Re: Kernel is using a lot of CPU (was: Re: test)
Date: Mon, 30 Jan 2023 13:27:16 UTC
On 30 Jan 2023, at 5:03, Nikos Vassiliadis wrote: >> Hi, >> >> I just rebooted a system of mine and it seems that the kernel is constantly doing something. How could I debug this? >> I am thinking of rebooting it tonight >> >> root@aurora:~ # top -S -b >> last pid: 2196; load averages: 1.00, 1.00, 1.00 up 0+01:54:34 12:41:35 >> 72 processes: 2 running, 69 sleeping, 1 waiting >> CPU: 0.0% user, 0.0% nice, 24.6% system, 0.0% interrupt, 75.3% idle >> Mem: 46M Active, 171M Inact, 1429M Wired, 14G Free >> ARC: 919M Total, 354M MFU, 487M MRU, 6912K Anon, 8726K Header, 63M Other >> 234M Compressed, 610M Uncompressed, 2.60:1 Ratio >> Swap: 16G Total, 16G Free >> >> PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND >> 11 root 4 155 ki31 0B 64K RUN 0 345:06 314.31% idle >> 0 root 49 -16 - 0B 784K swapin 1 112:27 99.85% kernel >> 30 root 319 -16 - 0B 5120K spa->s 3 0:06 0.00% zpool-aurora-os >> 1157 root 1 20 0 176M 150M select 2 0:05 0.00% smbd >> 1154 root 1 20 0 175M 150M select 2 0:05 0.00% smbd >> >> This is a 12.4-RELEASE system. >> >> Thanks for any ideas, >> Nikos >> >> >> > > Sending the email again with the correct subject You could add -H to the top command, which will show kernel threads within the kernel process. Mike