From: Gerd Hoffmann <kraxel@redhat.com>
To: Hans de Goede <hdegoede@redhat.com>
Cc: qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] usb: Move interrupt handling from poll to async handling
Date: Tue, 06 Nov 2012 23:05:55 +0100 [thread overview]
Message-ID: <509989C3.9070402@redhat.com> (raw)
In-Reply-To: <1352210901-1923-1-git-send-email-hdegoede@redhat.com>
On 11/06/12 15:08, Hans de Goede wrote:
> This patchsets move interrupt handling for usb-redir and usb-hid devices
> over from polling to async handling. Together with a patch to allow
> async stepdown in ehci when the periodic schedule only contains interrupt
> queues, and a patch to allow usb-hid devices to connect to ehci, this
> fixes the usb-tablet causing a crazy cpu load for idle guests.
>
> With this patchset the cpuload for a fully idle vm with usb-tablet
> is lowered from 20% to 2-3% (on my laptop).
Not looked at it (yet) in detail, just merged quickly into a test
branch, then found it blowing up in an assert with a win7 guest when
moving the mouse for the first time after boot. So something is fishy
in the hid patches I guess ...
cheers,
Gerd
prev parent reply other threads:[~2012-11-06 22:06 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-11-06 14:08 [Qemu-devel] usb: Move interrupt handling from poll to async handling Hans de Goede
2012-11-06 14:08 ` [Qemu-devel] [PATCH 1/8] usb-redir: Split usb_handle_interrupt_data into separate in/out functions Hans de Goede
2012-11-06 14:08 ` [Qemu-devel] [PATCH 2/8] usb-redir: Store interrupt receiving status in the bufp-queue Hans de Goede
2012-11-07 9:51 ` Paolo Bonzini
2012-11-06 14:08 ` [Qemu-devel] [PATCH 3/8] usb-redir: Only add actually in flight packets to the in flight queue Hans de Goede
2012-11-06 14:08 ` [Qemu-devel] [PATCH 4/8] usb-redir: Handle interrupt packets async Hans de Goede
2012-11-06 14:08 ` [Qemu-devel] [PATCH 5/8] ehci: Lower timer freq when there are no iso packets in the periodic schedule Hans de Goede
2012-11-06 14:08 ` [Qemu-devel] [PATCH 6/8] hid: Change idle handling to use a timer Hans de Goede
2012-11-06 14:08 ` [Qemu-devel] [PATCH 7/8] usb-hid: Move from NAK/polling to async packet handling Hans de Goede
2012-11-08 15:35 ` Gerd Hoffmann
2012-11-06 14:08 ` [Qemu-devel] [PATCH 8/8] usb-hid: Allow connecting to a USB-2 device Hans de Goede
2012-11-07 9:47 ` Paolo Bonzini
2012-11-08 15:36 ` Gerd Hoffmann
2012-11-12 11:19 ` Hans de Goede
2012-11-06 22:05 ` Gerd Hoffmann [this message]
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=509989C3.9070402@redhat.com \
--to=kraxel@redhat.com \
--cc=hdegoede@redhat.com \
--cc=qemu-devel@nongnu.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).