= cryptsetup-benchmark(8)
:doctype: manpage
:manmanual: Maintenance Commands
:mansource: cryptsetup {release-version}
:man-linkstyle: pass:[blue R < >]
:COMMON_OPTIONS:
:ACTION_BENCHMARK:

== Name

cryptsetup-benchmark - benchmarks ciphers and KDF

== SYNOPSIS

*cryptsetup _benchmark_ [<options>]*

== DESCRIPTION

Benchmarks ciphers and KDF (key derivation function). Without
parameters, it tries to measure few common configurations.

To benchmark other ciphers or modes, you need to specify *--cipher* and
*--key-size* options.

To benchmark PBKDF you need to specify *--pbkdf* or *--hash* with optional
cost parameters *--iter-time*, *--pbkdf-memory* or *--pbkdf-parallel*.

*NOTE:* This benchmark uses memory only and is only informative. You
cannot directly predict real storage encryption speed from it.

For testing block ciphers, this benchmark requires kernel userspace
crypto API to be available (introduced in Linux kernel 2.6.38). If you
are configuring kernel yourself, enable "User-space interface for
symmetric key cipher algorithms" in "Cryptographic API" section
(CRYPTO_USER_API_SKCIPHER .config option).

*<options>* can be [--cipher, --key-size, --hash, --pbkdf, --iter-time,
--pbkdf-memory, --pbkdf-parallel].

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