From 891b43db32ad7b21bc9e37f42751cb6fc85a3a73 Mon Sep 17 00:00:00 2001 From: Valentin Bartenev Date: Fri, 10 Feb 2012 11:24:19 +0000 Subject: Added ngx_ncpu detection for most *nix platforms. This inaccurate detection by using sysconf(_SC_NPROCESSORS_ONLN) can improve usage of the mutex lock optimization on multicore systems. --- src/os/unix/ngx_posix_init.c | 6 ++++++ 1 file changed, 6 insertions(+) (limited to 'src/os/unix/ngx_posix_init.c') diff --git a/src/os/unix/ngx_posix_init.c b/src/os/unix/ngx_posix_init.c index 02642bd7c..eea65a903 100644 --- a/src/os/unix/ngx_posix_init.c +++ b/src/os/unix/ngx_posix_init.c @@ -47,7 +47,13 @@ ngx_os_init(ngx_log_t *log) for (n = ngx_pagesize; n >>= 1; ngx_pagesize_shift++) { /* void */ } +#if (NGX_HAVE_SC_NPROCESSORS_ONLN) if (ngx_ncpu == 0) { + ngx_ncpu = sysconf(_SC_NPROCESSORS_ONLN); + } +#endif + + if (ngx_ncpu < 1) { ngx_ncpu = 1; } -- cgit v1.2.3