FreeBSD 13.0 release notes say that it now sports the OpenZFS implementation. Compared to 11.4 on the same hardware (VPS), performance (when dedup is used, haven't tested without it) is absolutely terrible. Writes take much longer to complete, deletes simply halt other writes for a very long time up to 20-40 seconds, which makes interactvity (logins/logouts which tend to cause some subtle disk i/o for the usual accounting) a nightmare. Other than setting arc.max and a couple more no other tweaks have been made here or in its previous incarnation, 11.4.
/boot/loader.conf:
/etc/sysctl.conf:
The last one defaults to 25% of arc_max iirc and it was increased in the hopes of speeding up dedup back in 10.3/11.4.
Running without dedup isn't an option, obviously ))
Can someone please point me in the right direction in the Expert Tweaking Land, I'm new here
/boot/loader.conf:
Code:
virtio_balloon_load="YES"
virtio_blk_load="YES"
virtio_load="YES"
virtio_pci_load="YES"
if_vtnet_load="YES"
hw.usb.no_shutdown_wait=1
loader_logo=none
zfs_load="YES"
vfs.root.mountfrom="zfs:zroot"
vfs.zfs.arc.max="8G"
vfs.zfs.vdev.cache_size="16M"
console="vidconsole,comconsole"
autoboot_delay="5"
/etc/sysctl.conf:
Code:
kern.maxvnodes=800000
vfs.zfs.arc.meta_limit=3221225472
The last one defaults to 25% of arc_max iirc and it was increased in the hopes of speeding up dedup back in 10.3/11.4.
Running without dedup isn't an option, obviously ))
Code:
$ zpool list
NAME SIZE ALLOC FREE CKPOINT EXPANDSZ FRAG CAP DEDUP HEALTH ALTROOT
zroot 640G 159G 481G - - 83% 24% 12.00x ONLINE -
Can someone please point me in the right direction in the Expert Tweaking Land, I'm new here