Stephan,
There are a bunch of tools you can use, mostly provided with Solaris 11
Express, plus arcstat, arc_summary that are available as downloads. The
latter tools will tell you the size and state of ARC, which may be
specific to your issues since you cite memory. For the list, could you
describe the ZFS pool configuration (zpool status), and summarize output
from vmstat, iostat, and zpool iostat? Also, it might be helpful to
issue 'prstat -s rss' to see if any process is growing its resident
memory size. An excellet source of information is the "ZFS evil tuning
guide" (just Google those words), which has a wealth of information.
I hope that helps (for a start at least)
Jeff
On 01/12/11 08:21 AM, Stephan Budach wrote:
Hi all,
I have exchanged my Dell R610 in favor of a Sun Fire 4170 M2 which has
32 GB RAM installed. I am running Sol11Expr on this host and I use it
to primarily serve Netatalk AFP shares. From day one, I have noticed
that the amount of free RAM decereased and along with that decrease
the overall performance of ZFS decreased as well.
Now, since I am still quite a Solaris newbie, I seem to cannot track
where the heck all the memory has gone and why ZFS performs so poorly
after an uptime of only 5 days.
I can reboot Solaris, which I did for testing, and that would bring
back the performance to reasonable levels, but otherwiese I am quite
at my witts end.
To give some numbers: the ZFS performance decreases down to 1/10th of
the initial throughput, either read or write.
Anybody having some tips up their sleeves, where I should start
looking for the missing memory?
Cheers,
budy
--
*Jeff Savit* | Principal Sales Consultant
Phone: 602.824.6275 | Email: jeff.sa...@oracle.com | Blog:
http://blogs.sun.com/jsavit
Oracle North America Commercial Hardware
Operating Environments & Infrastructure S/W Pillar
2355 E Camelback Rd | Phoenix, AZ 85016
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