oxmail.com <mailto:ch...@foxmail.com>
*Date:* 2017-08-25 10:05
*To:* Chris Friesen <mailto:chris.frie...@windriver.com>; openstack
<mailto:openstack@lists.openstack.org>
*Subject:* Re: Re: [Openstack] guest rbd block device speed limit
This is my ceph performance
-08-25 10:05
To: Chris Friesen; openstack
Subject: Re: Re: [Openstack] guest rbd block device speed limit
This is my ceph performance data:
Total time run: 30.370630
Total writes made: 849
Write size: 4194304
Bandwidth (MB/sec): 111.819
Stddev Bandwidth: 21.6665
): 0.572236
Stddev Latency(s): 0.421846
Max latency(s): 4.06547
Min latency(s): 0.121321
Thanks!
ch...@foxmail.com
From: Chris Friesen
Date: 2017-08-24 23:14
To: openstack@lists.openstack.org
Subject: Re: [Openstack] guest rbd block device speed limit
On 08/24/2017 01:04 AM
On 08/24/2017 01:04 AM, ch...@foxmail.com wrote:
Hello:
I am using openstack + libvirt + qemu-kvm. The speed of copying files
between virtual machines exceeds 300M Byte per second but the speed of dd
command:
"watch dd oflag=direct,nonblock if=/dev/zero of=/opt/iotest1 bs=4M count=10"
Hello:
I am using openstack + libvirt + qemu-kvm. The speed of copying files
between virtual machines exceeds 300M Byte per second but the speed of dd
command:
"watch dd oflag=direct,nonblock if=/dev/zero of=/opt/iotest1 bs=4M count=10"
is around 20M byte per second. Every guest is the sa
