From: Janusz Dziedzic <janusz.dziedzic@gmail.com>
To: linux-crypto@vger.kernel.org
Subject: kcryptd, copy big file, unresponsive system (GUI)
Date: Mon, 25 Jan 2021 14:09:53 +0100 [thread overview]
Message-ID: <CAFED-jkqPP2nHjnKRrvBqC8H0aB4910A2cFVFnHxfOxjUQeHXw@mail.gmail.com> (raw)
Hello,
Not sure this is correct group.
Problem I have.
PC:
- hp elitebook 850 g5 + nvme SSD 512G
- Ubuntu 20.x
- kernel
janusz@eb850:~$ uname -a
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
Also check linux-image-5.11.0-rc4+ - but didn't help.
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).
Only I see this issue?
Seems dm-crypt starving my system...
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]
System became unresponsive for few minutes. Example top I get:
top - 09:00:33 up 12 min, 1 user, load average: 11,55, 7,23, 3,60
Tasks: 341 total, 1 running, 340 sleeping, 0 stopped, 0 zombie
%Cpu0 : 1,3 us, 7,0 sy, 0,0 ni, 0,0 id, 91,7 wa, 0,0 hi, 0,0 si, 0,0 st
%Cpu1 : 5,9 us, 7,3 sy, 0,0 ni, 0,0 id, 86,8 wa, 0,0 hi, 0,0 si, 0,0 st
%Cpu2 : 3,7 us, 7,0 sy, 0,3 ni, 27,4 id, 61,5 wa, 0,0 hi, 0,0 si, 0,0 st
%Cpu3 : 3,0 us, 6,6 sy, 0,0 ni, 0,0 id, 90,4 wa, 0,0 hi, 0,0 si, 0,0 st
%Cpu4 : 2,0 us, 6,7 sy, 0,0 ni, 69,3 id, 22,0 wa, 0,0 hi, 0,0 si, 0,0 st
%Cpu5 : 4,7 us, 8,0 sy, 0,7 ni, 0,0 id, 86,7 wa, 0,0 hi, 0,0 si, 0,0 st
%Cpu6 : 4,4 us, 5,8 sy, 0,0 ni, 0,0 id, 89,8 wa, 0,0 hi, 0,0 si, 0,0 st
%Cpu7 : 2,0 us, 6,7 sy, 0,0 ni, 0,0 id, 91,3 wa, 0,0 hi, 0,0 si, 0,0 st
MiB Mem : 31922,9 total, 18111,2 free, 3655,1 used, 10156,6 buff/cache
MiB Swap: 980,0 total, 980,0 free, 0,0 used. 26893,0 avail Mem
PID USER PR NI VIRT RES SHR S %CPU %MEM TIME+ COMMAND
3635 janusz 20 0 2841208 302720 117252 S 8,9 0,9 1:10.78 Web Content
2059 janusz 20 0 4961508 284548 102652 S 6,9 0,9 0:26.83 gnome-shell
1823 janusz 9 -11 3352488 19036 15332 S 6,3 0,1 0:41.25 pulseaudio
2631 janusz 20 0 819484 53192 38340 S 5,9 0,2 0:07.68 gnome-terminal-
454 root 20 0 0 0 0 D 5,6 0,0 0:08.08 kworker/u16:7+kcryptd/253:0
3452 janusz 20 0 3905104 362944 194092 S 5,6 1,1 0:52.16 firefox
4667 root 20 0 0 0 0 D 5,6 0,0 0:05.93 kworker/u16:3+kcryptd/253:0
126 root 20 0 0 0 0 D 5,3 0,0 0:06.50 kworker/u16:1+kcryptd/253:0
447 root 20 0 0 0 0 D 5,3 0,0 0:07.15 kworker/u16:5+kcryptd/253:0
450 root 20 0 0 0 0 D 5,3 0,0 0:08.38 kworker/u16:6+kcryptd/253:0 .
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
BR
Janusz
reply other threads:[~2021-01-26 5:59 UTC|newest]
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