From: "Gustavo F. Padovan" <padovan@profusion.mobi>
To: Mat Martineau <mathewm@codeaurora.org>
Cc: linux-bluetooth@vger.kernel.org
Subject: Re: [PATCH 3/4] Bluetooth: Limit depth of the HCI TX queue with ERTM mode
Date: Wed, 8 Jun 2011 23:16:48 -0300 [thread overview]
Message-ID: <20110609021648.GA2776@joana> (raw)
In-Reply-To: <1307143270-2655-3-git-send-email-mathewm@codeaurora.org>
Hi Mat,
* Mat Martineau <mathewm@codeaurora.org> [2011-06-03 16:21:09 -0700]:
> In order to provide timely responses to REJ, SREJ, and poll input from
> the remote device, it helps to reduce the number of ERTM data frames
> in the HCI TX queue at one time. If a full TX window of data is in the
> HCI TX queue, any responses to REJ, SREJ, or polls must wait in line
> behind all previously queued data. This latency leads to disconnects,
> and will be more severe with extended window sizes.
I prefer if we go with a hci_send_acl_prio() implementation. It will have much
less overhead using a workqueue. As it will be filled only by S-frames with a
few bytes each I don't think we will have problems. So lets go with this
approach and see what we can get.
Gustavo
next prev parent reply other threads:[~2011-06-09 2:16 UTC|newest]
Thread overview: 19+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-06-03 23:21 [PATCH 1/4] Bluetooth: Restore accidentally-deleted line Mat Martineau
2011-06-03 23:21 ` [PATCH 2/4] Bluetooth: Rename _busy_wq to _l2cap_wq Mat Martineau
2011-06-06 17:31 ` Gustavo F. Padovan
2011-06-08 23:24 ` Mat Martineau
2011-06-09 18:47 ` Gustavo F. Padovan
2011-06-09 23:09 ` Mat Martineau
2011-06-15 0:04 ` Gustavo F. Padovan
2011-06-16 21:48 ` Mat Martineau
2011-06-20 19:23 ` Gustavo F. Padovan
2011-06-24 22:31 ` Gustavo F. Padovan
2011-06-03 23:21 ` [PATCH 3/4] Bluetooth: Limit depth of the HCI TX queue with ERTM mode Mat Martineau
2011-06-09 2:16 ` Gustavo F. Padovan [this message]
2011-06-09 23:36 ` Mat Martineau
2011-06-14 23:31 ` Mat Martineau
2011-06-14 23:53 ` Gustavo F. Padovan
2011-06-16 22:38 ` Mat Martineau
2011-06-03 23:21 ` [PATCH 4/4] Bluetooth: Fix check for the ERTM local busy state Mat Martineau
2011-06-06 17:38 ` Gustavo F. Padovan
2011-06-06 17:37 ` [PATCH 1/4] Bluetooth: Restore accidentally-deleted line Gustavo F. Padovan
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=20110609021648.GA2776@joana \
--to=padovan@profusion.mobi \
--cc=linux-bluetooth@vger.kernel.org \
--cc=mathewm@codeaurora.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).