Hi Rik, Mel and Shaohua,
Thank you for your latest patches. I attach my latest perf report for a slow
boot with all of these applied.
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.
Thanks,
Richard.
# ========
# captured on: Sat Sep 15 15:40:54 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 = { 65, 66, 67, 68, 69, 70, 71, 72, 73, 74, 75, 76, 77, 78, 79, 80 }
# HEADER_CPU_TOPOLOGY info available, use -I to display
# HEADER_NUMA_TOPOLOGY info available, use -I to display
# ========
#
# Samples: 3M of event 'cycles'
# Event count (approx.): 1457256240581
#
# Overhead Command Shared Object Symbol
# ........ ............... .................... ..............................................
#
58.49% qemu-kvm [kernel.kallsyms] [k] _raw_spin_lock_irqsave
|
--- _raw_spin_lock_irqsave
|
|--95.07%-- compact_checklock_irqsave
| |
| |--70.03%-- isolate_migratepages_range
| | 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
| | |
| | |--92.76%-- 0x10100000006
| | |
| | --7.24%-- 0x10100000002
| |
| --29.97%-- 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
| |
| |--90.69%-- 0x10100000006
| |
| --9.31%-- 0x10100000002
|
|--4.53%-- isolate_migratepages_range
| 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
| |
| |--92.22%-- 0x10100000006
| |
| --7.78%-- 0x10100000002
--0.40%-- [...]
13.14% qemu-kvm [kernel.kallsyms] [k] clear_page_c
|
--- clear_page_c
|
|--99.38%-- 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
| |
| |--51.86%-- 0x10100000006
| |
| |--48.14%-- 0x10100000002
| --0.01%-- [...]
|
--0.62%-- __alloc_pages_nodemask
|
|--76.27%-- alloc_pages_vma
| handle_pte_fault
| |
| |--99.57%-- handle_mm_fault
| | |
| | |--99.65%-- __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
| | | |
| | | |--91.77%-- 0x10100000006
| | | |
| | | --8.23%-- 0x10100000002
| | --0.35%-- [...]
| --0.43%-- [...]
|
--23.73%-- alloc_pages_current
|
|--99.20%-- pte_alloc_one
| |
| |--98.68%-- 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
| | |
| | |--58.61%-- 0x10100000002
| | |
| | --41.39%-- 0x10100000006
| |
| --1.32%-- __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
| 0x10100000006
|
|--0.69%-- __vmalloc_node_range
| __vmalloc_node
| vzalloc
| __kvm_set_memory_region
| kvm_set_memory_region
| kvm_vm_ioctl_set_memory_region
| kvm_vm_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
--0.12%-- [...]
6.31% qemu-kvm [kernel.kallsyms] [k] isolate_freepages_block
|
--- isolate_freepages_block
|
|--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
| |
| |--91.13%-- 0x10100000006
| |
| --8.87%-- 0x10100000002
--0.02%-- [...]
1.68% qemu-kvm [kernel.kallsyms] [k] yield_to
|
--- yield_to
|
|--99.65%-- 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
| |
| |--88.78%-- 0x10100000006
| |
| --11.22%-- 0x10100000002
--0.35%-- [...]
1.24% ksmd [kernel.kallsyms] [k] memcmp
|
--- memcmp
|
|--99.78%-- memcmp_pages
| |
| |--77.17%-- ksm_scan_thread
| | kthread
| | kernel_thread_helper
| |
| --22.83%-- try_to_merge_with_ksm_page
| ksm_scan_thread
| kthread
| kernel_thread_helper
--0.22%-- [...]
1.09% qemu-kvm [kernel.kallsyms] [k] svm_vcpu_run
|
--- svm_vcpu_run
|
|--99.44%-- kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--82.15%-- 0x10100000006
| |
| |--17.85%-- 0x10100000002
| --0.00%-- [...]
|
--0.56%-- kvm_vcpu_ioctl
do_vfs_ioctl
sys_ioctl
system_call_fastpath
ioctl
|
|--75.21%-- 0x10100000006
|
--24.79%-- 0x10100000002
1.09% swapper [kernel.kallsyms] [k] default_idle
|
--- default_idle
|
|--99.74%-- cpu_idle
| |
| |--76.31%-- start_secondary
| |
| --23.69%-- rest_init
| start_kernel
| x86_64_start_reservations
| x86_64_start_kernel
--0.26%-- [...]
1.08% ksmd [kernel.kallsyms] [k] smp_call_function_many
|
--- smp_call_function_many
|
|--99.97%-- native_flush_tlb_others
| |
| |--99.78%-- flush_tlb_page
| | ptep_clear_flush
| | try_to_merge_with_ksm_page
| | ksm_scan_thread
| | kthread
| | kernel_thread_helper
| --0.22%-- [...]
--0.03%-- [...]
0.77% qemu-kvm [kernel.kallsyms] [k] kvm_vcpu_on_spin
|
--- kvm_vcpu_on_spin
|
|--99.36%-- pause_interception
| handle_exit
| kvm_arch_vcpu_ioctl_run
| kvm_vcpu_ioctl
| do_vfs_ioctl
| sys_ioctl
| system_call_fastpath
| ioctl
| |
| |--90.08%-- 0x10100000006
| |
| |--9.92%-- 0x10100000002
| --0.00%-- [...]
|
--0.64%-- handle_exit
kvm_arch_vcpu_ioctl_run
kvm_vcpu_ioctl
do_vfs_ioctl
sys_ioctl
system_call_fastpath
ioctl
|
|--87.37%-- 0x10100000006
|
--12.63%-- 0x10100000002
0.75% qemu-kvm [kernel.kallsyms] [k] compact_zone
|
--- compact_zone
|
|--99.98%-- 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
| |
| |--91.29%-- 0x10100000006
| |
| --8.71%-- 0x10100000002
--0.02%-- [...]
0.68% qemu-kvm [kernel.kallsyms] [k] _raw_spin_lock
|
--- _raw_spin_lock
|
|--39.71%-- 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
| |
| |--90.52%-- 0x10100000006
| |
| --9.48%-- 0x10100000002
|
|--15.63%-- 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
| |
| |--90.96%-- 0x10100000006
| |
| --9.04%-- 0x10100000002
|
|--6.55%-- 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
| |
| |--78.78%-- 0x10100000006
| |
| --21.22%-- 0x10100000002
|
|--4.87%-- free_pcppages_bulk
| |
| |--51.10%-- free_hot_cold_page
| | |
| | |--83.60%-- free_hot_cold_page_list
| | | |
| | | |--62.17%-- release_pages
| | | | pagevec_lru_move_fn
| | | | __pagevec_lru_add
| | | | |
| | | | |--99.22%-- __lru_cache_add
| | | | | lru_cache_add_lru
| | | | | putback_lru_page
| | | | | |
| | | | | |--99.61%-- 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
| | | | | | |
| | | | | | |--88.98%-- 0x10100000006
| | | | | | |
| | | | | | --11.02%-- 0x10100000002
| | | | | --0.39%-- [...]
| | | | |
| | | | --0.78%-- lru_add_drain_cpu
| | | | lru_add_drain
| | | | migrate_prep_local
| | | | 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
| | | |
| | | --37.83%-- 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
| | | |
| | | |--86.38%-- 0x10100000006
| | | |
| | | --13.62%-- 0x10100000002
| | |
| | |--12.96%-- __free_pages
| | | |
| | | |--98.43%-- 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
| | | | |
| | | | |--90.49%-- 0x10100000006
| | | | |
| | | | --9.51%-- 0x10100000002
| | | |
| | | --1.57%-- __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
| | | bdev_try_to_free_page
| | | blkdev_releasepage
| | | try_to_release_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
| | | 0x10100000006
| | |
| | --3.44%-- __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
| | |
| | |--88.25%-- 0x10100000006
| | |
| | --11.75%-- 0x10100000002
| |
| --48.90%-- drain_pages
| |
| |--88.65%-- drain_local_pages
| | |
| | |--96.33%-- generic_smp_call_function_interrupt
| | | smp_call_function_interrupt
| | | call_function_interrupt
| | | |
| | | |--23.46%-- __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
| | | | |
| | | | |--93.81%-- 0x10100000006
| | | | |
| | | | --6.19%-- 0x10100000002
| | | |
| | | |--19.93%-- kvm_vcpu_ioctl
| | | | do_vfs_ioctl
| | | | sys_ioctl
| | | | system_call_fastpath
| | | | ioctl
| | | | |
| | | | |--93.65%-- 0x10100000006
| | | | |
| | | | --6.35%-- 0x10100000002
| | | |
| | | |--14.19%-- 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
| | | | |
| | | | |--89.88%-- 0x10100000006
| | | | |
| | | | --10.12%-- 0x10100000002
| | | |
| | | |--8.57%-- isolate_migratepages_range
| | | | 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
| | | | |
| | | | |--92.14%-- 0x10100000006
| | | | |
| | | | --7.86%-- 0x10100000002
| | | |
| | | |--5.05%-- 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
| | | | |
| | | | |--92.53%-- 0x10100000006
| | | | |
| | | | --7.47%-- 0x10100000002
| | | |
| | | |--4.49%-- 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
| | | | |
| | | | |--94.61%-- 0x10100000006
| | | | |
| | | | --5.39%-- 0x10100000002
| | | |
| | | |--2.80%-- 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
| | | | |
| | | | |--91.24%-- 0x10100000006
| | | | |
| | | | --8.76%-- 0x10100000002
| | | |
| | | |--1.96%-- 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
| | | | |
| | | | |--63.14%-- 0x10100000006
| | | | |
| | | | --36.86%-- 0x10100000002
| | | |
| | | |--1.62%-- 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
| | | | 0x10100000006
| | | |
| | | |--1.49%-- compact_checklock_irqsave
| | | | isolate_migratepages_range
| | | | 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
| | | |
| | | |--1.46%-- __mutex_lock_slowpath
| | | | mutex_lock
| | | | page_lock_anon_vma
| | | | 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
| | | | 0x10100000006
| | | |
| | | |--1.41%-- native_flush_tlb_others
| | | | flush_tlb_page
| | | | |
| | | | |--67.10%-- 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
--
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