{"id":23275,"date":"2018-11-01T16:52:17","date_gmt":"2018-11-01T20:52:17","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=23275"},"modified":"2018-11-05T15:33:33","modified_gmt":"2018-11-05T20:33:33","slug":"superdupers-smart-wake","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2018\/11\/01\/superdupers-smart-wake\/","title":{"rendered":"SuperDuper’s Smart Wake"},"content":{"rendered":"

Dave Nanian<\/a>:<\/p>\n

Apple, of course, has its own “dark wake” feature, used by Power Nap. Dark wake, as is suggested by the name, wakes a system without turning on the screen. However, it’s not available to 3rd party applications and has task-specific limitations that tease but do not deliver a solution here.<\/p>

And you can’t put up a black screen on wake, or adjust the brightness, because it’s too late by the time the wake happens.<\/p>

[…]<\/p>

Basically, if we are running a minute before the backup is scheduled to run, we assume we’re also going to be running a minute later, and cancel any pending wakes for that time. So, if we have an event for 3am, at 2:59am we cancel that wake if we’re already running.<\/p>

That ensures that a system that’s already awake<\/strong> will not wake the screen, whereas a system that’s sleeping<\/strong> will wake as expected.<\/p><\/blockquote>\n

SuperDuper deserves an award for sweating so many details like this. Nanian’s posts are a sobering reminder of the difference between theory and practice in app development. A direct API is often missing, so you need to find roundabout solutions. And much remains undocumented and unreliable.<\/p>\n\n

Update (2018-11-05): Dave Nanian<\/a>:<\/p>\n

\n

The result of the rather intensive stress testing: once over about 700 sdautomatedcopycontrollers are queued up waiting, things get weird.<\/p>\n

In case it isn’t obvious: no one would ever do that. But it shouldn’t ever get weird, so I’m trying to fix it anyway.<\/p>\n<\/blockquote>","protected":false},"excerpt":{"rendered":"

Dave Nanian: Apple, of course, has its own “dark wake” feature, used by Power Nap. Dark wake, as is suggested by the name, wakes a system without turning on the screen. However, it’s not available to 3rd party applications and has task-specific limitations that tease but do not deliver a solution here.And you can’t put […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"2018-11-01T20:52:19Z","apple_news_api_id":"6b771045-96fb-4f6b-b052-381991167218","apple_news_api_modified_at":"2018-11-05T20:33:39Z","apple_news_api_revision":"AAAAAAAAAAAAAAAAAAAAAA==","apple_news_api_share_url":"https:\/\/apple.news\/Aa3cQRZb7T2uwUjgZkRZyGA","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[],"tags":[146,30,32,1609,369],"class_list":["post-23275","post","type-post","status-publish","format-standard","hentry","tag-backup","tag-mac","tag-macapp","tag-macos-10-14","tag-superduper"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/23275","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=23275"}],"version-history":[{"count":2,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/23275\/revisions"}],"predecessor-version":[{"id":23291,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/23275\/revisions\/23291"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=23275"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=23275"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=23275"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}