Login Register

read_ahead

Syntax:	`read_ahead size;`
Default:	`read_ahead 0;`
Context:	`http`, `server`, `location`

Sets the amount of pre-reading for the kernel when working with file.

On Linux, the posix_fadvise(0, 0, 0, POSIX_FADV_SEQUENTIAL) system call is used, and so the size parameter is ignored.

On FreeBSD, the fcntl(O_READAHEAD, size) system call, supported since FreeBSD 9.0-CURRENT, is used. FreeBSD 7 has to be patched.

Links:

https://nginx.org/en/docs/http/ngx_http_core_module.html#read_ahead

doc_nginx

2017-02-09 07:08:41

Comments

Leave a Comment

Please login to continue.

Popular Articles

Ahead-of-Time Compilation Learn how to use Ahead-of-time compilation This cookbook describes how to radically improve performance by compiling Ahead of Time (AoT) during a bui

Write-Ahead Logging (WAL) Write-Ahead Logging (WAL) is a standard method for ensuring data integrity. A detailed description can be found in most (if not all) books about tran

Server Configuration: Write Ahead Log For additional information on tuning these settings, see Section 30.4. 19.5.1. Settings wal_level (enum) wal_level determines how much informatio

read read(path, *options) Class Public methods Use to slurp a CSV file into an Array of Arrays. Pass the path to the file and any options ::

read read(object, attribute, key) Class Public methods