http://bugzilla.opensuse.org/show_bug.cgi?id=1059015 Bug ID: 1059015 Summary: High CPU usage when copy from NFS share to local host. Classification: openSUSE Product: openSUSE Distribution Version: Leap 42.3 Hardware: 64bit OS: Other Status: NEW Severity: Normal Priority: P5 - None Component: KDE3 Assignee: anixx@opensuse.org Reporter: bulve.rec@gmail.com QA Contact: qa-bugs@suse.de Found By: --- Blocker: --- User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0 Build Identifier: Up to 50% CPU load when copy files from NAS (NFS share) to local HDD disk. Reproducible: Always Steps to Reproduce: 1. Mount //nas_server/media to /home/user/NAS 2. copy bunch of 2-20MB files from /home/user/NAS to /home/user/photos 3. open system monitor My hardware: Intel i7-4771; 24GB RAM; PCI Intel PRO/1000PT Dual port Server adapter. NFS share mounted /home/users/NAS; copying files to sdc1 /home/user/photos; No volume encryption on local host. Local network: GBit LAN; NAS GBit; NFS share; Actual Results: Up to 50% CPU load when copy files from NAS with NFS share with 1GBit LAN interfaces to local host disc. System monitor showing on all 8 CPU cores 30-70% load, in total average 46-58% when Network receiving 28MiB/s, sending 0.3MiB/s. System lags during copy. System activity: CPU% - Memory - Shared Memory +systemd 34% - 2,024K - 3,964K +kdeinit5: 25% - 3,160K - 18,164K -+ksmserver 21% - 5,6,44K - 35,780K --+pasmashell 21%321,960K - 110,832 K -+firefox 1% - 2,416,999K - 142,856K +sddm 8% - 1,208K - 11,752K -+X 8% - 84,280K - 106,728K Expected Results: Expected up to 10% CPU load. No partition or volume encryption. At least I never have issues when on Windows OS with same setup. Very often working with lots of media files from NAS. KDE plasma: 5.8.7 KDE Frame: 5.32.0 Qt: 5.6.2 Kernel: 4.4.79-19 64Bit -- You are receiving this mail because: You are on the CC list for the bug.