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diff src/core/ngx_open_file_cache.c @ 544:f7ec98e3caeb NGINX_0_8_18

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nginx 0.8.18 *) Feature: the "read_ahead" directive. *) Feature: now several "perl_modules" directive may be used. *) Feature: the "limit_req_log_level" and "limit_conn_log_level" directives. *) Bugfix: now "limit_req" directive conforms to the leaky bucket algorithm. Thanks to Maxim Dounin. *) Bugfix: nginx did not work on Linux/sparc. Thanks to Marcus Ramberg. *) Bugfix: nginx sent '\0' in a "Location" response header line on MKCOL request. Thanks to Xie Zhenye. *) Bugfix: zero status code was logged instead of 499 status code; the bug had appeared in 0.8.11. *) Bugfix: socket leak; the bug had appeared in 0.8.11.
author Igor Sysoev <http://sysoev.ru>
date Tue, 06 Oct 2009 00:00:00 +0400
parents 4c5d2c627a6c
children 566e105a89f1
line wrap: on
line diff
--- a/src/core/ngx_open_file_cache.c
+++ b/src/core/ngx_open_file_cache.c
@@ -17,6 +17,9 @@
  */
 
 
+#define NGX_MIN_READ_AHEAD  (128 * 1024)
+
+
 static void ngx_open_file_cache_cleanup(void *data);
 static ngx_int_t ngx_open_and_stat_file(u_char *name, ngx_open_file_info_t *of,
     ngx_log_t *log);
@@ -524,6 +527,13 @@ ngx_open_and_stat_file(u_char *name, ngx
     } else {
         of->fd = fd;
 
+        if (of->read_ahead && ngx_file_size(&fi) > NGX_MIN_READ_AHEAD) {
+            if (ngx_read_ahead(fd, of->read_ahead) == NGX_ERROR) {
+                ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,
+                              ngx_read_ahead_n " \"%s\" failed", name);
+            }
+        }
+
         if (of->directio <= ngx_file_size(&fi)) {
             if (ngx_directio_on(fd) == NGX_FILE_ERROR) {
                 ngx_log_error(NGX_LOG_ALERT, log, ngx_errno,