In networking filesystems such as NFS, copying data involves sending the copied data from the server to the client through the network, then sending it again from the client to the new file in the server. This system call is only very slightly faster than cp, because the costs of these memory copies are barely noticeable compared with the time it takes to do the actual I/O, but there are some cases where it can help a lot more. In this release Linux adds a system call, copy_file_range(2), which allows to copy a range of data from one file to another, avoiding the mentioned cost of transferring data from the kernel to user space and then back into the kernel. There is nothing wrong with this way of doing things, but it requires doing extra copies of the data to/from the process memory. Copy offloading with new copy_file_range(2) system callĬopying a file consists in reading the data from a file to user space memory, then copy that memory to the destination file. Proper control of socket memory usage in the memory controllerġ.1.Performance improvements for SO_REUSEPORT UDP sockets.cgroup unified hierarchy is considered stable.Forwarded Error Correction support in the device-mapper's verity target.Support for GCC's Undefined Behavior Sanitizer (-fsanitize=undefined).Btrfs free space handling scalability improvements.Experimental PowerPlay supports brings high performance to the amdgpu driver.Copy offloading with new copy_file_range(2) system call.Then do a full upgrade, however you normally prefer to do this. Just add the Kubuntu-backports PPA: sudo add-apt-repository ppa:kubuntu-ppa/backports The procedure is much as it was when we described how to install Plasma 5.25 on Kubuntu Jammy. If you don't want to wait, you can install it now on Kubuntu 22.10. As such, Plasma 5.27 is a long-term support release, so it's worth upgrading to it. KDE Plasma 5.27 is out, and it's expected to be the final release in the KDE 5.x series – KDE Plasma 6 should arrive at some point, but it's not yet clear when.
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