On Tue, Sep 28, 2010 at 03:58:50PM +0530, Jagadish Nadimpalli wrote:
> Hi,
>
> With latest PV-on-HVM branch 2.6.35-rc5-pvhvm-v7, the network performance
> results(Using netperf -H <IP address of netserver> -l 100) range from
> 700Mbps to 730Mbps. Please note that this is similar to the old branch
> 2.6.34-pvhvm. One difference is that the latest branch is much more
> stable. The old branch code used to freeze a lot.
>
These benchmark results are still on a non-EPT CPU?
-- Pasi
> Thanks & Regards,
> Jagadish
>
> On Mon, Sep 27, 2010 at 9:18 PM, Jagadish Nadimpalli
> <[1]jagadish.nadimpalli@xxxxxxxxxxxxxxxxxx> wrote:
>
> Hi Stefano,
>
> Thanks a lot for your responses.
>
> Thanks & Regards,
> Jagadish
>
> On Mon, Sep 27, 2010 at 6:41 PM, Stefano Stabellini
> <[2]stefano.stabellini@xxxxxxxxxxxxx> wrote:
>
> On Mon, 27 Sep 2010, Jagadish Nadimpalli wrote:
> > Did anybody calculate benchmark network performance numbers for
> PV-on-HVM so that I can compare? The link provided by you
> > has some numbers as follows. This don't has the data rate that is
> transferred via a network interface.
> >
> > Average Optimal load -j 4 Run (std deviation):
> > Elapsed Time 215.307 (10.1294)
> > User Time 632.503 (6.4785)
> > System Time 115.497 (4.53905)
> > Percent CPU 347.333 (15.885)
> > Context Switches 43319.7 (2088.39)
> >
> > Sleeps 48950 (3140.18)
> >
>
> I don't think anyone did so far.
>
> > ??
> > ??
> > I verified the "xm dmesg" and there is no print of "Extended Page
> Tables (EPT)". Does this mean that the extended page
> > table support is not there? Can I enable this through BIOS option?
> If it can't be enabled using BIOS option, could you
> > please let me know the Intel chipset series which has this support.
> >
> >
>
> I don't think that EPT can be enable/disable via BIOS, probably your
> cpu doesn't support it.
> The first Intel cpu series to support EPT is Nehalem:
>
> [3]http://en.wikipedia.org/wiki/Nehalem_%28microarchitecture%29
>
> all the new desktops and servers sold today should have ept support,
> you
> can check on the intel website to be sure.
>
> References
>
> Visible links
> 1. mailto:jagadish.nadimpalli@xxxxxxxxxxxxxxxxxx
> 2. mailto:stefano.stabellini@xxxxxxxxxxxxx
> 3. http://en.wikipedia.org/wiki/Nehalem_%28microarchitecture%29
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