https://sourceware.org/bugzilla/show_bug.cgi?id=30358
--- Comment #1 from Sam James <sam at gentoo dot org> ---
If I run 'perf record ...' (... = command above), I get this from 'perf
report':
# Event count (approx.): 1111543334586
#
# Overhead Command Shared Object
Symbol
# ........ ............... .............................................
.......................................................
#
97.85% ld.bfd ld.bfd [.]
output_section_callback_sort
0.57% ld.bfd libz.so.1.2.13 [.]
inflate_fast
0.19% ld.bfd libbfd-2.40.0.gentoo-sys-devel-binutils-mt.so [.]
sec_merge_hash_lookup.lto_priv.0
0.06% ld.bfd libz.so.1.2.13 [.]
adler32_z
0.05% ld.bfd [zzstd] [k]
ZSTD_decompressSequences_bmi2.constprop.0
0.05% ld.bfd [kernel.kallsyms] [k]
copy_user_generic_string
0.04% ld.bfd libbfd-2.40.0.gentoo-sys-devel-binutils-mt.so [.]
bfd_lookup_arch
0.03% ld.bfd [kernel.kallsyms] [k]
clear_page_rep
0.03% ld.bfd [kernel.kallsyms] [k]
stackleak_erase
0.02% ld.bfd [kernel.kallsyms] [k]
psi_account_irqtime
0.02% ld.bfd libbfd-2.40.0.gentoo-sys-devel-binutils-mt.so [.]
_bfd_merged_section_offset.isra.0
0.02% ld.bfd ld.bfd [.]
walk_wild.lto_priv.0
0.02% ld.bfd [kernel.kallsyms] [k]
update_cfs_group
0.02% ld.bfd ld.bfd [.]
resolve_wild_sections
0.02% ld.bfd [lz4_compress] [k]
LZ4_compress_fast_extState
0.02% ld.bfd libz.so.1.2.13 [.]
inflate_table
0.02% ld.bfd [kernel.kallsyms] [k]
asm_exc_page_fault
0.01% ld.bfd [kernel.kallsyms] [k]
memset
0.01% ld.bfd libc.so.6 [.]
0x000000000015505d
0.01% ld.bfd [kernel.kallsyms] [k]
update_curr
0.01% ld.bfd [kernel.kallsyms] [k]
exit_to_user_mode_prepare
0.01% ld.bfd ld.bfd [.]
lang_process
0.01% ld.bfd libc.so.6 [.]
malloc
0.01% ld.bfd [kernel.kallsyms] [k]
asm_sysvec_apic_timer_interrupt
0.01% ld.bfd libbfd-2.40.0.gentoo-sys-devel-binutils-mt.so [.]
_bfd_elf_link_iterate_on_relocs
0.01% ld.bfd libbfd-2.40.0.gentoo-sys-devel-binutils-mt.so [.]
bfd_hash_lookup
0.01% ld.bfd libbfd-2.40.0.gentoo-sys-devel-binutils-mt.so [.]
_bfd_elf_merge_sections
0.01% ld.bfd libbfd-2.40.0.gentoo-sys-devel-binutils-mt.so [.]
bfd_elf_final_link
0.01% ld.bfd [kernel.kallsyms] [k]
task_tick_fair
0.01% ld.bfd [kernel.kallsyms] [k]
__handle_mm_fault
0.01% ld.bfd libz.so.1.2.13 [.]
inflate
0.01% ld.bfd libbfd-2.40.0.gentoo-sys-devel-binutils-mt.so [.]
_bfd_elf_make_section_from_shdr
0.01% ld.bfd libbfd-2.40.0.gentoo-sys-devel-binutils-mt.so [.]
elf_link_read_relocs_from_section
[...]
(Tarball with files coming.)
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