nginx hogs cpu on Windows

[Igal @ Lucee.org]

Hello,

I've noticed a few times already that after running for some time nginx 
hogs a CPU thread.  The machine has 8 CPU threads, so when the problem 
happens I see in Task Manager that nginx takes 12% or 13% (consistent 
with a full 1/8 of CPU power).

Issuing a reload fixes the problem temporarily.

c:\>nginx.exe -V
nginx version: nginx/1.13.1
built by cl 16.00.40219.01 for 80x86
built with OpenSSL 1.0.2l  25 May 2017
TLS SNI support enabled
configure arguments: --with-cc=cl --builddir=objs.msvc8 --with-debug 
--prefix= --conf-path=conf/nginx.conf --pid-path=logs/nginx.pid 
--http-log-path=logs/access.log --error-log-path=logs/error.log 
--sbin-path=nginx.exe --http-client-body-temp-path=temp/client_body_temp 
--http-proxy-temp-path=temp/proxy_temp 
--http-fastcgi-temp-path=temp/fastcgi_temp 
--http-scgi-temp-path=temp/scgi_temp 
--http-uwsgi-temp-path=temp/uwsgi_temp --with-cc-opt=-DFD_SETSIZE=1024 
--with-pcre=objs.msvc8/lib/pcre-8.40 
--with-zlib=objs.msvc8/lib/zlib-1.2.11 --with-select_module 
--with-http_v2_module --with-http_realip_module 
--with-http_addition_module --with-http_sub_module 
--with-http_dav_module --with-http_stub_status_module 
--with-http_flv_module --with-http_mp4_module --with-http_gunzip_module 
--with-http_gzip_static_module --with-http_auth_request_module 
--with-http_random_index_module --with-http_secure_link_module 
--with-http_slice_module --with-mail --with-stream 
--with-openssl=objs.msvc8/lib/openssl-1.0.2l --with-openssl-opt=no-asm 
--with-http_ssl_module --with-mail_ssl_module --with-stream_ssl_module

Task Manager Performance when problem takes place:

Task Manager Processes when problem takes place:

Task Manager Performance after issuing reload:

Looks like there is a bug somewhere.  I wonder if it is limited to 
Windows or if it's on all distributions.

Thank you,


Igal Sapir
Lucee Core Developer
Lucee.org <http://lucee.org/>

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