Hi,
Just for closing this topic. Two issues have been found which caused the slow
write performance on our Sun Storage 7410 with RAIDZ2:
(1) A Opensolaris bug when NFS mount option is set to wsize=32768. Reducing to
wsize=16384 resulted in a performance gain of about factor 2.
http://bugs.ope
Hi Bob,
> Striping across two large raidz2s is not ideal for
> multi-user use.
> You are getting the equivalent of two disks worth of
> IOPS, which does
> not go very far. More smaller raidz vdevs or mirror
> vdevs would be
> better. Also, make sure that you have plenty of RAM
> installed.
Th
On Sep 29, 2009, at 7:59 AM, Bernd Nies wrote:
Hi,
The system already has a SSD (ATASTECZeusIOPS018GBytesSTMD905C)
as ZFS log device.
I apologize, I should know better than to answer before the first cup of
coffee :-P
NFS writes from only one host are not the problem. Even with may
s
Bob Friesenhahn wrote:
Striping across two large raidz2s is not ideal for multi-user use. You
are getting the equivalent of two disks worth of IOPS, which does not
go very far. More smaller raidz vdevs or mirror vdevs would be
better. Also, make sure that you have plenty of RAM installed.
F
On Tue, 29 Sep 2009, Bernd Nies wrote:
NFS writes from only one host are not the problem. Even with may
small files it is almost as fast as a Netapp. Problem arises when
doing the same parallel from n hosts. E.g. the same write from 10
hosts lasts 10 times longer. On the Netapp the same from
Hi,
The system already has a SSD (ATASTECZeusIOPS018GBytesSTMD905C) as ZFS log
device.
NFS writes from only one host are not the problem. Even with may small files it
is almost as fast as a Netapp. Problem arises when doing the same parallel from
n hosts. E.g. the same write from 10 hosts
On Tue, Sep 29, 2009 at 10:35 AM, Richard Elling
wrote:
>
> On Sep 29, 2009, at 2:03 AM, Bernd Nies wrote:
>
>> Hi,
>>
>> We have a Sun Storage 7410 with the latest release (which is based upon
>> opensolaris). The system uses a hybrid storage pool (23 1TB SATA disks in
>> RAIDZ2 and 1 18GB SSD as
On Sep 29, 2009, at 2:03 AM, Bernd Nies wrote:
Hi,
We have a Sun Storage 7410 with the latest release (which is based
upon opensolaris). The system uses a hybrid storage pool (23 1TB
SATA disks in RAIDZ2 and 1 18GB SSD as log device). The ZFS volumes
are exported with NFSv3 over TCP. NFS
Hi,
We have a Sun Storage 7410 with the latest release (which is based upon
opensolaris). The system uses a hybrid storage pool (23 1TB SATA disks in
RAIDZ2 and 1 18GB SSD as log device). The ZFS volumes are exported with NFSv3
over TCP. NFS mount options are:
rw,bg,vers=3,proto=tcp,hard,intr,
