Problem with http2 huge load average

[Valentin V. Bartenev]

On Wednesday 04 November 2015 05:08:49 hristoc wrote:
> Hello,
> 
> Im using nginx:
> 
> nginx version: nginx/1.9.6
> built with OpenSSL 1.0.1p 9 Jul 2015
> TLS SNI support enabled
> configure arguments: --prefix=/usr --sbin-path=/usr/sbin/nginx
> --conf-path=/etc/nginx/nginx.conf --pid-path=/var/run/nginx.pid
> --lock-path=/var/lock/nginx --user=nobody --group=nogroup
> --error-log-path=/var/log/nginx/error.log
> --http-log-path=/var/log/nginx/access.log --with-ipv6 --with-threads
> --with-select_module --with-poll_module --with-http_ssl_module
> --with-http_realip_module --with-http_addition_module
> --with-http_xslt_module --with-http_sub_module --with-http_dav_module
> --with-http_flv_module --with-http_mp4_module --with-http_gunzip_module
> --with-http_v2_module --with-http_gzip_static_module
> --with-http_random_index_module --with-http_secure_link_module
> --with-http_stub_status_module --with-http_geoip_module
> --with-http_auth_request_module --with-http_perl_module
> --with-perl_modules_path=
> --http-client-body-temp-path=/var/tmp/nginx_client_body_temp
> --http-proxy-temp-path=/var/tmp/nginx_proxy_temp
> --http-fastcgi-temp-path=/dev/shm --with-http_realip_module
> --without-mail_pop3_module --without-mail_imap_module
> --without-mail_smtp_module
> 
> 
> on Slackware 14- current :
> Linux 123 4.1.12 #2 SMP Wed Oct 28 14:19:14 CDT 2015 x86_64 Intel(R) Xeon(R)
> CPU           E5420  @ 2.50GHz GenuineIntel GNU/Linux
> 
> 
> I use it wtih php: PHP 5.6.15 (cli) (built: Nov  2 2015 09:35:45) as php-fpm
> with 32 threads.
> 
> When I start nginx with http2 enabled on port 443:
> server {
>     listen       443 ssl http2;
> 
> , after a minute my load average jump to 32.50. When I switch off http2 load
> averege after a few seconds drop to 0.30.
> 
> This probably is a bug but any solution? I can give more info if is needed.
> 

Is it nginx who eats your cpu, or php?

  wbr, Valentin V. Bartenev