Oracle Linux 6 VM volume performance
Hi Openstack-users,
I am having a problem with I/O performance on VM running Oracle Linux 6, I/O throughput on VM Oracle Linux 6 is much lower than VM using another OS (Ubuntu, CentOS).
- VM Oracle Linux 6: throughput 40 MBps https://prnt.sc/buKscX_qEtcF
- Other VM: throughput 113 MBps https://prnt.sc/IRhBUPrGgLOy
- Test tool: dd bs=1M count=1024 if=/dev/zero of=test conv=fdatasync; rm -f test
My Enviroment: - Openstack: Ussuri - Ceph: Octopus 15.2.8 - Compute: CentOS8_x86_64, kernel: 4.18.0-240.15.1.el8_3.x86_64 - KVM: qemu-kvm-5.2.0-16.el8.x86_64 - VM Oracle linux6: kernel-uek-4.1.12-124.42.3.el6uek.x86_64
I think because the kernel of Oracle Linux 6 is too old, maybe an older KVM version could support it, and now KVM does not optimize for this OS.
Could you guy can help me with this?
Why not update to a newer release? Such as Oracle Linux 8?
On Fri, Sep 30, 2022 at 7:50 AM Quang Long longsube@gmail.com wrote:
Hi Openstack-users,
I am having a problem with I/O performance on VM running Oracle Linux 6, I/O throughput on VM Oracle Linux 6 is much lower than VM using another OS (Ubuntu, CentOS).
- VM Oracle Linux 6: throughput 40 MBps
- Other VM: throughput 113 MBps
- Test tool:
dd bs=1M count=1024 if=/dev/zero of=test conv=fdatasync; rm -f test
My Enviroment:
- Openstack: Ussuri
- Ceph: Octopus 15.2.8
- Compute: CentOS8_x86_64, kernel: 4.18.0-240.15.1.el8_3.x86_64
- KVM: qemu-kvm-5.2.0-16.el8.x86_64
- VM Oracle linux6: kernel-uek-4.1.12-124.42.3.el6uek.x86_64
I think because the kernel of Oracle Linux 6 is too old, maybe an older KVM version could support it, and now KVM does not optimize for this OS.
Could you guy can help me with this?
--
*Lê Quang Long*
0942.533.683 | 0977.116.502
My clients need Oracle Linux 6 to maintain their applications.
On Fri, Sep 30, 2022 at 10:20 PM John van Ommen john.vanommen@gmail.com wrote:
Why not update to a newer release? Such as Oracle Linux 8?
On Fri, Sep 30, 2022 at 7:50 AM Quang Long longsube@gmail.com wrote:
Hi Openstack-users,
I am having a problem with I/O performance on VM running Oracle Linux 6, I/O throughput on VM Oracle Linux 6 is much lower than VM using another OS (Ubuntu, CentOS).
- VM Oracle Linux 6: throughput 40 MBps
- Other VM: throughput 113 MBps
- Test tool:
dd bs=1M count=1024 if=/dev/zero of=test conv=fdatasync; rm -f test
My Enviroment:
- Openstack: Ussuri
- Ceph: Octopus 15.2.8
- Compute: CentOS8_x86_64, kernel: 4.18.0-240.15.1.el8_3.x86_64
- KVM: qemu-kvm-5.2.0-16.el8.x86_64
- VM Oracle linux6: kernel-uek-4.1.12-124.42.3.el6uek.x86_64
I think because the kernel of Oracle Linux 6 is too old, maybe an older KVM version could support it, and now KVM does not optimize for this OS.
Could you guy can help me with this?
--
*Lê Quang Long*
0942.533.683 | 0977.116.502
participants (2)
-
John van Ommen
-
Quang Long