From: Gerd Hoffmann <kraxel@redhat.com>
To: Luiz Capitulino <lcapitulino@redhat.com>
Cc: mdroth@linux.vnet.ibm.com, mlureau@redhat.com,
Alon Levy <alevy@redhat.com>,
armbru@redhat.com, qemu-devel@nongnu.org
Subject: Re: [Qemu-devel] [PATCH 1/5] monitor: screen_dump async
Date: Tue, 25 Oct 2011 09:16:59 +0200 [thread overview]
Message-ID: <4EA6626B.8000602@redhat.com> (raw)
In-Reply-To: <20111024134516.57596735@doriath>
Hi,
> If all you need here is to delay sending the response, then maybe the
> current interface could work (although I honestly don't trust it and
> regret not having dropped it). Otherwise our only choice would be to
> work on getting the QAPI async support merged.
A delayed monitor response is all we need.
The command may take a bit to finish, where "a bit" is in the order of a
few seconds max, usually less than a second. Blocking the monitor for
that amount of time is fine, but blocking the io thread introduces
insane long I/O latencies for the guest (and device emulation).
cheers,
Gerd
next prev parent reply other threads:[~2011-10-25 7:17 UTC|newest]
Thread overview: 20+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-10-24 12:02 [Qemu-devel] [PATCH 0/5] monitor+qxl: async monitor support Alon Levy
2011-10-24 12:02 ` [Qemu-devel] [PATCH 1/5] monitor: screen_dump async Alon Levy
2011-10-24 15:13 ` Gerd Hoffmann
2011-10-24 15:45 ` Luiz Capitulino
2011-10-24 17:29 ` Alon Levy
2011-10-25 0:31 ` Luiz Capitulino
2011-10-25 10:13 ` Alon Levy
2011-10-25 12:51 ` Luiz Capitulino
2011-10-25 13:21 ` Alon Levy
2011-10-25 18:41 ` Luiz Capitulino
2011-10-26 11:48 ` Alon Levy
2011-10-25 7:16 ` Gerd Hoffmann [this message]
2011-10-24 12:02 ` [Qemu-devel] [PATCH 2/5] qxl: s/__FUNCTION__/__func__/, change logging levels Alon Levy
2011-10-24 12:02 ` [Qemu-devel] [PATCH 3/5] qxl: support concurrent async commands Alon Levy
2011-10-24 15:26 ` Gerd Hoffmann
2011-10-25 12:19 ` Alon Levy
2011-10-24 12:02 ` [Qemu-devel] [PATCH 4/5] qxl: split qxl_render_display_resized Alon Levy
2011-10-24 12:02 ` [Qemu-devel] [PATCH 5/5] qxl: support async monitor screen dump Alon Levy
2011-10-24 15:29 ` Gerd Hoffmann
2011-10-24 17:30 ` Alon Levy
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