id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc	uname	nginx_version
456	ngx_random: random number generator initialized (srandom) to same value for all processes	Thomas Lochmatter		"In src/os/unix/ngx_posix_init.c, the line
  `srandom(ngx_time());`
is used to initialize the PRNG. Since all worker processes are started at roughly the same time, ngx_time() is very likely to return the same value. Hence, the processes are likely to use the same initial PRNG value, and therefore produce the same random sequence.

Suggestion:
  `srandom((ngx_getpid() << 16) ^ ngx_time());`
to combine the process ID and the time."	enhancement	closed	minor		nginx-core	1.3.x	fixed	ngx_random, random number generator, random, srandom, rng, prng		Linux croppola 3.2.45-xenU-7899-x86_64 #6 SMP Tue May 21 12:39:46 UTC 2013 x86_64 GNU/Linux	"nginx version: nginx/1.5.7
built by gcc 4.7.2 (Debian 4.7.2-5) 
TLS SNI support enabled
configure arguments: --with-http_stub_status_module --with-http_ssl_module --with-http_spdy_module --add-module=/path/to/croppola/module"