbnB1dHMoKTsKICAgICAgfQogICAgfSk7CgogICAgZG9jdW1lbnQuYWRkRXZlbnRMaXN0ZW5l cignRE9NQ29udGVudExvYWRlZCcsIGZ1bmN0aW9uICgpIHsKICAgICAgdmFyIGhlbGxvID0gZG9j dW1lbnQucXVlcnlTZWxlY3RvcignaDEgc3BhbicpOwogICAgICBoZWxsby5pbm5lckhUTUwgPSBu YXZpZ2F0b3IudXNlckFnZW50OwogICAgfSk7CgogICAgPC9zY3JpcHQ+CiAgPC9ib2R5Pgo8L2h0 bWw+Cg==