使用深度睡眠复制perf top -E 100 --stdio > perf-top.txt     19.85%  perf                  [.] __symbols__insert       7.68%  perf                  [.] rb_next       4.60%  libc-2.26.so          [.] __strcmp_sse2_unaligned       4.20%  libelf-0.168.so       [.] gelf_getsym       3.92%  perf                  [.] dso__load_sym       3.86%  libc-2.26.so          [.] _int_malloc       3.60%  libc-2.26.so          [.] __libc_calloc       3.30%  libc-2.26.so          [.] vfprintf       2.95%  perf                  [.] rb_insert_color       2.61%  [kernel]              [k] prepare_exit_to_usermode       2.51%  perf                  [.] machine__map_x86_64_entry_trampolines       2.31%  perf                  [.] symbol__new       2.22%  [kernel]              [k] do_syscall_64       2.11%  libc-2.26.so          [.] __strlen_avx2  1.2.3.4.5.6.7.8.9.10.11.12.13.14.15.16.