[ceph-users] Re: Different behaviors for ceph kernel client in limiting IOPS when data pool enters `nearfull`?

2023-11-17 Thread Xiubo Li
On 11/17/23 00:41, Ilya Dryomov wrote: On Thu, Nov 16, 2023 at 5:26 PM Matt Larson wrote: Ilya, Thank you for providing these discussion threads on the Kernel fixes for where there was a change and details on this affects the clients. What is the expected behavior in CephFS client when

[ceph-users] Re: Different behaviors for ceph kernel client in limiting IOPS when data pool enters `nearfull`?

2023-11-16 Thread Xiubo Li
On 11/16/23 22:39, Ilya Dryomov wrote: On Thu, Nov 16, 2023 at 3:21 AM Xiubo Li wrote: Hi Matt, On 11/15/23 02:40, Matt Larson wrote: On CentOS 7 systems with the CephFS kernel client, if the data pool has a `nearfull` status there is a slight reduction in write speeds (possibly 20-50%

[ceph-users] Re: Different behaviors for ceph kernel client in limiting IOPS when data pool enters `nearfull`?

2023-11-16 Thread Ilya Dryomov
On Thu, Nov 16, 2023 at 5:26 PM Matt Larson wrote: > > Ilya, > > Thank you for providing these discussion threads on the Kernel fixes for > where there was a change and details on this affects the clients. > > What is the expected behavior in CephFS client when there are multiple data > pools

[ceph-users] Re: Different behaviors for ceph kernel client in limiting IOPS when data pool enters `nearfull`?

2023-11-16 Thread Matt Larson
Ilya, Thank you for providing these discussion threads on the Kernel fixes for where there was a change and details on this affects the clients. What is the expected behavior in CephFS client when there are multiple data pools in the CephFS? Does having 'nearfull' in any data pool in the

[ceph-users] Re: Different behaviors for ceph kernel client in limiting IOPS when data pool enters `nearfull`?

2023-11-16 Thread Ilya Dryomov
On Thu, Nov 16, 2023 at 3:21 AM Xiubo Li wrote: > > Hi Matt, > > On 11/15/23 02:40, Matt Larson wrote: > > On CentOS 7 systems with the CephFS kernel client, if the data pool has a > > `nearfull` status there is a slight reduction in write speeds (possibly > > 20-50% fewer IOPS). > > > > On a

[ceph-users] Re: Different behaviors for ceph kernel client in limiting IOPS when data pool enters `nearfull`?

2023-11-15 Thread Xiubo Li
Hi Matt, On 11/15/23 02:40, Matt Larson wrote: On CentOS 7 systems with the CephFS kernel client, if the data pool has a `nearfull` status there is a slight reduction in write speeds (possibly 20-50% fewer IOPS). On a similar Rocky 8 system with the CephFS kernel client, if the data pool has