Another example - compilation - PC became unusable ... most of GUI application - don't answer msg only seen ...
top - 13:37:23 up 4:04, 1 user, load average: 56,55, 60,02, 43,35 Tasks: 430 total, 1 running, 429 sleeping, 0 stopped, 0 zombie %Cpu0 : 1,7 us, 1,3 sy, 0,0 ni, 0,0 id, 96,0 wa, 0,0 hi, 1,0 si, 0,0 st %Cpu1 : 3,0 us, 2,7 sy, 0,0 ni, 0,0 id, 94,0 wa, 0,0 hi, 0,3 si, 0,0 st %Cpu2 : 3,7 us, 1,0 sy, 0,0 ni, 9,3 id, 86,0 wa, 0,0 hi, 0,0 si, 0,0 st %Cpu3 : 3,5 us, 2,1 sy, 0,0 ni, 0,0 id, 94,3 wa, 0,0 hi, 0,0 si, 0,0 st %Cpu4 : 3,6 us, 2,6 sy, 0,0 ni, 0,0 id, 93,8 wa, 0,0 hi, 0,0 si, 0,0 st %Cpu5 : 2,0 us, 1,7 sy, 0,0 ni, 0,0 id, 96,3 wa, 0,0 hi, 0,0 si, 0,0 st %Cpu6 : 3,8 us, 1,7 sy, 0,0 ni, 94,5 id, 0,0 wa, 0,0 hi, 0,0 si, 0,0 st %Cpu7 : 2,0 us, 1,0 sy, 0,0 ni, 0,0 id, 97,0 wa, 0,0 hi, 0,0 si, 0,0 st MiB Mem : 31925,3 total, 4748,0 free, 6415,8 used, 20761,6 buff/cache MiB Swap: 980,0 total, 980,0 free, 0,0 used. 23416,2 avail Mem -- You received this bug notification because you are a member of Kernel Packages, which is subscribed to linux in Ubuntu. https://bugs.launchpad.net/bugs/1912960 Title: kcryptd, big file copy, system became unresponsive Status in linux package in Ubuntu: Confirmed Bug description: ubuntu 20.4 Linux eb850 5.4.0-62-generic #70-Ubuntu SMP Tue Jan 12 12:45:47 UTC 2021 x86_64 x86_64 x86_64 GNU/Linux Simple copy big file: janusz@eb850:~$ ls -al tmp.tar.gz -rw-r--r-- 1 janusz janusz 3847997532 sty 24 20:09 tmp.tar.gz janusz@eb850:~$ cp tmp.tar.gz tmp2.tar.gz GUI apps became unresponsive - slack/teams/firefox ... Top show all CPU (cores) ~100% usage in WA (io and kcryptd). nvme0n1 259:0 0 465,8G 0 disk ├─nvme0n1p1 259:1 0 512M 0 part /boot/efi ├─nvme0n1p2 259:2 0 732M 0 part /boot └─nvme0n1p3 259:3 0 464,6G 0 part └─nvme0n1p3_crypt 253:0 0 464,6G 0 crypt ├─ubuntu--vg-root 253:1 0 463,6G 0 lvm / └─ubuntu--vg-swap_1 253:2 0 980M 0 lvm [SWAP] Is there any option that will change/tune kcryptd (dm-crypt) to not use all cores? Today any operation like cp/zip/unzip/git with large files, couse I can't use ubuntu at all. --- ProblemType: Bug ApportVersion: 2.20.11-0ubuntu27.14 Architecture: amd64 AudioDevicesInUse: USER PID ACCESS COMMAND /dev/snd/controlC0: janusz 1801 F.... pulseaudio /dev/snd/pcmC0D0p: janusz 1801 F...m pulseaudio /dev/snd/pcmC0D6c: janusz 1801 F...m pulseaudio CasperMD5CheckResult: skip CurrentDesktop: ubuntu:GNOME DistroRelease: Ubuntu 20.04 InstallationDate: Installed on 2020-04-30 (269 days ago) InstallationMedia: Ubuntu 18.04.3 LTS "Bionic Beaver" - Release amd64 (20190805) MachineType: HP HP EliteBook 850 G6 Package: linux (not installed) ProcFB: 0 i915drmfb ProcKernelCmdLine: BOOT_IMAGE=/vmlinuz-5.4.0-62-generic root=/dev/mapper/ubuntu--vg-root ro quiet splash elevator=mq-deadline vt.handoff=7 ProcVersionSignature: Ubuntu 5.4.0-62.70-generic 5.4.78 RelatedPackageVersions: linux-restricted-modules-5.4.0-62-generic N/A linux-backports-modules-5.4.0-62-generic N/A linux-firmware 1.187.7 Tags: focal Uname: Linux 5.4.0-62-generic x86_64 UpgradeStatus: Upgraded to focal on 2020-10-31 (85 days ago) UserGroups: adm cdrom dip docker lpadmin plugdev sambashare sudo _MarkForUpload: True dmi.bios.date: 02/18/2020 dmi.bios.vendor: HP dmi.bios.version: R70 Ver. 01.04.05 dmi.board.name: 8549 dmi.board.vendor: HP dmi.board.version: KBC Version 52.59.00 dmi.chassis.type: 10 dmi.chassis.vendor: HP dmi.modalias: dmi:bvnHP:bvrR70Ver.01.04.05:bd02/18/2020:svnHP:pnHPEliteBook850G6:pvr:rvnHP:rn8549:rvrKBCVersion52.59.00:cvnHP:ct10:cvr: dmi.product.family: 103C_5336AN HP EliteBook dmi.product.name: HP EliteBook 850 G6 dmi.product.sku: 6XD81EA#AKD dmi.sys.vendor: HP To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1912960/+subscriptions -- Mailing list: https://launchpad.net/~kernel-packages Post to : kernel-packages@lists.launchpad.net Unsubscribe : https://launchpad.net/~kernel-packages More help : https://help.launchpad.net/ListHelp
