From: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
To: Peter Chen <peter.chen@freescale.com>
Cc: mark.rutland@arm.com, devicetree@vger.kernel.org,
pawel.moll@arm.com, linux-usb@vger.kernel.org,
robh+dt@kernel.org, kernel@pengutronix.de, shawn.guo@linaro.org,
linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH 00/12] USB: chipidea: patchset for performance improvement
Date: Thu, 19 Mar 2015 11:36:29 +0100 [thread overview]
Message-ID: <20150319103629.GI14457@ns203013.ovh.net> (raw)
In-Reply-To: <1426727963-32280-1-git-send-email-peter.chen@freescale.com>
On 09:19 Thu 19 Mar , Peter Chen wrote:
> Hi all,
>
> In this patch set, I add some interfaces for tuning the performance
> of chipidea usb driver. With this set, the USB performance can be improved
> at some user cases with suitable parameters. The main changes:
>
> - Interface to tune interrupt threshold control, and set
> 'Immediate' for default value
> - The glue layer can disable stream mode according to USB role
> - Interface to tune AHB burst configuration at SBUSCFG
> - Interface to tune tx/rx burst size
> - i.mx changes for achieving better performance, it can reduce
> the latecy between bus and USB FIFO, and reduce the overrun
> and underrun occurrences, it is useful for the system bus is busy.
> we see great improvement for ISO transfer, eg, high resolution
> USB camera when the bus is busy.
>
> Below are some test results at imx6sx sdb board
> (set ehci_hcd.park=3 at bootargs), the tests are done
> at v4.0 kernel, no other bus loading during the tests,
> so we have not seen performance change for some use cases.
>
> USB Mass Storage (Host mode)
> With Patch Set Without Patch Set
> R: 26.9 MB/s 27 MB/s
> W: 25.2 MB/s 24.5 MB/s
>
> 1G USB Ethernet Card
> With Patch Set Without Patch Set
> TX: 186 Mb/s 185 Mb/s
> RX: 219 Mb/s 216 Mb/s
>
> g_ncm (Device Mode)
> With Patch Set Without Patch Set
> TX: 166MB/s 163MB/s
> RX: 230MB/s 184MB/s
The improve is not drag sticks except for gcm RX
The most interesting path will be on full system loaded
can you test it and provide data?
Best Regards,
J.
next prev parent reply other threads:[~2015-03-19 10:36 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-03-19 1:19 [PATCH 00/12] USB: chipidea: patchset for performance improvement Peter Chen
2015-03-19 10:36 ` Jean-Christophe PLAGNIOL-VILLARD [this message]
[not found] ` <20150319103629.GI14457-HVbc7XotTAhnXn40ka+A6Q@public.gmane.org>
2015-03-20 2:33 ` Peter Chen
[not found] ` <1426727963-32280-1-git-send-email-peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2015-03-19 1:19 ` [PATCH 01/12] Doc: usb: ci-hdrc-imx: add gadget-itc-setting for binding doc Peter Chen
2015-03-19 1:19 ` [PATCH 02/12] usb: chipidea: set ITC to 0 for device mode Peter Chen
2015-03-19 1:19 ` [PATCH 03/12] usb: chipidea: define stream mode disable for both roles Peter Chen
2015-03-19 1:19 ` [PATCH 04/12] usb: chipidea: imx: add stream mode enable for device mode at imx6sl/imx6sx Peter Chen
2015-03-19 1:19 ` [PATCH 05/12] usb: chipidea: introduce ci_platform_config Peter Chen
[not found] ` <1426727963-32280-6-git-send-email-peter.chen-KZfg59tc24xl57MIdRCFDg@public.gmane.org>
2015-03-19 10:19 ` Michael Grzeschik
[not found] ` <20150319101929.GC9894-bIcnvbaLZ9MEGnE8C9+IrQ@public.gmane.org>
2015-03-20 2:36 ` Peter Chen
2015-03-19 1:19 ` [PATCH 06/12] Doc: usb: ci-hdrc-imx: add ahb-burst-config for binding doc Peter Chen
2015-03-19 1:19 ` [PATCH 07/12] ARM: imx6: set ahb-burst-config as 0 for USB Peter Chen
2015-03-19 1:19 ` [PATCH 08/12] usb: chipidea: add ahb burst configuration Peter Chen
2015-03-19 1:19 ` [PATCH 09/12] usb: chipidea: usbmisc_imx: add unburst setting for imx6 Peter Chen
2015-03-19 1:19 ` [PATCH 10/12] Doc: usb: ci-hdrc-imx: add tx(rx)-burst-config-dword for binding doc Peter Chen
2015-03-19 1:19 ` [PATCH 11/12] ARM: imx6: change default burst size for USB Peter Chen
2015-03-19 1:19 ` [PATCH 12/12] usb: chipidea: add burst size configuration interface Peter Chen
2015-03-24 10:32 ` [PATCH 00/12] USB: chipidea: patchset for performance improvement victorascroft-Re5JQEeQqe8AvxtiuMwx3w
2015-03-24 12:21 ` Peter Chen
2015-03-26 8:34 ` victorascroft-Re5JQEeQqe8AvxtiuMwx3w
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20150319103629.GI14457@ns203013.ovh.net \
--to=plagnioj@jcrosoft.com \
--cc=devicetree@vger.kernel.org \
--cc=kernel@pengutronix.de \
--cc=linux-arm-kernel@lists.infradead.org \
--cc=linux-usb@vger.kernel.org \
--cc=mark.rutland@arm.com \
--cc=pawel.moll@arm.com \
--cc=peter.chen@freescale.com \
--cc=robh+dt@kernel.org \
--cc=shawn.guo@linaro.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).