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Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff
From: |
Paolo Bonzini |
Subject: |
Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff |
Date: |
Wed, 24 Jul 2013 13:28:23 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 |
Il 24/07/2013 10:37, Alex Bligh ha scritto:
>
>
> --On 24 July 2013 09:01:22 +0100 Alex Bligh <address@hidden> wrote:
>
>>>> Most 'reasonable' POSIX compliant operating systems have ppoll
>>>
>>> Really? I could find no manpages for any of Solaris and *BSD.
>>
>> OK I shall (re)research that then! I suppose select() / pselect() is
>> an alternative when there are few FDs.
>
> Looks like I was wrong. However, pselect support is pretty wide.
Yes, on the other hand we only recently switched from select() to poll().
I guess using ms resolution wouldn't be too bad for non-Linux. After
all before dynticks support was added to the alarm timer, it used to use
/dev/rtc or /dev/hpet -- which is very precise but only has ms
resolution too.
We might not care about the slack either, in practice. TCG timing sucks
anyway, and for KVM/Xen most relevant device models are in the kernel.
Paolo
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, (continued)
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, liu ping fan, 2013/07/22
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, liu ping fan, 2013/07/22
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Paolo Bonzini, 2013/07/23
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, liu ping fan, 2013/07/23
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Paolo Bonzini, 2013/07/24
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Alex Bligh, 2013/07/24
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Paolo Bonzini, 2013/07/24
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Alex Bligh, 2013/07/24
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Paolo Bonzini, 2013/07/24
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Alex Bligh, 2013/07/24
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff,
Paolo Bonzini <=
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, liu ping fan, 2013/07/24
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, liu ping fan, 2013/07/24
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Paolo Bonzini, 2013/07/24
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Alex Bligh, 2013/07/24
- [Qemu-devel] [PATCHv2a] [RFC 8/7 (really)] Add prctl(PR_SET_TIMERSLACK, 1, ...) to reduce timer slack, Alex Bligh, 2013/07/24
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Alex Bligh, 2013/07/23
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Stefan Hajnoczi, 2013/07/25
Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Stefan Hajnoczi, 2013/07/25