Ò»¡¢Õª»ú²Ù×÷ʱÑÓµÄϵͳÐÔÆ¿¾±
Õª»útime£¨AppSwitch Latency£©×÷ΪӰÏìÓû§ÌåÑéµÄ½¹µãÖ¸±ê£¬ÔÚ¼ÎÐËȦºÍÌìÑÄÉçÇøÕâÀ฻ýÌåÆ½Ì¨ÌåÏÖÓÈΪͻ³ö¡£¾²âÊÔ·¢Ã÷£¬µ±APP´¦ÓÚºǫ́¶³½á״̬ʱ£¬°²×¿ÏµÍ³µÄActivityÖØÆôºÄʱռÕûÌåʱ³¤µÄ62%£¬¶øiOSµÄSceneDelegateÖØÐÞÀú³ÌÏûºÄ¸ü´ï580ms¡£Õâµ¼ÖÂÓû§Ö´ÐÐ"Ö±½Ó·¿ª"²Ù×÷ʱ£¬³£ÔâÓö3-5ÃëµÄ°×ÆÁÆÚ´ý£¬ÏÔÖø½µµÍƽ̨ճÐÔ¡£
¶þ¡¢Àú³ÌÉúÃüÖÜÆÚ¾«×¼ÖÎÀí¼Æ»®
ÎªÍ»ÆÆÏµÍ³¼¶ÏÞÖÆ£¬¿ª·¢Õ߿ɽÓÄɶàÀú³Ì¼Ü¹¹¸ôÀë½¹µãÄ£¿é¡£½«¼ÎÐËȦµÄʵʱ̸ÌìЧÀÍפÁôÔÚ×ÔÁ¦Àú³Ì£¬ÅäºÏAndroidµÄkeepActivities»úÖÆ»òiOSµÄbackground tasks£¬¿ÉʹÄڴ泣פÂÊÌáÉýÖÁ87%¡£Êµ²âÊý¾ÝÏÔʾ£¬ÌìÑÄÉçÇøµÄͼƬԤ¼ÓÔØÄ£¿é½ÓÄɴ˼ƻ®ºó£¬Õª»útime´Ó2.3ÃëËõ¶ÌÖÁ780ms£¬Í¬Ê±°ü¹Üϵͳ×ÊÔ´ÏûºÄ½öÔöÌí15%¡£
Èý¡¢Òªº¦äÖȾ·¾¶µÄ½¥½øÊ½ÓÅ»¯
½çÃæäÖȾºÄʱռÆô¶¯Ê±³¤µÄ28%£¬ÕâÒªÇó¶Ô¼ÎÐËȦµÄÐÅÏ¢Á÷½á¹¹¾ÙÐÐרÏîˢС£½ÓÄÉÒì²½½á¹¹(AsyncLayoutInflater)ºÍÊÓͼ»º´æÕ½ÂÔ£¬ÅäºÏWebPÃûÌÃͼƬÀÁ¼ÓÔØ£¬¿ÉʹÊׯÁäÖȾʱ¼äѹËõÖÁ400msÄÚ¡£ÌØÊâÒª×¢ÖØµÄÊÇ£¬ÌìÑÄÉçÇøµÄ¸»Îı¾±à¼Æ÷ÐèÔ¤¼ÓÔØWeb×ÖÌå×ÊÔ´£¬×èÖ¹Æô¶¯Ê±µÄFOIT£¨²»¿É¼ûÎı¾ÉÁׯ£©Õ÷Ïó¡£
ËÄ¡¢¿çƽ̨ͳһµÄÊÖÒÕʵÏÖ·¾¶
FlutterÒýÇæµÄDart isolate»úÖÆÎªË«Æ½Ì¨ÓÅ»¯ÌṩÐÂ˼Ð÷¡£Í¨¹ý½«¼ÎÐËȦµÄÍÆ¼öË㷨ģ¿éÒÆÖÁ×ÔÁ¦isolateÖ´ÐУ¬°ü¹ÜÖ÷Ïß³ÌÎÞÛÕ±Õ¡£²âÊÔÅú×¢£¬¸Ã¼Æ»®Ê¹ÌìÑÄÉçÇøiOS¶ËµÄÆô¶¯ÎȹÌÐÔÌáÉý41%£¬ÌØÊâÊÇÔڵͶË×°±¸ÉÏ£¬Ò³ÃæÖ¡Âʲ¨¶¯·ù¶È´Ó32fpsËõ¼õÖÁ8fps¡£µ«ÐèСÐÄisolateͨѶ´øÀ´µÄÌØÊâÄڴ濪Ïú£¬½¨Òé¿ØÖÆÔÚ10MBãÐÖµÄÚ¡£
Îå¡¢AB²âÊÔÇý¶¯µÄÁ¿»¯µ÷ÓÅÕ½ÂÔ
½¨ÉèÍêÉÆµÄÐÔÄÜ¼à¿ØÏµÍ³ÊÇÒ»Á¬ÓÅ»¯µÄÒªº¦¡£Îª¼ÎÐËȦ¶¨ÖƶàάÂñµã¼Æ»®£¬º¸ÇÀäÆô¶¯/ÈÈÆô¶¯Â·¾¶¡¢¿ò¼Ü³õʼ»¯ºÄʱµÈ18¸ö½¹µãÖ¸±ê¡£Êý¾ÝÏÔʾ£¬Í¨¹ý½ûÓ÷ÇÐëÒªSDKµÄÔ¤¼ÓÔØ£¬ÌìÑÄÉçÇøµÄÆô¶¯Íß½âÂÊϽµ22.7%¡£Í¬Ê±£¬½ÓÄɶ¯Ì¬¹¦Ð§Ä£¿é(Dynamic Feature Modules)ʵÏÖ°´Ðè¼ÓÔØ£¬Ê¹×°ÖðüÌå»ýËõ¼õ31%£¬¼ä½ÓÌáÉýÏÂÔØ×ª»¯ÂÊ¡£
Áù¡¢ÏµÍ³¼¶ÐͬÓÅ»¯µÄ½ø½×̽Ë÷
Éî¶ÈÕûºÏAndroidµÄApp Startup APIÓëiOSµÄMetricKit¿ò¼Ü£¬¹¹½¨¿çƽ̨µÄÐÔÄÜ»ù×¼Ïß¡£Õë¶Ô¼ÎÐËȦµÄµØÀíΧÀ¸Ð§ÀÍ£¬½ÓÄÉJobSchedulerµÄ׼ȷ½ÐÐÑÕ½ÂÔ£¬Ê¹ºǫ́¶¨Î»ºÄµç½µµÍ58%¡£Í¨¹ýÄæÏòÆÊÎöϵͳÀú³Ìµ÷ÀíÕ½ÂÔ£¬·¢Ã÷µ÷½âÀú³Ìoom_adjÖµ¿É½«ÌìÑÄÉçÇø±£»îʱ³¤ÑÓÉìÖÁ143·ÖÖÓ£¬µ«ÐèÉóÉ÷´¦Öóͷ£ÓëϵͳµçÔ´ÖÎÀíµÄƽºâ¹ØÏµ¡£
±¾´ÎÓÅ»¯Êµ¼ù֤ʵ£¬"Õª»útimeÖ±½Ó·¿ª¼ÎÐËȦÌìÑÄ"µÄ½¹µãÍ»ÆÆµãÔÚÓÚÀú³ÌÉúÃüÖÜÆÚÖÎÀíÓëäÖȾ¹ÜÏßÖØ¹¹¡£½¨Ò鿪·¢Õß½¨ÉèʵʱÐÔÄÜ¿´°å£¬ÖØµã¹Ø×¢90·ÖλÆô¶¯ºÄʱ¡£Ëæ×ÅAndroid 14µÄFreeform WindowsÌØÕ÷ÆÕ¼°£¬¶à´°¿ÚģʽϵÄÀú³ÌÖÎÀí½«³ÉΪеÄÊÖÒÕ¹¥¼áÆ«Ïò¡£×îÖÕÄ¿µÄÊÇͨ¹ýϵͳÐÔÓÅ»¯£¬Ê¹Æ½Ì¨ÈÕ¾ùÆô¶¯´ÎÊýÌáÉý2.3±¶£¬Óû§Ô½ÈÕÁô´æÂÊ´ï78%ÒÔÉÏ¡£
Ò»¡¢Õª»ú²Ù×÷ʱÑÓµÄϵͳÐÔÆ¿¾±
Õª»útime£¨AppSwitch Latency£©×÷ΪӰÏìÓû§ÌåÑéµÄ½¹µãÖ¸±ê£¬ÔÚ¼ÎÐËȦºÍÌìÑÄÉçÇøÕâÀ฻ýÌåÆ½Ì¨ÌåÏÖÓÈΪͻ³ö¡£¾²âÊÔ·¢Ã÷£¬µ±APP´¦ÓÚºǫ́¶³½á״̬ʱ£¬°²×¿ÏµÍ³µÄActivityÖØÆôºÄʱռÕûÌåʱ³¤µÄ62%£¬¶øiOSµÄSceneDelegateÖØÐÞÀú³ÌÏûºÄ¸ü´ï580ms¡£Õâµ¼ÖÂÓû§Ö´ÐÐ"Ö±½Ó·¿ª"²Ù×÷ʱ£¬³£ÔâÓö3-5ÃëµÄ°×ÆÁÆÚ´ý£¬ÏÔÖø½µµÍƽ̨ճÐÔ¡£
¶þ¡¢Àú³ÌÉúÃüÖÜÆÚ¾«×¼ÖÎÀí¼Æ»®
ÎªÍ»ÆÆÏµÍ³¼¶ÏÞÖÆ£¬¿ª·¢Õ߿ɽÓÄɶàÀú³Ì¼Ü¹¹¸ôÀë½¹µãÄ£¿é¡£½«¼ÎÐËȦµÄʵʱ̸ÌìЧÀÍפÁôÔÚ×ÔÁ¦Àú³Ì£¬ÅäºÏAndroidµÄkeepActivities»úÖÆ»òiOSµÄbackground tasks£¬¿ÉʹÄڴ泣פÂÊÌáÉýÖÁ87%¡£Êµ²âÊý¾ÝÏÔʾ£¬ÌìÑÄÉçÇøµÄͼƬԤ¼ÓÔØÄ£¿é½ÓÄɴ˼ƻ®ºó£¬Õª»útime´Ó2.3ÃëËõ¶ÌÖÁ780ms£¬Í¬Ê±°ü¹Üϵͳ×ÊÔ´ÏûºÄ½öÔöÌí15%¡£
Èý¡¢Òªº¦äÖȾ·¾¶µÄ½¥½øÊ½ÓÅ»¯
½çÃæäÖȾºÄʱռÆô¶¯Ê±³¤µÄ28%£¬ÕâÒªÇó¶Ô¼ÎÐËȦµÄÐÅÏ¢Á÷½á¹¹¾ÙÐÐרÏîˢС£½ÓÄÉÒì²½½á¹¹(AsyncLayoutInflater)ºÍÊÓͼ»º´æÕ½ÂÔ£¬ÅäºÏWebPÃûÌÃͼƬÀÁ¼ÓÔØ£¬¿ÉʹÊׯÁäÖȾʱ¼äѹËõÖÁ400msÄÚ¡£ÌØÊâÒª×¢ÖØµÄÊÇ£¬ÌìÑÄÉçÇøµÄ¸»Îı¾±à¼Æ÷ÐèÔ¤¼ÓÔØWeb×ÖÌå×ÊÔ´£¬×èÖ¹Æô¶¯Ê±µÄFOIT£¨²»¿É¼ûÎı¾ÉÁׯ£©Õ÷Ïó¡£
ËÄ¡¢¿çƽ̨ͳһµÄÊÖÒÕʵÏÖ·¾¶
FlutterÒýÇæµÄDart isolate»úÖÆÎªË«Æ½Ì¨ÓÅ»¯ÌṩÐÂ˼Ð÷¡£Í¨¹ý½«¼ÎÐËȦµÄÍÆ¼öË㷨ģ¿éÒÆÖÁ×ÔÁ¦isolateÖ´ÐУ¬°ü¹ÜÖ÷Ïß³ÌÎÞÛÕ±Õ¡£²âÊÔÅú×¢£¬¸Ã¼Æ»®Ê¹ÌìÑÄÉçÇøiOS¶ËµÄÆô¶¯ÎȹÌÐÔÌáÉý41%£¬ÌØÊâÊÇÔڵͶË×°±¸ÉÏ£¬Ò³ÃæÖ¡Âʲ¨¶¯·ù¶È´Ó32fpsËõ¼õÖÁ8fps¡£µ«ÐèСÐÄisolateͨѶ´øÀ´µÄÌØÊâÄڴ濪Ïú£¬½¨Òé¿ØÖÆÔÚ10MBãÐÖµÄÚ¡£
Îå¡¢AB²âÊÔÇý¶¯µÄÁ¿»¯µ÷ÓÅÕ½ÂÔ
½¨ÉèÍêÉÆµÄÐÔÄÜ¼à¿ØÏµÍ³ÊÇÒ»Á¬ÓÅ»¯µÄÒªº¦¡£Îª¼ÎÐËȦ¶¨ÖƶàάÂñµã¼Æ»®£¬º¸ÇÀäÆô¶¯/ÈÈÆô¶¯Â·¾¶¡¢¿ò¼Ü³õʼ»¯ºÄʱµÈ18¸ö½¹µãÖ¸±ê¡£Êý¾ÝÏÔʾ£¬Í¨¹ý½ûÓ÷ÇÐëÒªSDKµÄÔ¤¼ÓÔØ£¬ÌìÑÄÉçÇøµÄÆô¶¯Íß½âÂÊϽµ22.7%¡£Í¬Ê±£¬½ÓÄɶ¯Ì¬¹¦Ð§Ä£¿é(Dynamic Feature Modules)ʵÏÖ°´Ðè¼ÓÔØ£¬Ê¹×°ÖðüÌå»ýËõ¼õ31%£¬¼ä½ÓÌáÉýÏÂÔØ×ª»¯ÂÊ¡£
Áù¡¢ÏµÍ³¼¶ÐͬÓÅ»¯µÄ½ø½×̽Ë÷
Éî¶ÈÕûºÏAndroidµÄApp Startup APIÓëiOSµÄMetricKit¿ò¼Ü£¬¹¹½¨¿çƽ̨µÄÐÔÄÜ»ù×¼Ïß¡£Õë¶Ô¼ÎÐËȦµÄµØÀíΧÀ¸Ð§ÀÍ£¬½ÓÄÉJobSchedulerµÄ׼ȷ½ÐÐÑÕ½ÂÔ£¬Ê¹ºǫ́¶¨Î»ºÄµç½µµÍ58%¡£Í¨¹ýÄæÏòÆÊÎöϵͳÀú³Ìµ÷ÀíÕ½ÂÔ£¬·¢Ã÷µ÷½âÀú³Ìoom_adjÖµ¿É½«ÌìÑÄÉçÇø±£»îʱ³¤ÑÓÉìÖÁ143·ÖÖÓ£¬µ«ÐèÉóÉ÷´¦Öóͷ£ÓëϵͳµçÔ´ÖÎÀíµÄƽºâ¹ØÏµ¡£
±¾´ÎÓÅ»¯Êµ¼ù֤ʵ£¬"Õª»útimeÖ±½Ó·¿ª¼ÎÐËȦÌìÑÄ"µÄ½¹µãÍ»ÆÆµãÔÚÓÚÀú³ÌÉúÃüÖÜÆÚÖÎÀíÓëäÖȾ¹ÜÏßÖØ¹¹¡£½¨Ò鿪·¢Õß½¨ÉèʵʱÐÔÄÜ¿´°å£¬ÖØµã¹Ø×¢90·ÖλÆô¶¯ºÄʱ¡£Ëæ×ÅAndroid 14µÄFreeform WindowsÌØÕ÷ÆÕ¼°£¬¶à´°¿ÚģʽϵÄÀú³ÌÖÎÀí½«³ÉΪеÄÊÖÒÕ¹¥¼áÆ«Ïò¡£×îÖÕÄ¿µÄÊÇͨ¹ýϵͳÐÔÓÅ»¯£¬Ê¹Æ½Ì¨ÈÕ¾ùÆô¶¯´ÎÊýÌáÉý2.3±¶£¬Óû§Ô½ÈÕÁô´æÂÊ´ï78%ÒÔÉÏ¡£