Date: Sun, 16 Oct 2022 13:57:04 +0000 From: void <void@f-m.fm> To: freebsd-fs@freebsd.org Subject: zfs with operations like rm -rf takes a very long time recently Message-ID: <f25d069a-2ee7-491a-a5ef-a14b973c12e2@app.fastmail.com>
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Has anything recently changed in -current that would make file operations
on zfs such as rm -rf *.* very slow?
What would I look for and how would I test it?
system is FreeBSD 14.0-CURRENT #5 main-n258595-226e41467ee1 on arm64.aarch64
using GENERIC-NODEBUG kernel.
the zfs is zroot on usb3 on a raspberry pi4 8GB. there appears to be plenty
of resources. cpu speed is 2.1GHz. zroot is external usb3 hd.
Right now it's rm -rf-ing /var/cache/ccache/* which is 5GB max and it's taken
over 10 mins. It was never this slow. No errors in /var/log/messages and none
yet in smartd. zpool scrub last ran successfully 3 days ago.
last pid: 4324; load averages: 0.17, 0.10, 0.12 up 0+02:10:34 14:40:55
77 processes: 1 running, 76 sleeping
CPU: 1.6% user, 0.0% nice, 1.9% system, 0.2% interrupt, 96.4% idle
Mem: 550M Active, 803M Inact, 2224M Wired, 40K Buf, 4239M Free
ARC: 1293M Total, 381M MFU, 725M MRU, 1124K Anon, 30M Header, 156M Other
938M Compressed, 1906M Uncompressed, 2.03:1 Ratio
Swap: 16G Total, 16G Free
Process id to show (+ for all):
PID USERNAME THR PRI NICE SIZE RES STATE C TIME WCPU COMMAND
3871 root 1 20 0 12M 3648K zio->i 2 0:10 0.39% rm
353 _pflogd 1 20 0 13M 2108K bpf 1 0:00 0.00% pflogd
1441 mailnull 1 28 0 25M 9508K select 3 0:01 0.00% exim
TIA,
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