I just installed 14.1-PRELEASE(stable/14). This one is arm64 virtual machine and has about 4GB. I use ZFS but as an external device and thus don't use enable_zfs. 14.1-PRELEASE booted okay. After zpool import, kernel started using 100% of a single CPI. The "top" shows keeps "swapin". Memory usage is low all times.
I tested with amd64 from the same source code. amd64 didn't reproduce the issue.
After `git bisect`, I found a range of bad commits. There multiple versions that buildworld/buildkernel failed and couldn't identify a single version. On the older version of kernel, kernel spins just booting. The zfs only causes swapin spin in newer version of kernel including 14.1-BETA*. This is the output of final bisect steps: Bisecting: 9 revisions left to test after this (roughly 3 steps) [ea3197e69bf3c232999bd2bdf20cc968e1a361bb] kcmp: Add a manual page % git bisect bad Bisecting: 7 revisions left to test after this (roughly 3 steps) [7dff3d1cdfd1556d2137ddd8dd1916e0945ed240] kcmp(2): implement for devfs files % git bisect skip Bisecting: 7 revisions left to test after this (roughly 3 steps) [575a909aa2430fcfe5b8ca8ae0d063a8b775fe4b] kcmp(2): implement for generic file types % git bisect skip Bisecting: 7 revisions left to test after this (roughly 3 steps) [d7c4a6205feb6ba2d44159e343ec61cae3ecffb4] file: add fo_cmp method % git bisect good Bisecting: 5 revisions left to test after this (roughly 3 steps) [c0565e7d34ac248bf3c20c66f341a64a6e33d6d9] Create namespace for the symbols added during 15-CURRENT cycle % git bisect bad Bisecting: 4 revisions left to test after this (roughly 2 steps) [b566e44b2b88eb9f1b3b658998c7418cccab9e2f] stable/14: bump __FreeBSD_version for kcmp(2) and kern_openatfp(9) % git bisect skip There are only 'skip'ped commits left to test. The first bad commit could be any of: 7dff3d1cdfd1556d2137ddd8dd1916e0945ed240 098500b79e1734f269743eabb624c854804c67ac 81cee1350ff87537f8203d2db0e8ed2acdff7aef 0b864eb03f6621d9d0f122e6b18360a4778a4647 575a909aa2430fcfe5b8ca8ae0d063a8b775fe4b 136d75ad86d1a62d673490ed2679e7819444f0a9 f8d885c08dfc3d93ba00ae216c9587e990d64a5b add51cc280f3a48abb2f4fc2e2e4f56efc186d54 b566e44b2b88eb9f1b3b658998c7418cccab9e2f c0565e7d34ac248bf3c20c66f341a64a6e33d6d9 We cannot bisect more!