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[Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucur
From: |
Avi Kivity |
Subject: |
[Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2 |
Date: |
Sun, 19 Aug 2007 22:31:26 +0300 |
User-agent: |
Thunderbird 2.0.0.5 (X11/20070719) |
Luca wrote:
> On 8/19/07, Luca Tettamanti <address@hidden> wrote:
>
>> +static uint64_t qemu_next_deadline(void) {
>> + uint64_t nearest_delta_us = ULLONG_MAX;
>> + uint64_t vmdelta_us;
>>
>
> Hum, I introduced a bug here... those vars should be signed.
>
> On the overhead introduced: how do you measure it?
>
>
Run a 100Hz guest, measure cpu usage using something accurate like
cyclesoak, with and without dynticks, with and without kvm.
--
Do not meddle in the internals of kernels, for they are subtle and quick to
panic.
- Re: [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, (continued)
- Re: [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Jamie Lokier, 2007/08/19
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Avi Kivity, 2007/08/19
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Paul Brook, 2007/08/19
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Avi Kivity, 2007/08/19
- RE: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Dor Laor, 2007/08/19
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Avi Kivity, 2007/08/20
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Jamie Lokier, 2007/08/19
- RE: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarmtimer infrastrucure - take2, Dor Laor, 2007/08/19
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Avi Kivity, 2007/08/19
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Luca, 2007/08/19
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2,
Avi Kivity <=
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Luca Tettamanti, 2007/08/20
- Re: [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, malc, 2007/08/20
- Re: [kvm-devel] [Qemu-devel] Re: [PATCH 0/4] Rework alarm timer infrastrucure - take2, Luca, 2007/08/20
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Avi Kivity, 2007/08/21
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Luca Tettamanti, 2007/08/21
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, malc, 2007/08/21
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Avi Kivity, 2007/08/22
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Luca Tettamanti, 2007/08/22
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Avi Kivity, 2007/08/22
- [Qemu-devel] Re: [kvm-devel] [PATCH 0/4] Rework alarm timer infrastrucure - take2, Luca, 2007/08/22