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From: Avi Kivity <avi@qumranet.com>
To: Anders <mail@flac.kalibalik.dk>
Cc: kvm-devel@lists.sourceforge.net, Marcelo Tosatti <mtosatti@redhat.com>
Subject: Re: [patch 2/2] QEMU: decrease console "refresh rate" with -nographic
Date: Tue, 15 Apr 2008 12:27:53 +0300	[thread overview]
Message-ID: <48047519.9080007@qumranet.com> (raw)
In-Reply-To: <35388.bFoQE3daRhY=.1208244417.squirrel@webmail.hotelhot.dk>

Anders wrote:
>
>>> Why not enable SIGIO on stdio input, like the rest of the fd handling in
>>> qemu?
>>>       
>> Thats a possibility, but I think we've now agreed that doing select() with
>> a timeout is cleaner and possibly half a cent faster.
>>     
>
> Since I can only follow this list as a hobby, I managed to miss that
> discussion. Can somebody point me to the relevant thread, as I would find
> it interesting?
>
>   

This was off-list.  The point is, that with the iothread we don't need 
to rely on signals at all (qemu needs signals to break out of the 
emulation loop, kvm without iothread needs them to exit guest mode, but 
the iothread can simply sit in select() waiting for an fd to become 
active (or for aio to complete via a signal).

-- 
error compiling committee.c: too many arguments to function


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  reply	other threads:[~2008-04-15  9:27 UTC|newest]

Thread overview: 33+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-04-11 18:38 [patch 0/2] SIGIO handling changes Marcelo Tosatti
2008-04-11 18:38 ` [patch 1/2] QEMU: use SIGARLM for alarm timers, enable SIGIO on qemu_set_fd_handler2() Marcelo Tosatti
2008-04-11 18:59   ` Anthony Liguori
2008-04-11 19:44     ` Marcelo Tosatti
2008-04-13 15:05       ` Avi Kivity
2008-04-11 19:51     ` Marcelo Tosatti
2008-04-11 18:38 ` [patch 2/2] QEMU: decrease console "refresh rate" with -nographic Marcelo Tosatti
2008-04-13 16:30   ` Anders
2008-04-14 15:02     ` Marcelo Tosatti
2008-04-14 16:24       ` Avi Kivity
2008-04-14 17:24         ` Marcelo Tosatti
2008-04-14 18:31           ` Anthony Liguori
2008-04-15  5:39             ` Avi Kivity
2008-04-15  5:43               ` Carsten Otte
2008-04-15 13:40               ` Anthony Liguori
2008-04-15 13:47                 ` Avi Kivity
2008-04-15 15:12                 ` Marcelo Tosatti
2008-04-15  5:40           ` Avi Kivity
2008-04-15  7:26           ` Anders
2008-04-15  9:27             ` Avi Kivity [this message]
2008-04-15 14:20               ` Anthony Liguori
2008-04-15 14:45                 ` Avi Kivity
2008-04-15 15:04                   ` Marcelo Tosatti
2008-04-15 15:34                     ` Anthony Liguori
2008-04-15 15:43                       ` Avi Kivity
2008-04-15 18:14                         ` Anthony Liguori
2008-04-16  8:37                           ` Avi Kivity
2008-04-16 10:26                             ` Anders
2008-04-16 11:23                               ` Avi Kivity
2008-04-16 13:53                             ` Anthony Liguori
2008-04-16 14:24                               ` Carsten Otte
2008-04-17 12:53                                 ` Avi Kivity
2008-04-17  9:37                               ` Avi Kivity

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