David Greenman eadf9e27cd These changes fix a couple of lingering VM problems: ... 1. The pageout daemon used to block under certain circumstances, and we needed to add new functionality that would cause the pageout daemon to block more often. Now, the pageout daemon mostly just gets rid of pages and kills processes when the system is out of swap. The swapping, rss limiting and object cache trimming have been folded into a new daemon called "vmdaemon". This new daemon does things that need to be done for the VM system, but can block. For example, if the vmdaemon blocks for memory, the pageout daemon can take care of it. If the pageout daemon had blocked for memory, it was difficult to handle the situation correctly (and in some cases, was impossible). 2. The collapse problem has now been entirely fixed. It now appears to be impossible to accumulate unnecessary vm objects. The object collapsing now occurs when ref counts drop to one (where it is more likely to be more simple anyway because less pages would be out on disk.) The original fixes were incomplete in that pathological circumstances could still be contrived to cause uncontrolled growth of swap. Also, the old code still, under steady state conditions, used more swap space than necessary. When using the new code, users will generally notice a significant decrease in swap space usage, and theoretically, the system should be leaving fewer unused pages around competing for memory. Submitted by: John Dyson		1994-11-25 07:58:29 +00:00
..
device_pager.c
device_pager.h
kern_lock.c
lock.h
pmap.h	pmap.h:	1994-11-14 08:19:08 +00:00
swap_pager.c	Fixed bugs in accounting of swap space that resulted in the pager thinking	1994-11-13 15:36:48 +00:00
swap_pager.h	Cosmetics: unused vars, ()'s, #include's &c &c to silence gcc.	1994-10-09 01:52:19 +00:00
vm_extern.h
vm_fault.c	Fixed bug where a read-behind to a negative offset would occur if the	1994-11-13 22:48:55 +00:00
vm_glue.c	Implemented swap locking via P_SWAPPING flag. It was possible for a process	1994-11-13 12:47:07 +00:00
vm_inherit.h
vm_init.c	Cosmetics: unused vars, ()'s, #include's &c &c to silence gcc.	1994-10-09 01:52:19 +00:00
vm_kern.c
vm_kern.h
vm_map.c	Cosmetics: unused vars, ()'s, #include's &c &c to silence gcc.	1994-10-09 01:52:19 +00:00
vm_map.h
vm_meter.c
vm_mmap.c	Cosmetics: unused vars, ()'s, #include's &c &c to silence gcc.	1994-10-09 01:52:19 +00:00
vm_object.c	These changes fix a couple of lingering VM problems:	1994-11-25 07:58:29 +00:00
vm_object.h	Added support for starting the experimental "vmdaemon" system process.	1994-11-06 05:07:53 +00:00
vm_page.c	Changed a thread_sleep into an spl protected tsleep. A deadlock can occur	1994-10-23 06:15:04 +00:00
vm_page.h	pmap.h:	1994-11-14 08:19:08 +00:00
vm_pageout.c	These changes fix a couple of lingering VM problems:	1994-11-25 07:58:29 +00:00
vm_pageout.h	Cosmetics: unused vars, ()'s, #include's &c &c to silence gcc.	1994-10-09 01:52:19 +00:00
vm_pager.c	Cosmetics: unused vars, ()'s, #include's &c &c to silence gcc.	1994-10-09 01:52:19 +00:00
vm_pager.h	Cosmetics: unused vars, ()'s, #include's &c &c to silence gcc.	1994-10-09 01:52:19 +00:00
vm_param.h
vm_prot.h
vm_swap.c	Preallocate the first swap block to work around a failure with swap starting	1994-11-22 08:47:20 +00:00
vm_unix.c
vm_user.c	Properly count object lookups and hits.	1994-10-15 10:28:47 +00:00
vm_vmio.c
vm.h
vnode_pager.c	Don't try to page to a vnode that had it's filesystem unmounted.	1994-11-24 14:43:22 +00:00
vnode_pager.h