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45cc8519f5
freebsd-dev/sys/vm
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Colin Percival 45cc8519f5 tslog: Annotate parts of SYSINIT cpu 
Booting an amd64 kernel on Firecracker with 1 CPU and 128 MB of RAM,
SYSINIT cpu takes roughly 2770 us:
* 2280 us in vm_ksubmap_init
  * 535 us in kmem_malloc
    * 450 us in pmap_zero_page
  * 1720 us in pmap_growkernel
    * 1620 us in pmap_zero_page
* 80 us in bufinit
* 480 us in cpu_setregs
  * 430 us in cpu_setregs calling load_cr0

Much of this is hypervisor overhead: load_cr0 is slow because it traps
to the hypervisor, and 99% of the time in pmap_zero_page is spent when
we first touch the page, presumably due to the host Linux kernel
faulting in backing pages one by one.

Sponsored by:	https://www.patreon.com/cperciva
Differential Revision:	https://reviews.freebsd.org/D40327
2023-06-04 10:16:35 -07:00
..
_vm_phys.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
_vm_radix.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
device_pager.c vm_object_kvme_type(): reimplement by embedding kvme_type into pagerops 2021-05-13 20:10:35 +03:00
memguard.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
memguard.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
phys_pager.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
pmap.h Add pmap_enter(9) PMAP_ENTER_LARGEPAGE flag and implement it on amd64. 2020-09-09 21:50:24 +00:00
redzone.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
redzone.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
sg_pager.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
swap_pager.c vm: fix a number of functions to match the expected prototypes 2023-04-25 19:58:18 +02:00
swap_pager.h Make swap_pager_freespace() global 2022-12-09 14:15:37 +02:00
uma_core.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
uma_dbg.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
uma_dbg.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
uma_int.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
uma.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
vm_domainset.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
vm_domainset.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
vm_dumpset.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
vm_extern.h kmem_malloc/free: Use void * instead of vm_offset_t for kernel pointers. 2022-09-22 15:09:19 -07:00
vm_fault.c vm: add unlocked page lookup before trying vm_fault_soft_fast 2023-03-25 22:14:59 +00:00
vm_glue.c vm: ansify 2023-02-13 18:23:21 +00:00
vm_init.c tslog: Annotate parts of SYSINIT cpu 2023-06-04 10:16:35 -07:00
vm_kern.c tslog: Annotate parts of SYSINIT cpu 2023-06-04 10:16:35 -07:00
vm_kern.h Remove the VM map zone. 2020-08-17 13:02:01 +00:00
vm_map.c amd64: fix PKRU and swapout interaction 2023-04-15 02:53:59 +03:00
vm_map.h Rework how shared page related data is stored 2022-07-18 16:27:32 +02:00
vm_meter.c vmmeter(): Fix detection of the named swap objects 2022-02-02 11:39:58 +02:00
vm_mmap.c vm: Remove handling for OBJT_DEFAULT objects 2022-07-17 07:09:48 -04:00
vm_object.c Drop space in "vm object" lock name to improve wchan 2023-02-15 08:31:17 -05:00
vm_object.h vm: add VM_OBJECT_UNLOCK 2023-03-11 11:08:21 +00:00
vm_page.c vm: implement vm_page_reclaim_contig_domain_ext() 2023-05-09 13:09:34 -04:00
vm_page.h vm: implement vm_page_reclaim_contig_domain_ext() 2023-05-09 13:09:34 -04:00
vm_pageout.c vm: reduce lock contention when processing vm batchqueues 2022-12-14 14:34:07 -05:00
vm_pageout.h protosw: retire pr_drain and use EVENTHANDLER(9) directly 2022-08-17 11:50:31 -07:00
vm_pagequeue.h vm: centralize VM_BATCHQUEUE_SIZE definition 2023-01-21 14:30:00 -05:00
vm_pager.c vm: fix a number of functions to match the expected prototypes 2023-04-25 19:58:18 +02:00
vm_pager.h vm_pager: add method to veto page allocation 2022-12-09 14:15:37 +02:00
vm_param.h
vm_phys.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
vm_phys.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
vm_radix.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
vm_radix.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
vm_reserv.c spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
vm_reserv.h spdx: The BSD-2-Clause-FreeBSD identifier is obsolete, drop -FreeBSD 2023-05-12 10:44:03 -06:00
vm_swapout_dummy.c
vm_swapout.c vm: Use __diagused for variables only used in KASSERT(). 2022-04-13 16:08:20 -07:00
vm_unix.c Prepare to handle non-trivial errors from vm_map_delete(). 2020-09-09 21:34:31 +00:00
vm.h vm/vm.h: cleanup 2022-09-17 11:58:52 +03:00
vnode_pager.c vnode_pager_input: return runningbufspace back 2023-03-26 00:55:29 +02:00
vnode_pager.h