http://bugzilla.opensuse.org/show_bug.cgi?id=1177541 Bug ID: 1177541 Summary: System freezes under high disk I/O usage Classification: openSUSE Product: openSUSE Distribution Version: Leap 15.2 Hardware: HP OS: openSUSE Leap 15.2 Status: NEW Severity: Major Priority: P5 - None Component: Kernel Assignee: kernel-bugs@opensuse.org Reporter: Abdulrhman.Ied@Gmail.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/86.0.4240.75 Safari/537.36 Build Identifier: My system freezes for few seconds when there is high disk usage, like copying large files, or when opening a demanding chrome web pages (due to swaping?). It happens on Ext4, Btrfs and XFS, so file system doesn't matter. It happens on both Gnome and Xfce, so that also doesn't matter. Windows 10, Fedora and Ubuntu works almost fine on the same device, it's a problem with Leap 15.2 only. So I upgraded my system from Leap 15.2 to TW, and everything works almost fine now. I booted my device to TW but with Leap kernel (5.3.18-lp152.44-default), and the freezes happen again. So it seems to me that's a kernel issue. My search lead me to multiple cases with the same issue (different distros). See: https://askubuntu.com/questions/1212736/system-freezes-on-disk-i-o And: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1861359 It seems like newer kernel have this issue fixed, maybe version 5.5.6 (as stated in the link), and it seems that Ubuntu backported successfully a fix to kernel 5.4. This issue is very annoying, I hope openSUSE can backport a fix from upstream. Reproducible: Always Steps to Reproduce: 1. Start a disk demanding process, like copying large files Actual Results: Freezes and a laggy mouse cursor Expected Results: Smooth system Maybe it could be more obvious in devices with low ram, but Ubuntu 20.04 and Windows 10 work perfectly on the same device. -- You are receiving this mail because: You are on the CC list for the bug.