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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: |
Thu, 25 Jul 2013 14:35:32 +0200 |
User-agent: |
Mozilla/5.0 (X11; Linux x86_64; rv:17.0) Gecko/20130625 Thunderbird/17.0.7 |
Il 25/07/2013 14:32, Jan Kiszka ha scritto:
> On 2013-07-25 14:21, Alex Bligh wrote:
>>
>>
>> --On 25 July 2013 14:05:30 +0200 Stefan Hajnoczi <address@hidden>
>> wrote:
>>
>>> Alex Bligh's series gives each AioContext its own rt_clock. This avoids
>>> the need for synchronization in the simple case. If we require timer
>>> access between threads then we really need to synchronize.
>>>
>>> You pointed out in another email that vm_clock stops when the guest is
>>> paused. I think we can find a solution for I/O throttling and QED,
>>> which use vm_clock in the block layer. Note that block jobs already use
>>> rt_clock.
>>
>> I would happily at a QEMUClock of each type to AioContext. They are after
>> all pretty lightweight.
>
> What's the point of adding tones of QEMUClock instances? Considering
> proper abstraction, how are they different for each AioContext? Will
> they run against different clock sources, start/stop at different times?
> If the answer is "they have different timer list", then fix this
> incorrect abstraction.
s/QEMUClock/QEMUTimerList/ ? :)
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, 2013/07/24
- 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
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Alex Bligh, 2013/07/25
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Jan Kiszka, 2013/07/25
- 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, Jan Kiszka, 2013/07/25
- 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, Jan Kiszka, 2013/07/25
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Paolo Bonzini, 2013/07/25
- Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Jan Kiszka, 2013/07/25
- 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, Jan Kiszka, 2013/07/25
Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Paolo Bonzini, 2013/07/25
Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Alex Bligh, 2013/07/25
Re: [Qemu-devel] [RFC 0/8] arm AioContext with its own timer stuff, Stefan Hajnoczi, 2013/07/26