ZFS L2ARC hit ratio

[Attila Nagy]

On 06/21/11 21:59, Wiktor Niesiobedzki wrote:
> I've recently migrated my 8.2 box to recent stable:
> FreeBSD kadlubek.vink.pl 8.2-STABLE FreeBSD 8.2-STABLE #22: Tue Jun  7
> 03:43:29 CEST 2011     root at kadlubek:/usr/obj/usr/src/sys/KADLUB  i386
>
> And upgraded my ZFS/ZPOOL to newest versions. Though through my
> monitoring I've noticed some declination in L2ARC hit ratio (server is
> not busy, so it doesn't look that suspicious). I've made some tests
> today and I guess, that there might be some problem:
Likely because vfs.zfs.l2arc_noprefetch is now 1.