id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	blockedby	blocking	branch_state	votes
2836	Faster directory load in certain (specific) cases	gotar		"If there's a need to enter directory containing thousands of entries, calling lstat() for every one of them is very expensive ...and sometimes not necessary. My suggestion:
0. make use of AC_STRUCT_DIRENT_D_TYPE to check for dirent.d_type existence for the rest to work at all,
1. if:
 - user has set some new option (like 'quick_cd' to be >0),
 - current panel view doesn't include UID/GID/mode/*time etc. (higher levels of 'quick_cd' may further narrow it down, I think quick_cd=1 should strip on size only, 2 for size and *time, and 3 ignore all the attributes),
2. then:
 - handle_dirent() for d_type==DT_DIR should skip mc_lstat(), instead put some predefined values (0s) when called from do_load_dir(),
 - keep it as it is for do_reload_dir(),
3. alt-t for such partial directory listing should reload directory when required (if some not loaded attrs need to be displayed).

This way quick_cd=1 omits lstat() for directories, when current panel view requests type/name/size - only size is lost and this is usually useless (and fast to retrieve via ctrl-space). With higher levels one can expand this behaviour up to entirely disabling lstat() for directories. Still, ctrl-r would bring all the data back."	enhancement	new	major	Future Releases	mc-core	master						no branch