Hi Mel,
Thanks for your latest patch, I attach a perf report below with this on top
of all previous patches. There is still lock contention, though in a
different place.
Regarding Rik's question:
> > Mel asked for timings of the slow boots. It's very hard to give anything
> > useful here! A normal boot would be a minute or so, and many are like
> > that, but the slowest that I have seen (on 3.5.x) was several hours.
> > Basically, I just test many times until I get one which is noticeably
> > slow than normal and then run perf record on that one.
> >
> > The latest perf report for a slow boot is below. For the fast boots,
> > most of the time is in clean_page_c in do_huge_pmd_anonymous_page, but
> > for this slow one there is a lot of lock contention above that.
>
> How often do you run into slow boots, vs. fast ones?
It is about 1/3rd slow boots, some of which are slower than others. I do
about ten and send you the trace of the worst.
Experimentally, copying large files (the VM image files) immediately before
booting the VM seems to make a slow boot more likely.
Thanks,
Richard.
# ========
# captured on: Mon Sep 17 20:09:33 2012
# os release : 3.6.0-rc5-elastic+
# perf version : 3.5.2
# arch : x86_64
# nrcpus online : 16
# nrcpus avail : 16
# cpudesc : AMD Opteron(tm) Processor 6128
# cpuid : AuthenticAMD,16,9,1
# total memory : 131973280 kB
# cmdline : /home/root/bin/perf record -g -a
# event : name = cycles, type = 0, config = 0x0, config1 = 0x0, config2 = 0x0, excl_usr = 0, excl_kern = 0, id = { 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48 }
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# ========
#
# Samples: 4M of event 'cycles'
# Event count (approx.): 1616311320818
#
# Overhead Command Shared Object Symbol
# ........ ............... .................... ..............................................
#
59.97% qemu-kvm [kernel.kallsyms] [k] _raw_spin_lock_irqsave
|
--- _raw_spin_lock_irqsave
|
|--99.30%-- compact_checklock_irqsave
| |
| |--99.98%-- compaction_alloc
| | migrate_pages
| | compact_zone
| | compact_zone_order
| | try_to_compact_pages
| | __alloc_pages_direct_compact
| | __alloc_pages_nodemask
| | alloc_pages_vma
| | do_huge_pmd_anonymous_page
| | handle_mm_fault
| | __get_user_pages
| | get_user_page_nowait
| | hva_to_pfn.isra.17
| | __gfn_to_pfn
| | gfn_to_pfn_async
| | try_async_pf
| | tdp_page_fault
| | kvm_mmu_page_fault
| | pf_interception
| | handle_exit
| | kvm_arch_vcpu_ioctl_run
| | kvm_vcpu_ioctl
| | do_vfs_ioctl
| | sys_ioctl
| | system_call_fastpath
| | ioctl
| | |
| | |--84.28%-- 0x10100000006
| | |
| | --15.72%-- 0x10100000002
| --0.02%-- [...]
|
|--0.65%-- compaction_alloc
| migrate_pages
| compact_zone
| compact_zone_order
| try_to_compact_pages
| __alloc_pages_direct_compact
| __alloc_pages_nodemask
| alloc_pages_vma
| do_huge_pmd_anonymous_page
| handle_mm_fault
| __get_user_pages
| get_user_page_nowait
| hva_to_pfn.isra.17
| __gfn_to_pfn
| gfn_to_pfn_async
| try_async_pf
| tdp_page_fault
| kvm_mmu_page_fault
| pf_interception
| handle_exit
| kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--83.37%-- 0x10100000006
| |
| --16.63%-- 0x10100000002
--0.05%-- [...]
12.27% qemu-kvm [kernel.kallsyms] [k] isolate_freepages_block
|
--- isolate_freepages_block
|
|--99.99%-- compaction_alloc
| migrate_pages
| compact_zone
| compact_zone_order
| try_to_compact_pages
| __alloc_pages_direct_compact
| __alloc_pages_nodemask
| alloc_pages_vma
| do_huge_pmd_anonymous_page
| handle_mm_fault
| __get_user_pages
| get_user_page_nowait
| hva_to_pfn.isra.17
| __gfn_to_pfn
| gfn_to_pfn_async
| try_async_pf
| tdp_page_fault
| kvm_mmu_page_fault
| pf_interception
| handle_exit
| kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--82.90%-- 0x10100000006
| |
| --17.10%-- 0x10100000002
--0.01%-- [...]
7.90% qemu-kvm [kernel.kallsyms] [k] clear_page_c
|
--- clear_page_c
|
|--99.19%-- do_huge_pmd_anonymous_page
| handle_mm_fault
| __get_user_pages
| get_user_page_nowait
| hva_to_pfn.isra.17
| __gfn_to_pfn
| gfn_to_pfn_async
| try_async_pf
| tdp_page_fault
| kvm_mmu_page_fault
| pf_interception
| handle_exit
| kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--64.93%-- 0x10100000006
| |
| --35.07%-- 0x10100000002
|
--0.81%-- __alloc_pages_nodemask
|
|--84.23%-- alloc_pages_vma
| handle_pte_fault
| |
| |--99.62%-- handle_mm_fault
| | |
| | |--99.74%-- __get_user_pages
| | | get_user_page_nowait
| | | hva_to_pfn.isra.17
| | | __gfn_to_pfn
| | | gfn_to_pfn_async
| | | try_async_pf
| | | tdp_page_fault
| | | kvm_mmu_page_fault
| | | pf_interception
| | | handle_exit
| | | kvm_arch_vcpu_ioctl_run
| | | kvm_vcpu_ioctl
| | | do_vfs_ioctl
| | | sys_ioctl
| | | system_call_fastpath
| | | ioctl
| | | |
| | | |--76.24%-- 0x10100000006
| | | |
| | | --23.76%-- 0x10100000002
| | --0.26%-- [...]
| --0.38%-- [...]
|
--15.77%-- alloc_pages_current
pte_alloc_one
|
|--97.49%-- do_huge_pmd_anonymous_page
| handle_mm_fault
| __get_user_pages
| get_user_page_nowait
| hva_to_pfn.isra.17
| __gfn_to_pfn
| gfn_to_pfn_async
| try_async_pf
| tdp_page_fault
| kvm_mmu_page_fault
| pf_interception
| handle_exit
| kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--57.31%-- 0x10100000006
| |
| --42.69%-- 0x10100000002
|
--2.51%-- __pte_alloc
do_huge_pmd_anonymous_page
handle_mm_fault
__get_user_pages
get_user_page_nowait
hva_to_pfn.isra.17
__gfn_to_pfn
gfn_to_pfn_async
try_async_pf
tdp_page_fault
kvm_mmu_page_fault
pf_interception
handle_exit
kvm_arch_vcpu_ioctl_run
kvm_vcpu_ioctl
do_vfs_ioctl
sys_ioctl
system_call_fastpath
ioctl
|
|--61.90%-- 0x10100000006
|
--38.10%-- 0x10100000002
2.66% ksmd [kernel.kallsyms] [k] smp_call_function_many
|
--- smp_call_function_many
|
|--99.99%-- native_flush_tlb_others
| |
| |--99.79%-- flush_tlb_page
| | ptep_clear_flush
| | try_to_merge_with_ksm_page
| | ksm_scan_thread
| | kthread
| | kernel_thread_helper
| --0.21%-- [...]
--0.01%-- [...]
1.62% qemu-kvm [kernel.kallsyms] [k] yield_to
|
--- yield_to
|
|--99.58%-- kvm_vcpu_yield_to
| kvm_vcpu_on_spin
| pause_interception
| handle_exit
| kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--77.42%-- 0x10100000006
| |
| --22.58%-- 0x10100000002
--0.42%-- [...]
1.17% ksmd [kernel.kallsyms] [k] memcmp
|
--- memcmp
|
|--99.65%-- memcmp_pages
| |
| |--78.67%-- ksm_scan_thread
| | kthread
| | kernel_thread_helper
| |
| --21.33%-- try_to_merge_with_ksm_page
| ksm_scan_thread
| kthread
| kernel_thread_helper
--0.35%-- [...]
1.16% qemu-kvm [kernel.kallsyms] [k] svm_vcpu_run
|
--- svm_vcpu_run
|
|--99.47%-- kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--74.69%-- 0x10100000006
| |
| --25.31%-- 0x10100000002
|
--0.53%-- kvm_vcpu_ioctl
do_vfs_ioctl
sys_ioctl
system_call_fastpath
ioctl
|
|--72.19%-- 0x10100000006
|
--27.81%-- 0x10100000002
1.09% swapper [kernel.kallsyms] [k] default_idle
|
--- default_idle
|
|--99.73%-- cpu_idle
| |
| |--84.39%-- start_secondary
| |
| --15.61%-- rest_init
| start_kernel
| x86_64_start_reservations
| x86_64_start_kernel
--0.27%-- [...]
0.85% qemu-kvm [kernel.kallsyms] [k] kvm_vcpu_on_spin
|
--- kvm_vcpu_on_spin
|
|--99.40%-- pause_interception
| handle_exit
| kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--76.92%-- 0x10100000006
| |
| --23.08%-- 0x10100000002
|
--0.60%-- handle_exit
kvm_arch_vcpu_ioctl_run
kvm_vcpu_ioctl
do_vfs_ioctl
sys_ioctl
system_call_fastpath
ioctl
|
|--75.02%-- 0x10100000006
|
--24.98%-- 0x10100000002
0.60% qemu-kvm [kernel.kallsyms] [k] __srcu_read_lock
|
--- __srcu_read_lock
|
|--92.87%-- kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--76.37%-- 0x10100000006
| |
| --23.63%-- 0x10100000002
|
|--6.18%-- kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--74.92%-- 0x10100000006
| |
| --25.08%-- 0x10100000002
--0.95%-- [...]
0.60% qemu-kvm [kernel.kallsyms] [k] __rcu_read_unlock
|
--- __rcu_read_unlock
|
|--79.70%-- get_pid_task
| kvm_vcpu_yield_to
| kvm_vcpu_on_spin
| pause_interception
| handle_exit
| kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--75.95%-- 0x10100000006
| |
| --24.05%-- 0x10100000002
|
|--11.44%-- kvm_vcpu_yield_to
| kvm_vcpu_on_spin
| pause_interception
| handle_exit
| kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--75.32%-- 0x10100000006
| |
| --24.68%-- 0x10100000002
|
|--3.51%-- kvm_vcpu_on_spin
| pause_interception
| handle_exit
| kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--76.56%-- 0x10100000006
| |
| --23.44%-- 0x10100000002
|
|--1.88%-- do_select
| core_sys_select
| sys_select
| system_call_fastpath
| __select
| 0x0
|
|--1.30%-- fget_light
| |
| |--71.87%-- do_select
| | core_sys_select
| | sys_select
| | system_call_fastpath
| | __select
| | 0x0
| |
| |--15.50%-- sys_ioctl
| | system_call_fastpath
| | ioctl
| | |
| | |--50.94%-- 0x10100000002
| | |
| | |--17.13%-- 0x2740310
| | | 0x0
| | |
| | |--13.07%-- 0x225c310
| | | 0x0
| | |
| | |--9.95%-- 0x2792310
| | | 0x0
| | |
| | |--3.64%-- 0x75ed8548202c4b83
| | |
| | |--1.87%-- 0x8800000
| | | 0x26433c0
| | |
| | |--1.79%-- 0x10100000006
| | |
| | |--0.95%-- 0x19800000
| | | 0x26953c0
| | |
| | --0.67%-- 0x24bc8b4400000098
| |
| |--7.32%-- sys_read
| | system_call_fastpath
| | read
| | |
| | --100.00%-- pthread_mutex_lock@plt
| |
| |--4.03%-- sys_write
| | system_call_fastpath
| | write
| | |
| | --100.00%-- 0x0
| |
| |--0.69%-- sys_pread64
| | system_call_fastpath
| | pread64
| | 0x269d260
| | 0x80
| | 0x480050b9e1058b48
| --0.59%-- [...]
--2.18%-- [...]
0.49% qemu-kvm [kernel.kallsyms] [k] _raw_spin_lock
|
--- _raw_spin_lock
|
|--50.00%-- yield_to
| kvm_vcpu_yield_to
| kvm_vcpu_on_spin
| pause_interception
| handle_exit
| kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--77.93%-- 0x10100000006
| |
| --22.07%-- 0x10100000002
|
|--11.97%-- free_pcppages_bulk
| |
| |--67.09%-- free_hot_cold_page
| | |
| | |--87.14%-- free_hot_cold_page_list
| | | |
| | | |--62.82%-- shrink_page_list
| | | | shrink_inactive_list
| | | | shrink_lruvec
| | | | try_to_free_pages
| | | | __alloc_pages_nodemask
| | | | alloc_pages_vma
| | | | do_huge_pmd_anonymous_page
| | | | handle_mm_fault
| | | | __get_user_pages
| | | | get_user_page_nowait
| | | | hva_to_pfn.isra.17
| | | | __gfn_to_pfn
| | | | gfn_to_pfn_async
| | | | try_async_pf
| | | | tdp_page_fault
| | | | kvm_mmu_page_fault
| | | | pf_interception
| | | | handle_exit
| | | | kvm_arch_vcpu_ioctl_run
| | | | kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
| | | | |
| | | | |--77.85%-- 0x10100000006
| | | | |
| | | | --22.15%-- 0x10100000002
| | | |
| | | --37.18%-- release_pages
| | | pagevec_lru_move_fn
| | | __pagevec_lru_add
| | | |
| | | |--99.76%-- __lru_cache_add
| | | | lru_cache_add_lru
| | | | putback_lru_page
| | | | migrate_pages
| | | | compact_zone
| | | | compact_zone_order
| | | | try_to_compact_pages
| | | | __alloc_pages_direct_compact
| | | | __alloc_pages_nodemask
| | | | alloc_pages_vma
| | | | do_huge_pmd_anonymous_page
| | | | handle_mm_fault
| | | | __get_user_pages
| | | | get_user_page_nowait
| | | | hva_to_pfn.isra.17
| | | | __gfn_to_pfn
| | | | gfn_to_pfn_async
| | | | try_async_pf
| | | | tdp_page_fault
| | | | kvm_mmu_page_fault
| | | | pf_interception
| | | | handle_exit
| | | | kvm_arch_vcpu_ioctl_run
| | | | kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
| | | | |
| | | | |--80.37%-- 0x10100000006
| | | | |
| | | | --19.63%-- 0x10100000002
| | | --0.24%-- [...]
| | |
| | |--10.98%-- __free_pages
| | | |
| | | |--98.77%-- release_freepages
| | | | compact_zone
| | | | compact_zone_order
| | | | try_to_compact_pages
| | | | __alloc_pages_direct_compact
| | | | __alloc_pages_nodemask
| | | | alloc_pages_vma
| | | | do_huge_pmd_anonymous_page
| | | | handle_mm_fault
| | | | __get_user_pages
| | | | get_user_page_nowait
| | | | hva_to_pfn.isra.17
| | | | __gfn_to_pfn
| | | | gfn_to_pfn_async
| | | | try_async_pf
| | | | tdp_page_fault
| | | | kvm_mmu_page_fault
| | | | pf_interception
| | | | handle_exit
| | | | kvm_arch_vcpu_ioctl_run
| | | | kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
| | | | |
| | | | |--80.81%-- 0x10100000006
| | | | |
| | | | --19.19%-- 0x10100000002
| | | |
| | | --1.23%-- __free_slab
| | | discard_slab
| | | unfreeze_partials
| | | put_cpu_partial
| | | __slab_free
| | | kmem_cache_free
| | | free_buffer_head
| | | try_to_free_buffers
| | | jbd2_journal_try_to_free_buffers
| | | ext4_releasepage
| | | try_to_release_page
| | | shrink_page_list
| | | shrink_inactive_list
| | | shrink_lruvec
| | | try_to_free_pages
| | | __alloc_pages_nodemask
| | | alloc_pages_vma
| | | do_huge_pmd_anonymous_page
| | | handle_mm_fault
| | | __get_user_pages
| | | get_user_page_nowait
| | | hva_to_pfn.isra.17
| | | __gfn_to_pfn
| | | gfn_to_pfn_async
| | | try_async_pf
| | | tdp_page_fault
| | | kvm_mmu_page_fault
| | | pf_interception
| | | handle_exit
| | | kvm_arch_vcpu_ioctl_run
| | | kvm_vcpu_ioctl
| | | do_vfs_ioctl
| | | sys_ioctl
| | | system_call_fastpath
| | | ioctl
| | | |
| | | |--57.92%-- 0x10100000006
| | | |
| | | --42.08%-- 0x10100000002
| | |
| | --1.88%-- __put_single_page
| | put_page
| | putback_lru_page
| | migrate_pages
| | compact_zone
| | compact_zone_order
| | try_to_compact_pages
| | __alloc_pages_direct_compact
| | __alloc_pages_nodemask
| | alloc_pages_vma
| | do_huge_pmd_anonymous_page
| | handle_mm_fault
| | __get_user_pages
| | get_user_page_nowait
| | hva_to_pfn.isra.17
| | __gfn_to_pfn
| | gfn_to_pfn_async
| | try_async_pf
| | tdp_page_fault
| | kvm_mmu_page_fault
| | pf_interception
| | handle_exit
| | kvm_arch_vcpu_ioctl_run
| | kvm_vcpu_ioctl
| | do_vfs_ioctl
| | sys_ioctl
| | system_call_fastpath
| | ioctl
| | |
| | |--62.44%-- 0x10100000006
| | |
| | --37.56%-- 0x10100000002
| |
| --32.91%-- drain_pages
| |
| |--75.89%-- drain_local_pages
| | |
| | |--89.98%-- generic_smp_call_function_interrupt
| | | smp_call_function_interrupt
| | | call_function_interrupt
| | | |
| | | |--44.57%-- compaction_alloc
| | | | migrate_pages
| | | | compact_zone
| | | | compact_zone_order
| | | | try_to_compact_pages
| | | | __alloc_pages_direct_compact
| | | | __alloc_pages_nodemask
| | | | alloc_pages_vma
| | | | do_huge_pmd_anonymous_page
| | | | handle_mm_fault
| | | | __get_user_pages
| | | | get_user_page_nowait
| | | | hva_to_pfn.isra.17
| | | | __gfn_to_pfn
| | | | gfn_to_pfn_async
| | | | try_async_pf
| | | | tdp_page_fault
| | | | kvm_mmu_page_fault
| | | | pf_interception
| | | | handle_exit
| | | | kvm_arch_vcpu_ioctl_run
| | | | kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
| | | | |
| | | | |--79.27%-- 0x10100000006
| | | | |
| | | | --20.73%-- 0x10100000002
| | | |
| | | |--16.92%-- kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
| | | | |
| | | | |--86.24%-- 0x10100000006
| | | | |
| | | | --13.76%-- 0x10100000002
| | | |
| | | |--5.39%-- do_huge_pmd_anonymous_page
| | | | handle_mm_fault
| | | | __get_user_pages
| | | | get_user_page_nowait
| | | | hva_to_pfn.isra.17
| | | | __gfn_to_pfn
| | | | gfn_to_pfn_async
| | | | try_async_pf
| | | | tdp_page_fault
| | | | kvm_mmu_page_fault
| | | | pf_interception
| | | | handle_exit
| | | | kvm_arch_vcpu_ioctl_run
| | | | kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
| | | | |
| | | | |--75.62%-- 0x10100000006
| | | | |
| | | | --24.38%-- 0x10100000002
| | | |
| | | |--3.26%-- buffer_migrate_page
| | | | move_to_new_page
| | | | migrate_pages
| | | | compact_zone
| | | | compact_zone_order
| | | | try_to_compact_pages
| | | | __alloc_pages_direct_compact
| | | | __alloc_pages_nodemask
| | | | alloc_pages_vma
| | | | do_huge_pmd_anonymous_page
| | | | handle_mm_fault
| | | | __get_user_pages
| | | | get_user_page_nowait
| | | | hva_to_pfn.isra.17
| | | | __gfn_to_pfn
| | | | gfn_to_pfn_async
| | | | try_async_pf
| | | | tdp_page_fault
| | | | kvm_mmu_page_fault
| | | | pf_interception
| | | | handle_exit
| | | | kvm_arch_vcpu_ioctl_run
| | | | kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
| | | | |
| | | | |--85.62%-- 0x10100000006
| | | | |
| | | | --14.38%-- 0x10100000002
| | | |
| | | |--3.21%-- __remove_mapping
| | | | shrink_page_list
| | | | shrink_inactive_list
| | | | shrink_lruvec
| | | | try_to_free_pages
| | | | __alloc_pages_nodemask
| | | | alloc_pages_vma
| | | | do_huge_pmd_anonymous_page
| | | | handle_mm_fault
| | | | __get_user_pages
| | | | get_user_page_nowait
| | | | hva_to_pfn.isra.17
| | | | __gfn_to_pfn
| | | | gfn_to_pfn_async
| | | | try_async_pf
| | | | tdp_page_fault
| | | | kvm_mmu_page_fault
| | | | pf_interception
| | | | handle_exit
| | | | kvm_arch_vcpu_ioctl_run
| | | | kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
| | | | |
| | | | |--78.75%-- 0x10100000006
| | | | |
| | | | --21.25%-- 0x10100000002
| | | |
| | | |--3.01%-- free_hot_cold_page_list
| | | | shrink_page_list
| | | | shrink_inactive_list
| | | | shrink_lruvec
| | | | try_to_free_pages
| | | | __alloc_pages_nodemask
| | | | alloc_pages_vma
| | | | do_huge_pmd_anonymous_page
| | | | handle_mm_fault
| | | | __get_user_pages
| | | | get_user_page_nowait
| | | | hva_to_pfn.isra.17
| | | | __gfn_to_pfn
| | | | gfn_to_pfn_async
| | | | try_async_pf
| | | | tdp_page_fault
| | | | kvm_mmu_page_fault
| | | | pf_interception
| | | | handle_exit
| | | | kvm_arch_vcpu_ioctl_run
| | | | kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
| | | | |
| | | | |--84.48%-- 0x10100000006
| | | | |
| | | | --15.52%-- 0x10100000002
| | | |
| | | |--2.25%-- try_to_free_buffers
| | | | jbd2_journal_try_to_free_buffers
| | | | ext4_releasepage
| | | | try_to_release_page
| | | | shrink_page_list
| | | | shrink_inactive_list
| | | | shrink_lruvec
| | | | try_to_free_pages
| | | | __alloc_pages_nodemask
| | | | alloc_pages_vma
| | | | do_huge_pmd_anonymous_page
| | | | handle_mm_fault
| | | | __get_user_pages
| | | | get_user_page_nowait
| | | | hva_to_pfn.isra.17
| | | | __gfn_to_pfn
| | | | gfn_to_pfn_async
| | | | try_async_pf
| | | | tdp_page_fault
| | | | kvm_mmu_page_fault
| | | | pf_interception
| | | | handle_exit
| | | | kvm_arch_vcpu_ioctl_run
| | | | kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
| | | | |
| | | | |--58.91%-- 0x10100000006
| | | | |
| | | | --41.09%-- 0x10100000002
| | | |
| | | |--2.07%-- compact_zone
| | | | compact_zone_order
| | | | try_to_compact_pages
| | | | __alloc_pages_direct_compact
| | | | __alloc_pages_nodemask
| | | | alloc_pages_vma
| | | | do_huge_pmd_anonymous_page
| | | | handle_mm_fault
| | | | __get_user_pages
| | | | get_user_page_nowait
| | | | hva_to_pfn.isra.17
| | | | __gfn_to_pfn
| | | | gfn_to_pfn_async
| | | | try_async_pf
| | | | tdp_page_fault
| | | | kvm_mmu_page_fault
| | | | pf_interception
| | | | handle_exit
| | | | kvm_arch_vcpu_ioctl_run
| | | | kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
| | | | |
| | | | |--67.59%-- 0x10100000006
| | | | |
| | | | --32.41%-- 0x10100000002
| | | |
| | | |--1.80%-- native_flush_tlb_others
| | | | |
| | | | |--75.08%-- flush_tlb_page
| | | | | |
| | | | | |--82.69%-- ptep_clear_flush_young
| | | | | | page_referenced_one
| | | | | | page_referenced
| | | | | | shrink_active_list
| | | | | | shrink_lruvec
| | | | | | try_to_free_pages
| | | | | | __alloc_pages_nodemask
| | | | | | alloc_pages_vma
| | | | | | do_huge_pmd_anonymous_page
| | | | | | handle_mm_fault
| | | | | | __get_user_pages
| | | | | | get_user_page_nowait
| | | | | | hva_to_pfn.isra.17
| | | | | | __gfn_to_pfn
| | | | | | gfn_to_pfn_async
| | | | | | try_async_pf
| | | | | | tdp_page_fault
| | | | | | kvm_mmu_page_fault
| | | | | | pf_interception
| | | | | | handle_exit
| | | | | | kvm_arch_vcpu_ioctl_run
| | | | | | kvm_vcpu_ioctl
| | | | | | do_vfs_ioctl
| | | | | | sys_ioctl
| | | | | | system_call_fastpath
| | | | | | ioctl
| | | | | | |
| | | | | | |--78.99%-- 0x10100000006
| | | | | | |
| | | | | | --21.01%-- 0x10100000002
| | | | | |
| | | | | --17.31%-- ptep_clear_flush
| | | | | try_to_unmap_one
| | | | | try_to_unmap_anon
| | | | | try_to_unmap
| | | | | migrate_pages
| | | | | compact_zone
| | | | | compact_zone_order
| | | | | try_to_compact_pages
| | | | | __alloc_pages_direct_compact
| | | | | __alloc_pages_nodemask
| | | | | alloc_pages_vma
| | | | | do_huge_pmd_anonymous_page
| | | | | handle_mm_fault
| | | | | __get_user_pages
| | | | | get_user_page_nowait
| | | | | hva_to_pfn.isra.17
| | | | | __gfn_to_pfn
| | | | | gfn_to_pfn_async
| | | | | try_async_pf
| | | | | tdp_page_fault
| | | | | kvm_mmu_page_fault
| | | | | pf_interception
| | | | | handle_exit
| | | | | kvm_arch_vcpu_ioctl_run
| | | | | kvm_vcpu_ioctl
| | | | | do_vfs_ioctl
| | | | | sys_ioctl
| | | | | system_call_fastpath
| | | | | ioctl
| | | | | 0x10100000006
| | | | |
| | | | --24.92%-- flush_tlb_mm_range
| | | | pmdp_clear_flush_young
| | | | page_referenced_one
| | | | page_referenced
| | | | shrink_active_list
| | | | shrink_lruvec
| | | | try_to_free_pages
| | | | __alloc_pages_nodemask
| | | | alloc_pages_vma
| | | | do_huge_pmd_anonymous_page
| | | | handle_mm_fault
| | | | __get_user_pages
| | | | get_user_page_nowait
| | | | hva_to_pfn.isra.17
| | | | __gfn_to_pfn
| | | | gfn_to_pfn_async
| | | | try_async_pf
| | | | tdp_page_fault
| | | | kvm_mmu_page_fault
| | | | pf_interception
| | | | handle_exit
| | | | kvm_arch_vcpu_ioctl_run
| | | | kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
--
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