7 Commits

Author	SHA1	Message	Date
Scott Lamb	d192d98129	more fixes to the upgrade guide	2018-01-30 21:14:53 -08:00
Scott Lamb	9a8ed69047	fix more formatting in upgrade guide	2018-01-30 17:01:44 -08:00
Scott Lamb	7566b6a38b	fix several formatting problems in upgrade guide	2018-01-30 17:01:03 -08:00
Scott Lamb	bfc0e2abe8	use my own logging package ... This supports formats that I find more useful; one that mimicks the Google glog package, and one that is similar but adapted for the systemd journal.	2017-03-26 00:01:48 -07:00
Scott Lamb	e1cb5f4204	small improvements to schema upgrade instructions	2017-01-01 22:58:27 -08:00
Scott Lamb	eee887b9a6	schema version 1 ... The advantages of the new schema are: * overlapping recordings can be unambiguously described and viewed. This is a significant problem right now; the clock on my cameras appears to run faster than the (NTP-synchronized) clock on my NVR. Thus, if an RTSP session drops and is quickly reconnected, there's likely to be overlap. * less I/O is required to view mp4s when there are multiple cameras. This is a pretty dramatic difference in the number of database read syscalls with pragma page_size = 1024 (605 -> 39 in one test), although I'm not sure how much of that maps to actual I/O wait time. That's probably as dramatic as it is due to overflow page chaining. But even with larger page sizes, there's an improvement. It helps to stop interleaving the video_index fields from different cameras. There are changes to the JSON API to take advantage of this, described in design/api.md. There's an upgrade procedure, described in guide/schema.md.	2016-12-20 22:08:18 -08:00
Scott Lamb	86dd36d7a5	version the sqlite3 database schema ... See guide/schema.md for instructions on upgrading past this commit.	2016-12-20 15:44:04 -08:00