From: Vijay Kilari <vijay.kilari@gmail.com>
To: Peter Maydell <peter.maydell@linaro.org>
Cc: "prasun.kapoor" <prasun.kapoor@cavium.com>,
patches@linaro.org, QEMU Developers <qemu-devel@nongnu.org>,
"Kumar, Vijaya" <Vijaya.Kumar@cavium.com>,
qemu-arm <qemu-arm@nongnu.org>,
Paolo Bonzini <pbonzini@redhat.com>
Subject: Re: [Qemu-arm] Fw: [PATCH v2 0/6] Runtime pagesize computation
Date: Wed, 29 Jun 2016 12:30:51 +0530 [thread overview]
Message-ID: <CALicx6tbpSZDBYYzA0Uk5dHGoW-4_CTFuUnUDDe+NGieakts+g@mail.gmail.com> (raw)
In-Reply-To: <BLUPR0701MB1684CF1920D922BD00E93EE6F2230@BLUPR0701MB1684.namprd07.prod.outlook.com>
On Wed, Jun 29, 2016 at 12:24 PM, Kumar, Vijaya <Vijaya.Kumar@cavium.com> wrote:
>
>
>
> ________________________________
> From: Peter Maydell <peter.maydell@linaro.org>
> Sent: Tuesday, June 28, 2016 1:46 PM
> To: qemu-arm; QEMU Developers
> Cc: Paolo Bonzini; Kumar, Vijaya; Patch Tracking
> Subject: Re: [Qemu-arm] [PATCH v2 0/6] Runtime pagesize computation
>
> On 21 June 2016 at 18:09, Peter Maydell <peter.maydell@linaro.org> wrote:
>> This set of patches is a development based on the ones from Vijaya:
>> the general idea is similar but I have tried to improve the interface
>> for defining the page size a bit. I've also tweaked patches 2 and 3
>> to address code review comments.
>
>> NB: I have only very lightly tested these and haven't attempted
>> to measure performance at all. There is an assert() in the
>> definition of TARGET_PAGE_BITS which is good for making sure
>> it isn't used before it's valid but not so good for speed.
>
> Vijaya, are you in a position to test this patchset for
> performance? Presumably you have a test case benchmark you're
> looking to improve here?
I have tested the patches and the test case that I was trying was
Live migration of Idle VM on arm64 platform.
VM migrated is with 4 VCPUS and 8GB RAM running CentOS.
With page bits 10 (1K), the live migration time is 5.8 sec
capabilities: xbzrle: off rdma-pin-all: off auto-converge: off
zero-blocks: off compress: off events: off x-postcopy-ram: off
Migration status: completed
total time: 5857 milliseconds
downtime: 102 milliseconds
setup: 14 milliseconds
transferred ram: 336081 kbytes
throughput: 470.21 mbps
remaining ram: 0 kbytes
total ram: 8519872 kbytes
duplicate: 8271539 pages
skipped: 0 pages
normal: 261340 pages
normal bytes: 261340 kbytes
dirty sync count: 3
With page bits 12 (4K), live migration time is 2.9 sec
capabilities: xbzrle: off rdma-pin-all: off auto-converge: off
zero-blocks: off compress: off events: off x-postcopy-ram: off
Migration status: completed
total time: 2974 milliseconds
downtime: 76 milliseconds
setup: 5 milliseconds
transferred ram: 301327 kbytes
throughput: 830.30 mbps
remaining ram: 0 kbytes
total ram: 8519872 kbytes
duplicate: 2062398 pages
skipped: 0 pages
normal: 70662 pages
normal bytes: 282648 kbytes
dirty sync count: 3
Regards
Vijay
>
> thanks
> -- PMM
next prev parent reply other threads:[~2016-06-29 7:00 UTC|newest]
Thread overview: 31+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-06-21 17:09 [Qemu-arm] [PATCH v2 0/6] Runtime pagesize computation Peter Maydell
2016-06-21 17:09 ` [Qemu-arm] [PATCH v2 1/6] migration: Remove static allocation of xzblre cache buffer Peter Maydell
2016-06-22 1:44 ` [Qemu-arm] [Qemu-devel] " Richard Henderson
2016-06-21 17:09 ` [Qemu-arm] [PATCH v2 2/6] exec.c: Remove static allocation of sub_section of sub_page Peter Maydell
2016-06-22 1:47 ` [Qemu-arm] [Qemu-devel] " Richard Henderson
[not found] ` <BY1PR0701MB169163D3032F7EF4FB8FD000F22C0@BY1PR0701MB1691.namprd07.prod.outlook.com>
2016-06-22 6:55 ` [Qemu-arm] Fw: " Vijay Kilari
2016-06-22 7:07 ` [Qemu-arm] [Qemu-devel] " Richard Henderson
2016-06-21 17:09 ` [Qemu-arm] [PATCH v2 3/6] translate-all.c: Compute L1 page table properties at runtime Peter Maydell
2016-06-22 6:56 ` [Qemu-devel] " Richard Henderson
2016-06-21 17:09 ` [Qemu-arm] [PATCH v2 4/6] cpu: Support a target CPU having a variable page size Peter Maydell
2016-06-21 18:26 ` [Qemu-arm] [Qemu-devel] " Andrew Jones
2016-06-21 19:46 ` Peter Maydell
2016-06-21 17:09 ` [Qemu-arm] [PATCH v2 5/6] target-arm: Make page size a runtime setting Peter Maydell
2016-06-21 17:09 ` [Qemu-arm] [PATCH v2 6/6] hw/arm/virt: Set minimum_page_bits to 12 Peter Maydell
2016-06-21 18:45 ` [Qemu-arm] [Qemu-devel] " Andrew Jones
2016-06-21 19:47 ` Peter Maydell
2016-06-22 8:02 ` Andrew Jones
2016-06-22 11:35 ` Dr. David Alan Gilbert
2016-06-22 11:38 ` [Qemu-arm] " Peter Maydell
2016-06-22 11:54 ` Dr. David Alan Gilbert
2016-06-22 12:02 ` [Qemu-arm] " Peter Maydell
2016-06-22 12:17 ` Dr. David Alan Gilbert
2016-06-22 12:18 ` [Qemu-arm] " Andrew Jones
2016-06-22 10:24 ` Paolo Bonzini
2016-06-22 11:43 ` [Qemu-devel] [PATCH v2 0/6] Runtime pagesize computation Dr. David Alan Gilbert
2016-06-28 8:16 ` [Qemu-arm] " Peter Maydell
[not found] ` <BLUPR0701MB1684CF1920D922BD00E93EE6F2230@BLUPR0701MB1684.namprd07.prod.outlook.com>
2016-06-29 7:00 ` Vijay Kilari [this message]
2016-07-19 11:01 ` [Qemu-arm] Fw: " Vijay Kilari
2016-07-19 11:04 ` Peter Maydell
2016-10-07 14:20 ` [Qemu-devel] Fw: [Qemu-arm] " Peter Maydell
2016-10-08 4:26 ` [Qemu-arm] Fw: " Vijay Kilari
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