id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
1636	CPU 100% with njs on simple base64 decode (2.3.1)	131@…		"I'm using a simple js_set to base64 decode (via String.bytesFrom)
as proxy_pass destination, and CPU goes too high (100%) under heavy load.


I can reproduce this using  ab -c 200 -n 10000 

ab -c 200 -n 10000 ""http://127.0.0.1/ping""
=> 0% CPU, all good

ab -c 200 -n 10000 ""http://127.0.0.1/proxy/string
=> 35% CPU, all good

ab -c 200 -n 10000 ""http://127.0.0.1/proxy/js_set
=> 100%CPU, no good.

I'm guessing the resolver also use CPU cycle, but i'm unhappy with current performances, is there something i can tweak ?

(switching to worker_processes auto helped a bit, but 'im still looking for something faster)


Thank you for your kind help

{{{
js_include ""./conf.d/njs/x_proxypass.js"";
js_set $x_proxypass x_proxypass;


server {
    listen       80 default_server;

    gzip off;

    location /ping {
      return 200 ""pong"";
    }

    location /proxy/string {
      aio threads;
      proxy_buffering off;
      proxy_pass 'https://131.github.io/ping';

    }

    location /proxy/js_set {
      aio threads;
      proxy_buffering off;
      proxy_pass $x_proxypass;
    }
   access_log  /dev/null;
}



}}}


{{{
function x_proxypass(r) {
  var src = 'aHR0cHM6Ly8xMzEuZ2l0aHViLmlvL3Bpbmc=';
  return String.bytesFrom(src, 'base64');
}
}}}




"	defect	closed	minor		nginx-module	1.14.x	invalid	njs, performance		Linux 3.16.0-6-amd64 #1 SMP Debian 3.16.57-2 (2018-07-14) x86_64 GNU/Linux	"nginx version: nginx/1.14.0
built by gcc 4.9.2 (Debian 4.9.2-10+deb8u1)
built with OpenSSL 1.0.1t  3 May 2016
TLS SNI support enabled
configure arguments: --prefix=/etc/nginx --sbin-path=/usr/sbin/nginx --modules-path=/usr/lib/nginx/modules --conf-path=/etc/nginx/nginx.conf --error-log-path=/var/log/nginx/error.log --http-log-path=/var/log/nginx/access.log --pid-path=/var/run/nginx.pid --lock-path=/var/run/nginx.lock --http-client-body-temp-path=/var/cache/nginx/client_temp --http-proxy-temp-path=/var/cache/nginx/proxy_temp --http-fastcgi-temp-path=/var/cache/nginx/fastcgi_temp --http-uwsgi-temp-path=/var/cache/nginx/uwsgi_temp --http-scgi-temp-path=/var/cache/nginx/scgi_temp --user=nginx --group=nginx --with-compat --with-file-aio --with-threads --with-http_addition_module --with-http_auth_request_module --with-http_dav_module --with-http_flv_module --with-http_gunzip_module --with-http_gzip_static_module --with-http_mp4_module --with-http_random_index_module --with-http_realip_module --with-http_secure_link_module --with-http_slice_module --with-http_ssl_module --with-http_stub_status_module --with-http_sub_module --with-http_v2_module --with-mail --with-mail_ssl_module --with-stream --with-stream_realip_module --with-stream_ssl_module --with-stream_ssl_preread_module --with-cc-opt='-g -O2 -fstack-protector-strong -Wformat -Werror=format-security -Wp,-D_FORTIFY_SOURCE=2 -fPIC' --with-ld-opt='-Wl,-z,relro -Wl,-z,now -Wl,--as-needed -pie'
"