|  | =pod | 
|  |  | 
|  | =head1 NAME | 
|  |  | 
|  | speed - test library performance | 
|  |  | 
|  | =head1 SYNOPSIS | 
|  |  | 
|  | B<openssl speed> | 
|  | [B<-help>] | 
|  | [B<-engine id>] | 
|  | [B<-elapsed>] | 
|  | [B<-evp algo>] | 
|  | [B<-decrypt>] | 
|  | [B<algorithm...>] | 
|  |  | 
|  | =head1 DESCRIPTION | 
|  |  | 
|  | This command is used to test the performance of cryptographic algorithms. | 
|  | To see the list of supported algorithms, use the I<list --digest-commands> | 
|  | or I<list --cipher-commands> command. | 
|  |  | 
|  | =head1 OPTIONS | 
|  |  | 
|  | =over 4 | 
|  |  | 
|  | =item B<-help> | 
|  |  | 
|  | Print out a usage message. | 
|  |  | 
|  | =item B<-engine id> | 
|  |  | 
|  | specifying an engine (by its unique B<id> string) will cause B<speed> | 
|  | to attempt to obtain a functional reference to the specified engine, | 
|  | thus initialising it if needed. The engine will then be set as the default | 
|  | for all available algorithms. | 
|  |  | 
|  | =item B<-elapsed> | 
|  |  | 
|  | Measure time in real time instead of CPU time. It can be useful when testing | 
|  | speed of hardware engines. | 
|  |  | 
|  | =item B<-evp algo> | 
|  |  | 
|  | Use the specified cipher or message digest algorithm via the EVP interface. | 
|  |  | 
|  | =item B<-decrypt> | 
|  |  | 
|  | Time the decryption instead of encryption. Affects only the EVP testing. | 
|  |  | 
|  | =item B<[zero or more test algorithms]> | 
|  |  | 
|  | If any options are given, B<speed> tests those algorithms, otherwise all of | 
|  | the above are tested. | 
|  |  | 
|  | =back | 
|  |  | 
|  | =head1 COPYRIGHT | 
|  |  | 
|  | Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved. | 
|  |  | 
|  | Licensed under the OpenSSL license (the "License").  You may not use | 
|  | this file except in compliance with the License.  You can obtain a copy | 
|  | in the file LICENSE in the source distribution or at | 
|  | L<https://www.openssl.org/source/license.html>. | 
|  |  | 
|  | =cut |