hi,
I have an incredibly slow result using ZFS with backuppc4.
I use for ZFS a zraid1
lxdpool/containers/backup compression off
inherited
from lxdpool
lxdpool/containers/backup atime off
inherited
from lxdpool
lxdpool/containers/backup sync disabled
inherited
from lxdpool
lxdpool/containers/backup encryption off
default
lxdpool/containers/backup dedup off
default
but when refcountupdate run the machine is incredibly slow with cpu in WA for
40+%
TID PRIO USER DISK READ DISK WRITE SWAPIN IO> COMMAND
3174083 be/6 1000112 2.81 M/s 0.00 B/s 0.00 % 99.99 % perl
/usr/share/backuppc/bin/BackupPC_refCountUpdate -m -s -c -P 10 -r 169-171
3174071 be/6 1000112 2.08 M/s 0.00 B/s 0.00 % 97.33 % perl
/usr/share/backuppc/bin/BackupPC_refCountUpdate -m -s -c -P 10 -r 160-162
3174105 be/6 1000112 2.12 M/s 0.00 B/s 0.00 % 96.15 % perl
/usr/share/backuppc/bin/BackupPC_refCountUpdate -m -s -c -P 10 -r 163-165
3174069 be/6 1000112 1353.41 K/s 0.00 B/s 0.00 % 96.00 % perl
/usr/share/backuppc/bin/BackupPC_refCountUpdate -m -s -c -P 10 -r 166-168
3174080 be/6 1000112 9.01 M/s 0.00 B/s 0.00 % 93.42 % perl
/usr/share/backuppc/bin/BackupPC_refCountUpdate -m -s -c -P 10 -r 172-175
2940817 be/4 1000000 1759.34 K/s 285.89 K/s 0.00 % 43.55 % systemd-journald
I have similar setup in ext4 and btrfs who run really fine but on ZFS it
crawl like crazy. Is the anything i missed ?
--
cordialement,
Ghislain ADNET.
AQUEOS.
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