We are using on the grub.conf
elevator=noop
on grub.conf
after
title CentOS (2.6.32-431.20.3.0.1.el6.centos.plus.x86_64)
root (hd0,0)
kernel /vmlinuz-2.6.32-431.20.3.0.1.el6.centos.plus.x86_64 ro
root=/dev/mapper/vg_tmpl01-lv_root r
O_LUKS rd_LVM_LV=vg_tmpl01/lv_swap LANG=en_US.UTF-8
rd_LVM_LV=vg_tmpl01/lv_root rd_NO_MD SYSFONT=latarcyrh
sun16 crashkernel=auto KEYBOARDTYPE=pc KEYTABLE=us rd_NO_DM rhgb quiet
elevator=noop
On Tue, Jul 22, 2014 at 3:29 PM, evanitsharp <evanitsh...@gmail.com> wrote:
>
> I have tried as what you said, but it doesn't seem to help.
> Default config of network.throttling.rate and vm.network.throttling.rate
> are both 200 MB/s,that's enouth for VM
>
> A friend of mailing list said the cause is that virtio wasn't the default
> on rhel6.3.
> Is it right?if so,what should I do if I want to use
> CloudStack4.2.1+KVM(with rhel6.3) as deployment of our cloud to solve the
> problem?
>
> Looking forward to your reply
> Thanks.
>
> --Evan
>
>
>
>
> Evan
>
> Mail:evanitsh...@gmail.com
>
> From: Pierre-Luc Dion
> Date: 2014-07-22 10:48
> To: users@cloudstack.apache.org
> CC: dev@cloudstack
> Subject: Re: Re: Why is the I/O speed of VM so terrible when using
> CloudStack4.2 + KVM deployment
> could it be possible it is the Global settings: network.throttling.rate and
> vm.network.throttling.rate ?
> what if you set them to 0 and restart systemvms,vr and Instances?
>
>
> Pierre-Luc
>
>
> On Mon, Jul 21, 2014 at 9:20 PM, evanitsharp <evanitsh...@gmail.com>
> wrote:
>
> > Hi, David:
> > Thanks for your suggest.
> > But I had tested CloudStack4.1.1 + KVM(with rhel6.3)，the I/O speed was
> > normal.
> >
> >
> > Does anyone has any other advice?
> > Please tell me the details of step on how to solve the problem if
> possible
> > Thank you
> >
> >
> >
> >
> > Evan
> >
> > Mail:evanitsh...@gmail.com
> >
> > From: David Nalley
> > Date: 2014-07-21 12:43
> > To: users@cloudstack.apache.org
> > CC: dev@cloudstack
> > Subject: Re: Why is the I/O speed of VM so terrible when using
> > CloudStack4.2 + KVM deployment
> > IIRC, virtio wasn't the default until EL6.4.
> >
> > --David
> >
> > On Sun, Jul 20, 2014 at 10:12 PM, evanitsharp <evanitsh...@gmail.com>
> > wrote:
> > > Dear all:
> > > I/O speed of our guest VMs are so slow when uploading or
> > downloading file from them.
> > > I have tried Basic and Advanced network, but I got the same
> result.
> > >
> > > Our environment is :
> > > CloudStack 4.2.1 + KVM Host(with rhel6.3 running on it).
> > >
> > > But if I use CentOS 6.4 instead of rhel 6.3 as operating system of KVM
> > host, The I/O speed is normal.
> > > Also, CloudStack 4.1.1 doesn't have this problem.The problem only
> > occuring on CloudStack 4.2 or later version
> > >
> > > Here are my test data around different version of CloudStack
> deployment:
> > > PS: Target VM are virtual machines on KVM Host with WEB or FTP service
> > > CloudStack versionNetwork type of CloudStackKVM software
> > versionOperating system of KVMStorage type of VMOperating system of
> > VMread/write speed of VM's diskAverage speed when downloading file to PC
> of
> > LAN from target VMAverage speed when downloading file to target VM from
> > server of LAN
> > >
> > > 4.1.1BasicQEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2)；qemu-img
> > version 0.12.1rhel6.3sharedrhel6.349.8 MB/sWEB:38.9 MB/s FTP:42.2
> > MB/sWEB:41.0 MB/s FTP:31.7 MB/s
> > > 4.1.1BasicQEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2)；qemu-img
> > version 0.12.1rhel6.3localrhel6.3116 MB/sWEB:80.6 MB/s FTP:80.2
> > MB/sWEB:103 MB/s FTP:64.1 MB/s
> > >
> > >
> > > 4.2.1BasicQEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2)；qemu-img
> > version 0.12.1rhel6.346.0 MB/sWEB:1.05 MB/s FTP:1 MB/sWEB:700 KB/s
> FTP:14
> > MB/s
> > > 4.2.1AdvancedQEMU PC emulator version 0.12.1
> > (qemu-kvm-0.12.1.2)；qemu-img version 0.12.1CentOS release 6.4
> > (Final)sharedrhel6.340.6 MB/sWEB:23.8 MB/sWEB:22.6 KB/s
> > > 4.2.1AdvancedQEMU PC emulator version 0.12.1
> > (qemu-kvm-0.12.1.2)；qemu-img version 0.12.1CentOS release 6.4
> > (Final)localrhel6.348.7 MB/sWEB:24.2 MB/s FTP:24.5MB/sWEB:24.2 MB/s
> > FTP:24.8MB/s
> > >
> > > 4.3BasicQEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2)；qemu-img
> > version 0.12.1rhel6.3sharedrhel6.335.9 MB/sWEB:218 KB/s FTP:211.9
> > KB/sWEB:811 KB/s FTP:3.1 MB/s
> > > 4.3BasicQEMU PC emulator version 0.12.1 (qemu-kvm-0.12.1.2)；qemu-img
> > version 0.12.2rhel6.3localrhel6.348.5 MB/sWEB:217 KB/s FTP:212.5
> > KB/sWEB:708 KB/s FTP:3.0 MB/s
> > >
> > >
> > >
> > > Any advice on how can I resolve the problem?
> > > Looking forward to your reply, thank you.
> > >
> > > Evan
> > >
> > >
> > >
> > >
> > > Evan
> > >
> > > Mail:evanitsh...@gmail.com
> >
>
