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From: Ladislav Michl <ladis@linux-mips.org>
To: ptxdist@pengutronix.de
Subject: Re: [ptxdist] [RFC/PATCH 0/3] cryptodev
Date: Tue, 11 Jul 2017 10:56:11 +0200	[thread overview]
Message-ID: <20170711085611.odja32mcot7q6uxm@lenoch> (raw)
In-Reply-To: <20170702203030.GB26018@archie.localdomain>

On Sun, Jul 02, 2017 at 10:30:30PM +0200, Clemens Gruber wrote:
> I am wondering about the performance improvements when using the
> cryptodev openssl engine. There must be some cost for the context
> switches, but this is probably outweighed by the offloading.
> Did you for example run openssl speed aes-128-cbc before and after?
> And on what platform did you try it?

The cost of the context switches is notable only for small payloads,
bigger payload makes hw acceleration more usefull. Bellow is openssl
speed test result as run on IGEPv2 board with DM3730 (OMAP3630) -
second line is using cryptodev engine
(omap-aes 480c5000.aes: OMAP AES hw accel rev: 2.6):
The 'numbers' are in 1000s of bytes per second processed.
type             16 bytes     64 bytes     256 bytes   1024 bytes   8192 bytes
aes-128-cbc      25210.41k    32946.13k    35359.47k    36149.68k    36203.09k
aes-128-cbc       8821.87k    55293.26k    34594.13k   308582.40k         infk

	ladis

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      parent reply	other threads:[~2017-07-11  8:56 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-24 13:47 Ladislav Michl
2017-06-24 13:48 ` [ptxdist] [PATCH 1/3] cryptodev: new package Ladislav Michl
2017-06-24 13:49 ` [ptxdist] [PATCH 2/3] openssl: add cryptodev support Ladislav Michl
2017-06-24 13:49 ` [ptxdist] [PATCH 3/3] gnutls: " Ladislav Michl
2017-06-30 14:36 ` [ptxdist] [RFC/PATCH 0/3] cryptodev Michael Olbrich
2017-06-30 19:25   ` Ladislav Michl
2017-07-02 20:30     ` Clemens Gruber
2017-07-02 22:03       ` Alexander Dahl
2017-07-03  6:56         ` Robert Schwebel
2017-07-03  7:29           ` Alexander Dahl
2017-07-10 14:11           ` Ladislav Michl
2017-07-17  8:56             ` Michael Olbrich
2017-07-11  8:56       ` Ladislav Michl [this message]

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