=== ZFS Tuning ===

<code bash>
zfs set logbias=throughput zfs_pool_name/zfs_fs
zfs set compression=lzjb zfs_pool_name/zfs_fs
</code>

==Testing==
<code bash>
echo "metaslab_unload_delay/D" | mdb -k
echo "metaslab_unload_delay/W0t300" | mdb -kw
</code>

==Keep loaded metaslabs loaded for longer without unloading==
<code bash>
/etc/system:
set zfs:metaslab_unload_delay=300
</code>

==Identify disks with slow service times==
<code bash>
iostat -xnMCz 1 | awk '($1 > 10 || $2 > 10) && $8 > 10 {print}'

kstat -n dnlcstats

sysdef

mdb -k 
::kmastat
::mdbstat
</code>