https://bugzilla.kernel.org/show_bug.cgi?id=217965 Matteo Italia (matteo@xxxxxxxxxxx) changed: What |Removed |Added ---------------------------------------------------------------------------- CC| |matteo@xxxxxxxxxxx --- Comment #66 from Matteo Italia (matteo@xxxxxxxxxxx) --- I think I'm experiencing the same problem; relatively big (1.5T), relatively empty (716 G used) ext4 partition on a slow-ish SATA magnetic HDD (ST3000DM007-1WY10G), stripe=32747, 6.5.0-14-generic kernel from Ubuntu 22.04 HWE stack; during the installation of COMSOL Multiphysics 6.2 (which essentially untars ~16 GB of stuff) I got kworker flush process stuck at 100% of CPU for multiple hours, and IO cache filling my 32 GB of RAM. I tried the various parameters tweaking suggested here with no particular change of pace (although maybe the pending IO still worked according to the old values?). I run the bfq scheduler on this disk, but I tried to switch to pretty much all other schedulers mid-process with no perceptible change. After ~3 hours of agonizingly slow progress (with disk write performance for the installation often in the tens of KB/s) I decided to abort the installation. I rebooted in the Ubuntu GA kernel (5.15.0-92-generic) without touching any specific parameter and restarted the installation; this time it completed in ~10 minutes. -- You may reply to this email to add a comment. You are receiving this mail because: You are watching the assignee of the bug.
