On Solaris 10 u3 (11/06) I can execute the following:
bash-3.00# mdb -k
Loading modules: [ unix krtld genunix specfs dtrace ufs sd pcipsy ip sctp usba
nca md zfs random ipc nfs crypto cpc fctl fcip logindmux ptm sppp ]
> arc::print
{
anon = ARC_anon
mru = ARC_mru
mru_ghost = ARC_mru_ghost
mfu = ARC_mfu
mfu_ghost = ARC_mfu_ghost
size = 0x6b800
p = 0x3f83f80
c = 0x7f07f00
c_min = 0x7f07f00
c_max = 0xbe8be800
hits = 0x30291
misses = 0x4f
deleted = 0xe
skipped = 0
hash_elements = 0x3a
hash_elements_max = 0x3a
hash_collisions = 0x3
hash_chains = 0x1
hash_chain_max = 0x1
no_grow = 0
}
However, when I execute the same command on Solaris 10 u4 (8/07) I receive the
following error:
bash-3.00# mdb -k
Loading modules: [ unix krtld genunix specfs dtrace ufs ssd fcp fctl qlc pcisch
md ip hook neti sctp arp usba nca lofs logindmux ptm cpc fcip sppp random sd
crypto zfs ipc nfs ]
> arc::print
mdb: failed to dereference symbol: unknown symbol name
In addition, u3 doesn't recognize "::arc" where u4 does.
u3 displays memory locations with "arc::print -a" where "::arc -a" doesn't work
for u4.
I posted this into the zfs discussion forum, because this limited u4
functionality prevents you from dynamically changing the ARC in ZFS by trying
the ZFS Tuning instructions.
Spencer
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