3 ms·
On phones in android we even aggregated “once per hour” wake ups to save power noticeably, so it does matter actually.
by dmitrygr 3y ago
On phones in android we even aggregated “once per hour” wake ups to save power noticeably, so it does matter actually.
- ungamedplayer 3y agoI think you might be talking about different wake ups.
- sweetjuly 3y agoWake from suspend-to-RAM (and likely with a radio power up) is going to be gobs more expensive than a wake from retention because you're both coming from a much lower power state (you were doing great before and now you're not, so a big change in energy usage over baseline) and it has a high overhead (the core cluster/SoC has to go through power on reset and get reconfigured by SW). This greatly contrasts with a wake from WFI where at minimum all architectural state is retained but generally caches and predictors are retained for quite a while.