Performance Degradation with rsync in container or cgroupv2 with MEM limit

[Greg KH]

On Wed, Mar 26, 2025 at 02:11:41PM +0200, Alexandru Lazarev wrote:
> Hi everyone,
> I'm experiencing a significant performance degradation when using
> "rsync" to copy files over the network from within a container or
> cgroup with memory limits on Oracle Linux 9.2. The issue occurs with
> the Red Hat Compatible Kernel (RHCK) 5.14.0-284.11.1.el9_2.x86_64 but
> not with the Unbreakable Enterprise Kernel (UEK)
> 5.15.0-101.103.2.1.el9uek.x86_64.

<snip>

As you are paying for Oracle support for these kernels, please contact
them to take advantage of that support.  They are the only ones that can
help you out here as no one in the community has any idea of what is in
these kernels at all, sorry.

good luck!

greg k-h