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9997c0481c
freebsd-dev/sys/vm
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Konstantin Belousov 9997c0481c Do not let vm_daemon run unbounded. 
On a load where single anonymous object consumes almost all memory on
the large system, swapout code executes the iteration over the
corresponding object page queue for long time, owning the map and
object locks.  This blocks pagedaemon which tries to lock the object,
and blocks other threads in the process in vm_fault() waiting for the
map lock.

Handle the issue by terminating the deactivation loop if we executed
too long and by yielding at the top level in vm_daemon.

Reported by:	peterj, pho
Reviewed by:	alc
Tested by:	pho (as part of the larger patch)
Sponsored by:	The FreeBSD Foundation
MFC after:	1 week
Differential revision:	https://reviews.freebsd.org/D13671
2018-01-01 19:27:33 +00:00
..
_vm_radix.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
default_pager.c SPDX: wrong license. 2017-11-30 15:45:42 +00:00
device_pager.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
memguard.c Eliminate kmem_arena and kmem_object in preparation for further NUMA commits. 2017-11-28 23:40:54 +00:00
memguard.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
phys_pager.c sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
pmap.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
redzone.c sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
redzone.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
sg_pager.c sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
swap_pager.c Previously, swap_pager_copy() freed swap blocks one at at time, via 2017-12-31 04:01:47 +00:00
swap_pager.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
uma_core.c Perform all accesses to uma_reclaim_needed using atomic(9) KPI. 2017-12-19 10:06:55 +00:00
uma_dbg.c sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
uma_dbg.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
uma_int.h Eliminate kmem_arena and kmem_object in preparation for further NUMA commits. 2017-11-28 23:40:54 +00:00
uma.h Eliminate kmem_arena and kmem_object in preparation for further NUMA commits. 2017-11-28 23:40:54 +00:00
vm_domain.c SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_domain.h SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_extern.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
vm_fault.c SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_glue.c SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_init.c SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_kern.c SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_kern.h SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_map.c Refactor vm_map_find(), creating a separate function, vm_map_alignspace(), 2017-12-26 17:59:37 +00:00
vm_map.h SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_meter.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
vm_mmap.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
vm_object.c Make the vm object bypass and collapse counters per CPU. 2017-12-25 19:36:04 +00:00
vm_object.h SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_page.c Fix two problems with the page daemon control loop. 2017-12-24 19:45:16 +00:00
vm_page.h SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_pageout.c After r327168, the variable "vm_pageout_wanted" can be static. 2017-12-29 17:02:22 +00:00
vm_pageout.h After r327168, the variable "vm_pageout_wanted" can be static. 2017-12-29 17:02:22 +00:00
vm_pager.c SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_pager.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
vm_param.h SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_phys.c Print the correct value when freelist is out of range. 2017-12-04 11:16:51 +00:00
vm_phys.h Move domain iterators into the page layer where domain selection should take 2017-11-28 23:18:35 +00:00
vm_radix.c sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
vm_radix.h sys: general adoption of SPDX licensing ID tags. 2017-11-27 15:23:17 +00:00
vm_reserv.c Move domain iterators into the page layer where domain selection should take 2017-11-28 23:18:35 +00:00
vm_reserv.h Move domain iterators into the page layer where domain selection should take 2017-11-28 23:18:35 +00:00
vm_swapout_dummy.c SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vm_swapout.c Do not let vm_daemon run unbounded. 2018-01-01 19:27:33 +00:00
vm_unix.c sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00
vm.h SPDX: Consider code from Carnegie-Mellon University. 2017-11-30 15:48:35 +00:00
vnode_pager.c spdx: initial adoption of licensing ID tags. 2017-11-18 14:26:50 +00:00
vnode_pager.h sys: further adoption of SPDX licensing ID tags. 2017-11-20 19:43:44 +00:00