int64_t sensor_id = mog_arg_int(args, 0);
4KB (Vec) heap allocation on every read. The page cache returns data via .to_vec(), which creates a new allocation and copies it into the Vec even on cache hits. SQLite returns a direct pointer into pinned cache memory, creating zero copies. The Fjall database team measured this exact anti-pattern at 44% of runtime before building a custom ByteView type to eliminate it.
https://egraphs.zulipchat.com/#narrow/channel/556617-rambling/topic/Philip.20Zucker/near/574167694 Here I allude to maybe this is a case. I wonder where I pulled this from, because I didn’t really know what thinnings were?，这一点在新收录的资料中也有详细论述
synchronous: The default here (FULL) meant SQLite would force a full sync to disk after every transaction. But for most web apps, if you use NORMAL (sync at critical moments) along with the WAL journal, you get much faster write performance albeit with a slight risk of losing the last transaction if you have a crash or power failure. That’s usually acceptable though.
。关于这个话题，新收录的资料提供了深入分析
Jensen Huang says Nvidia is pulling back from OpenAI and Anthropic, but his explanation raises more questions than it answers
That code looks much better than the one before. No locks are required this time, which not only leads to less assembly code but also faster code at the same time.。新收录的资料对此有专业解读