The CPU usage of sphinx-autobuild is very high.

[ramwin]

myproject repository: https://github.com/ramwin/python-reference

the htop commands shows that the sphinx-autobuild use 26.5% cpu, but there is no output in the screen (I run sphinx-autobuild with --versbose)

generating indices... genindex done
writing additional pages... search done
dumping search index in Chinese (code: zh)... done
dumping object inventory... done
build succeeded, 6 warnings.

The HTML pages are in _build/html.
[sphinx-autobuild] Serving on http://127.0.0.1:18000
[sphinx-autobuild] Waiting to detect changes...

• my system: WLS on windows 11

[#201#wangx@wangxiang:python-reference[] $ lsb_release -a
No LSB modules are available.
Distributor ID: Ubuntu
Description:    Ubuntu 24.04.3 LTS
Release:        24.04
Codename:       noble
[#1#wangx@wangxiang:~ $ uname -a
Linux wangxiang 6.6.87.2-microsoft-standard-WSL2 #1 SMP PREEMPT_DYNAMIC Thu Jun  5 18:30:46 UTC 2025 x86_64 x86_64 x86_64 GNU/Linux

• my cpu info: i7-12700

[#3#wangx@wangxiang:~ $ cat /proc/cpuinfo  | head -n 30
processor       : 0
vendor_id       : GenuineIntel
cpu family      : 6
model           : 151
model name      : 12th Gen Intel(R) Core(TM) i7-12700
stepping        : 2
microcode       : 0xffffffff
cpu MHz         : 2111.998
cache size      : 25600 KB
physical id     : 0
siblings        : 20
core id         : 0
cpu cores       : 10
apicid          : 0
initial apicid  : 0
fpu             : yes
fpu_exception   : yes
cpuid level     : 28
wp              : yes
flags           : fpu vme de pse tsc msr pae mce cx8 apic sep mtrr pge mca cmov pat pse36 clflush mmx fxsr sse sse2 ss ht syscall nx pdpe1gb rdtscp lm constant_tsc rep_good nopl xtopology tsc_reliable nonstop_tsc cpuid tsc_known_freq pni pclmulqdq vmx ssse3 fma cx16 pcid sse4_1 sse4_2 x2apic movbe popcnt tsc_deadline_timer aes xsave avx f16c rdrand hypervisor lahf_lm abm 3dnowprefetch ssbd ibrs ibpb stibp ibrs_enhanced tpr_shadow ept vpid ept_ad fsgsbase tsc_adjust bmi1 avx2 smep bmi2 erms invpcid rdseed adx smap clflushopt clwb sha_ni xsaveopt xsavec xgetbv1 xsaves avx_vnni vnmi umip waitpkg gfni vaes vpclmulqdq rdpid movdiri movdir64b fsrm md_clear serialize flush_l1d arch_capabilities
vmx flags       : vnmi invvpid ept_x_only ept_ad ept_1gb tsc_offset vtpr ept vpid unrestricted_guest ept_mode_based_exec tsc_scaling usr_wait_pause
bugs            : spectre_v1 spectre_v2 spec_store_bypass swapgs retbleed eibrs_pbrsb rfds bhi
bogomips        : 4223.99
clflush size    : 64
cache_alignment : 64
address sizes   : 46 bits physical, 48 bits virtual
power management: