* piaojun (piao...@huawei.com) wrote:
>
>
> On 2019/8/12 18:05, Stefan Hajnoczi wrote:
> > On Sun, Aug 11, 2019 at 10:26:18AM +0800, piaojun wrote:
> >> On 2019/8/9 16:21, Stefan Hajnoczi wrote:
> >>> On Thu, Aug 08, 2019 at 10:53:16AM +0100, Dr. David Alan Gilbert wrote:
> * Stefan
On 2019/8/12 18:05, Stefan Hajnoczi wrote:
> On Sun, Aug 11, 2019 at 10:26:18AM +0800, piaojun wrote:
>> On 2019/8/9 16:21, Stefan Hajnoczi wrote:
>>> On Thu, Aug 08, 2019 at 10:53:16AM +0100, Dr. David Alan Gilbert wrote:
* Stefan Hajnoczi (stefa...@redhat.com) wrote:
> On Wed, Aug
On Sun, Aug 11, 2019 at 10:26:18AM +0800, piaojun wrote:
> On 2019/8/9 16:21, Stefan Hajnoczi wrote:
> > On Thu, Aug 08, 2019 at 10:53:16AM +0100, Dr. David Alan Gilbert wrote:
> >> * Stefan Hajnoczi (stefa...@redhat.com) wrote:
> >>> On Wed, Aug 07, 2019 at 04:57:15PM -0400, Vivek Goyal wrote:
>
On 2019/8/9 16:21, Stefan Hajnoczi wrote:
> On Thu, Aug 08, 2019 at 10:53:16AM +0100, Dr. David Alan Gilbert wrote:
>> * Stefan Hajnoczi (stefa...@redhat.com) wrote:
>>> On Wed, Aug 07, 2019 at 04:57:15PM -0400, Vivek Goyal wrote:
>>> 2. Can MAP/UNMAP be performed directly in QEMU via a
On Thu, Aug 08, 2019 at 08:53:20AM -0400, Vivek Goyal wrote:
> On Thu, Aug 08, 2019 at 10:53:16AM +0100, Dr. David Alan Gilbert wrote:
> > * Stefan Hajnoczi (stefa...@redhat.com) wrote:
> > > On Wed, Aug 07, 2019 at 04:57:15PM -0400, Vivek Goyal wrote:
> > > > Kernel also serializes MAP/UNMAP on
On Fri, Aug 09, 2019 at 09:21:02AM +0100, Stefan Hajnoczi wrote:
> On Thu, Aug 08, 2019 at 10:53:16AM +0100, Dr. David Alan Gilbert wrote:
> > * Stefan Hajnoczi (stefa...@redhat.com) wrote:
> > > On Wed, Aug 07, 2019 at 04:57:15PM -0400, Vivek Goyal wrote:
> > > 2. Can MAP/UNMAP be performed
On Thu, Aug 08, 2019 at 08:53:20AM -0400, Vivek Goyal wrote:
> On Thu, Aug 08, 2019 at 10:53:16AM +0100, Dr. David Alan Gilbert wrote:
> > * Stefan Hajnoczi (stefa...@redhat.com) wrote:
> > > On Wed, Aug 07, 2019 at 04:57:15PM -0400, Vivek Goyal wrote:
> > > > Kernel also serializes MAP/UNMAP on
On Thu, Aug 08, 2019 at 10:53:16AM +0100, Dr. David Alan Gilbert wrote:
> * Stefan Hajnoczi (stefa...@redhat.com) wrote:
> > On Wed, Aug 07, 2019 at 04:57:15PM -0400, Vivek Goyal wrote:
> > 2. Can MAP/UNMAP be performed directly in QEMU via a separate virtqueue?
>
> I think there's two things to
On Thu, Aug 08, 2019 at 10:53:16AM +0100, Dr. David Alan Gilbert wrote:
> * Stefan Hajnoczi (stefa...@redhat.com) wrote:
> > On Wed, Aug 07, 2019 at 04:57:15PM -0400, Vivek Goyal wrote:
> > > Kernel also serializes MAP/UNMAP on one inode. So you will need to run
> > > multiple jobs operating on
On Thu, Aug 08, 2019 at 04:10:00PM +0800, piaojun wrote:
> From my test, your patch set of multithreading improves iops greatly as
> below:
Thank you for sharing your results!
Stefan
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* Stefan Hajnoczi (stefa...@redhat.com) wrote:
> On Wed, Aug 07, 2019 at 04:57:15PM -0400, Vivek Goyal wrote:
> > Kernel also serializes MAP/UNMAP on one inode. So you will need to run
> > multiple jobs operating on different inodes to see parallel MAP/UNMAP
> > (atleast from kernel's point of
On Wed, Aug 07, 2019 at 04:57:15PM -0400, Vivek Goyal wrote:
> Kernel also serializes MAP/UNMAP on one inode. So you will need to run
> multiple jobs operating on different inodes to see parallel MAP/UNMAP
> (atleast from kernel's point of view).
Okay, there is still room to experiment with how
Hi Stefan,
>From my test, your patch set of multithreading improves iops greatly as
below:
Guest configuration:
8 vCPU
8GB RAM
Linux 5.1 (vivek-aug-06-2019)
Host configuration:
Intel(R) Xeon(R) CPU E5-2670 0 @ 2.60GHz (8 cores x 4 threads)
32GB RAM
Linux 3.10.0
EXT4 + LVM + local HDD
---
On Wed, Aug 07, 2019 at 07:03:55PM +0100, Stefan Hajnoczi wrote:
> On Thu, Aug 01, 2019 at 05:54:05PM +0100, Stefan Hajnoczi wrote:
> > Performance
> > ---
> > Please try these patches out and share your results.
>
> Here are the performance numbers:
>
> Threadpool | iodepth | iodepth
Hi Stefan,
On 2019/8/5 16:01, Stefan Hajnoczi wrote:
> On Mon, Aug 05, 2019 at 10:52:21AM +0800, piaojun wrote:
>> # fio -direct=1 -time_based -iodepth=1 -rw=randwrite -ioengine=libaio -bs=1M
>> -size=1G -numjob=1 -runtime=30 -group_reporting -name=file
>> -filename=/mnt/9pshare/file
>
> This
On Mon, Aug 05, 2019 at 10:52:21AM +0800, piaojun wrote:
> # fio -direct=1 -time_based -iodepth=1 -rw=randwrite -ioengine=libaio -bs=1M
> -size=1G -numjob=1 -runtime=30 -group_reporting -name=file
> -filename=/mnt/9pshare/file
This benchmark configuration (--iodepth=1 --numjobs=1) cannot
Hi Stefan,
>From my test, 9p has better bandwidth than virtio as below:
---
9p Test:
# mount -t 9p -o
trans=virtio,version=9p2000.L,rw,nodev,msize=10,access=client 9pshare
/mnt/9pshare
# fio -direct=1 -time_based -iodepth=1 -rw=randwrite -ioengine=libaio -bs=1M
-size=1G -numjob=1
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