From: Stefano Stabellini <stefano.stabellini@xilinx.com>
To: Julien Grall <julien.grall@arm.com>
Cc: Stefano Stabellini <stefano.stabellini@xilinx.com>,
andrii_anisov@epam.com, Milan Boberic <milanboberic94@gmail.com>,
Dario Faggioli <dfaggioli@suse.com>,
sstabellini@kernel.org, Meng Xu <xumengpanda@gmail.com>,
xen-devel@lists.xenproject.org, nd@arm.com
Subject: Re: Xen optimization
Date: Thu, 25 Oct 2018 09:15:51 -0700 [thread overview]
Message-ID: <alpine.DEB.2.10.1810250915030.25937@sstabellini-ThinkPad-X260> (raw)
In-Reply-To: <d5769cb9-9d87-3db4-e23d-414242692a89@arm.com>
On Thu, 25 Oct 2018, Julien Grall wrote:
> Hi Stefano,
>
> On 10/24/18 1:24 AM, Stefano Stabellini wrote:
> > On Tue, 23 Oct 2018, Milan Boberic wrote:
> > I don't have any other things to suggest right now. You should be able
> > to measure an overall 2.5us IRQ latency (if the interrupt rate is not
> > too high).
>
> Is it number you measured on Xen 4.11 flavored Xilinx? Or are they coming from
> the blog post [1] which is based on Xen 4.9?
>
> If the latter, then I can't rule out we may have introduce a slowdown for good
> or bad reason...
>
> To rule out this possibility, I would recommend to try and reproduce the same
> number on Xen 4.9 and then try with Xen 4.11.
>
> Cheers,
>
> [1] https://blog.xenproject.org/2017/03/20/xen-on-arm-interrupt-latency/
I was talking about the old numbers from Xen 4.9. You are right, we
cannot rule out the possibility that we introduced a slowdown.
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next prev parent reply other threads:[~2018-10-25 16:16 UTC|newest]
Thread overview: 70+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-09 10:59 Xen optimization Milan Boberic
2018-10-09 16:46 ` Dario Faggioli
2018-10-10 11:22 ` Milan Boberic
2018-10-10 11:25 ` Milan Boberic
2018-10-10 16:41 ` Meng Xu
2018-10-11 7:36 ` Milan Boberic
2018-10-11 12:17 ` Milan Boberic
2018-10-11 17:05 ` Dario Faggioli
2018-10-11 15:39 ` Meng Xu
2018-10-11 22:29 ` Stefano Stabellini
2018-10-12 15:33 ` Milan Boberic
2018-10-12 16:36 ` Julien Grall
2018-10-12 17:43 ` Stefano Stabellini
2018-10-13 16:01 ` Milan Boberic
2018-10-14 22:46 ` Stefano Stabellini
2018-10-15 12:27 ` Milan Boberic
2018-10-16 7:13 ` Stefano Stabellini
2018-10-15 8:14 ` Julien Grall
2018-10-15 12:50 ` Julien Grall
2018-10-15 13:01 ` Milan Boberic
2018-10-15 13:03 ` Julien Grall
2018-10-17 15:19 ` Milan Boberic
2018-10-19 21:02 ` Stefano Stabellini
2018-10-19 22:41 ` Dario Faggioli
2018-10-22 15:02 ` Milan Boberic
2018-10-22 17:52 ` Stefano Stabellini
2018-10-23 8:58 ` Milan Boberic
2018-10-24 0:24 ` Stefano Stabellini
2018-10-25 10:09 ` Milan Boberic
2018-10-25 11:30 ` Julien Grall
2018-10-25 12:36 ` Milan Boberic
2018-10-25 13:44 ` Dario Faggioli
2018-10-25 14:00 ` Julien Grall
2018-10-25 14:04 ` Julien Grall
2018-10-25 14:47 ` Milan Boberic
2018-10-25 14:51 ` Julien Grall
2018-10-25 16:18 ` Xen optimizationcy Stefano Stabellini
2018-10-25 11:09 ` Xen optimization Julien Grall
2018-10-25 16:15 ` Stefano Stabellini [this message]
2018-10-26 19:12 ` Julien Grall
2018-10-26 20:41 ` Stefano Stabellini
2018-10-29 12:29 ` Milan Boberic
2018-10-31 18:59 ` Julien Grall
2018-10-31 20:35 ` Milan Boberic
2018-10-31 21:16 ` Julien Grall
2018-11-01 20:20 ` Stefano Stabellini
2018-11-01 20:35 ` Julien Grall
2018-11-20 11:33 ` Andrii Anisov
2018-11-27 21:27 ` Stefano Stabellini
2018-11-29 8:19 ` Andrii Anisov
2018-12-10 10:58 ` Andrii Anisov
2018-12-10 11:54 ` Julien Grall
2018-12-10 12:23 ` Andrii Anisov
2018-12-11 12:27 ` Julien Grall
2018-12-11 16:56 ` Dario Faggioli
2018-12-12 9:39 ` Andrii Anisov
2018-12-12 17:10 ` Dario Faggioli
2018-12-12 17:32 ` Andrii Anisov
2018-12-12 17:59 ` Dario Faggioli
2018-12-13 7:48 ` Andrii Anisov
2018-12-11 18:39 ` Stefano Stabellini
2018-12-11 19:05 ` Julien Grall
2018-12-11 19:29 ` Stefano Stabellini
2018-12-12 9:46 ` Andrii Anisov
2018-12-12 10:41 ` Andrii Anisov
2018-12-12 17:39 ` Stefano Stabellini
2018-12-12 17:47 ` Andrii Anisov
2018-12-12 18:01 ` Stefano Stabellini
2018-12-12 9:34 ` Andrii Anisov
2018-11-07 13:14 ` Julien Grall
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