From: Evgeniy Polyakov <johnpol-9fLWQ3dKdXwox3rIn2DAYQ@public.gmane.org>
To: Avi Kivity <avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
Cc: kvm-devel-5NWGOfrQmneRv+LV9MX5uipxlwaOVQ5f@public.gmane.org,
netdev <netdev-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>
Subject: Re: QEMU PIC indirection patch for in-kernel APIC work
Date: Tue, 10 Apr 2007 16:30:37 +0400 [thread overview]
Message-ID: <20070410123034.GA11493@2ka.mipt.ru> (raw)
In-Reply-To: <461B8069.6070007-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
On Tue, Apr 10, 2007 at 03:17:45PM +0300, Avi Kivity (avi-atKUWr5tajBWk0Htik3J/w@public.gmane.org) wrote:
> >Check a link please in case we are talking about different ideas:
> >http://marc.info/?l=linux-netdev&m=112262743505711&w=2
> >
> >
>
> I don't really understand what you're testing there. in particular, how
> can the copying time change so dramatically depending on whether you've
> just rebooted or not?
I tested page remapping time - i.e. time to replace a page in two
different mappings - the same should be performed in host and guest
kernels if such design is going to be used for communication.
I can only explain after-reboot slow copy with empty caches - arbitrary
kernel pages were copied into buffer (not the same data as in posted
code).
--
Evgeniy Polyakov
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next prev parent reply other threads:[~2007-04-10 12:30 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
[not found] <4613B438.60107@codemonkey.ws>
[not found] ` <4613B89F.8090806@qumranet.com>
[not found] ` <4613BC6B.1070708@codemonkey.ws>
[not found] ` <4613BF07.50606@qumranet.com>
[not found] ` <4613C993.9020405@codemonkey.ws>
[not found] ` <4613CC01.1090500@qumranet.com>
[not found] ` <4613CDB2.4000903@codemonkey.ws>
[not found] ` <4613D001.3040606@qumranet.com>
[not found] ` <20070404200112.GA6070@elte.hu>
[not found] ` <4614098F.2030307@us.ibm.com>
[not found] ` <20070404212103.GA19026@elte.hu>
2007-04-04 23:19 ` [kvm-devel] QEMU PIC indirection patch for in-kernel APIC work Rusty Russell
2007-04-05 7:17 ` Avi Kivity
2007-04-06 1:02 ` Rusty Russell
2007-04-08 5:36 ` Avi Kivity
[not found] ` <46187F4E.1080807-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-08 9:04 ` Muli Ben-Yehuda
2007-04-09 2:50 ` Rusty Russell
[not found] ` <1176087018.11664.65.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-09 7:10 ` Avi Kivity
[not found] ` <4619E6DC.3010804-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-09 9:46 ` Rusty Russell
[not found] ` <1176111984.11664.90.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-09 13:38 ` Avi Kivity
[not found] ` <461A41CA.9080201-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-10 8:07 ` Evgeniy Polyakov
2007-04-10 8:19 ` [kvm-devel] " Avi Kivity
[not found] ` <461B48A8.1060904-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-10 8:58 ` Evgeniy Polyakov
2007-04-10 11:21 ` [kvm-devel] " Avi Kivity
[not found] ` <461B7334.8090807-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-10 11:50 ` Evgeniy Polyakov
2007-04-10 12:17 ` [kvm-devel] " Avi Kivity
[not found] ` <461B8069.6070007-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-10 12:30 ` Evgeniy Polyakov [this message]
[not found] ` <20070410123034.GA11493-9fLWQ3dKdXwox3rIn2DAYQ@public.gmane.org>
2007-04-10 12:49 ` Avi Kivity
2007-04-11 3:53 ` [kvm-devel] " Rusty Russell
[not found] ` <1176263593.26372.84.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-11 4:26 ` Avi Kivity
[not found] ` <461C6360.1060908-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-11 13:23 ` Rusty Russell
[not found] ` <1176297794.14322.72.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-11 14:28 ` Avi Kivity
[not found] ` <461CF098.3090003-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-11 23:30 ` Rusty Russell
[not found] ` <1176334200.14322.133.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-12 3:32 ` Avi Kivity
2007-04-16 0:22 ` [kvm-devel] " Rusty Russell
2007-04-16 5:13 ` Avi Kivity
[not found] ` <1175728768.12230.593.camel-bi+AKbBUZKY6gyzm1THtWbp2dZbC/Bob@public.gmane.org>
2007-04-05 9:30 ` Ingo Molnar
[not found] ` <20070405093033.GC25448-X9Un+BFzKDI@public.gmane.org>
2007-04-05 9:58 ` Avi Kivity
2007-04-05 10:26 ` [kvm-devel] " Ingo Molnar
2007-04-05 11:26 ` Avi Kivity
[not found] ` <4614DCE1.70905-atKUWr5tajBWk0Htik3J/w@public.gmane.org>
2007-04-05 11:36 ` Ingo Molnar
2007-04-06 1:16 ` [kvm-devel] " Rusty Russell
2007-04-06 18:59 ` Ingo Molnar
2007-04-05 10:55 ` Ingo Molnar
2007-04-05 14:32 ` [kvm-devel] " Anthony Liguori
2007-04-06 10:37 ` Ingo Molnar
2007-04-06 11:07 ` Ingo Molnar
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