James Dickens wrote:
>>> kugutsum
>>>
>>> I tried with just 4Gb in the system, and the same
>> issue. I'll try
>>> 2Gb tomorrow and see if any better.(ps, how did
>> you determine
>>> that was the problem in your case)
>>
>> sorry, I wasn't monitoring this list for a while. My
>> machine
>
> > kugutsum
> >
> > I tried with just 4Gb in the system, and the same
> issue. I'll try
> > 2Gb tomorrow and see if any better.(ps, how did
> you determine
> > that was the problem in your case)
>
>
> sorry, I wasn't monitoring this list for a while. My
> machine has 8GB
> of ram
I set /etc/system's zfs:zfs_arc_max = 0x1000 and it seems better now.
I had previously tried setting it to 2Gb rather than 256Mb as above without
success... I should have tried much lower!
It "seems" that when I perform I/O though a WindowsXP hvm, I get a "reasonable"
I/O rate, but I'm not
> kugutsum
>
> I tried with just 4Gb in the system, and the same issue. I'll try
> 2Gb tomorrow and see if any better.(ps, how did you determine
> that was the problem in your case)
sorry, I wasn't monitoring this list for a while. My machine has 8GB
of ram and I remembered that some
IIn this PC, I'm using the PCI card
http://www.intel.com/network/connectivity/products/pro1000gt_desktop_adapter.htm
, but, more recentlyI'm using the PCI Express card
http://www.intel.com/network/connectivity/products/pro1000pt_desktop_adapter.htm
Note that the latter didn't have PXE and the b
Martin,
I've got the same Asus board as you do and 4GB of ram, but I haven't gotten to
the point of using ZFS or Xen/xVM yet largely because I've been sidetracked
getting the Marvell ethernet to work under b75a; I keep having errors getting
the myk driver to load.
A few weeks ago I had the myk d
Well, I've tried the latest OpenSolaris snv_76 release, and it displays the
same symptoms.
(so b66-0624-xen, 75a and 76 all have the same problem)
But, the good news is that is behaves well if there is only 2Gb of memory in
the system.
So, in summary
The command time dd if=/dev/zero of=myfile.
kugutsum
I tried with just 4Gb in the system, and the same issue. I'll try 2Gb
tomorrow and see if any better.(ps, how did you determine that was the
problem in your case)
cheers
Martin
This message posted from opensolaris.org
___
zfs-disc
I had a similar problem on a quad core amd box with 8 gig of ram...
The performance was nice for a few minutes but then the system will
crawl to a halt.
The problem was that the areca SATA drivers can't do DMA when the dom0
memory wasn't at 3 gig or lower.
On 04/11/2007, at 3:49 PM, Martin
Mitchell
The problem seems to occur with various IO patterns. I first noticed it after
using ZFS based storage for a disk image for a xVM/Xen virtual domain, and
then, while tracking ti down, observed that either "cp" of a large .iso disk
image would reproduce the problem, and more later, a s
Martin,
This is a shot in the dark, but, this seems to be a IO scheduling
issue.
Since, i am late on this thread, what is the characteristic of
the IO: read mostly, appending writes, read, modify write,
sequentiality, random, single large file, multiple fil
> The behaviour of ZFS might vary between invocations, but I don't think that
> is related to xVM. Can you get the results to vary when just booting under
> "bare metal"?
It's pretty consistently displays the behaviors of good IO (approx 60Mb/s -
80Mb/s) for about 10-20 seconds, then always drops
Hmm, I just repeated this test on my system:
bash-3.2# uname -a
SunOS soe-x4200m2-6 5.11 onnv-gate:2007-11-02 i86pc i386 i86xpv
bash-3.2# prtconf | more
System Configuration: Sun Microsystems i86pc
Memory size: 7945 Megabytes
bash-3.2# prtdiag | more
System Configuration: Sun Microsystems Sun
I've removed half the memory, leaving 4Gb, and rebooted into "Solaris xVM", and
re-tried under Dom0. Sadly, I still get a similar problem. With "dd
if=/dev/zero of=myfile bs=16k count=15" I get command returning in 15
seconds, and "zpool iostat 1 1000" shows 22 records with an IO rate of a
> I've got Solaris Express Community Edition build 75
> (75a) installed on an Asus P5K-E/WiFI-AP (ip35/ICH9R
> based) board. CPU=Q6700, RAM=8Gb, disk=Samsung
> HD501LJ and (older) Maxtor 6H500F0.
>
> When the O/S is running on bare metal, ie no xVM/Xen
> hypervisor, then everything is fine.
>
>
On 11/1/07, Nathan Kroenert <[EMAIL PROTECTED]> wrote:
> Tell me - If you watch with an iostat -x 1, do you see bursts of I/O
> then periods of nothing, or just a slow stream of data?
>
> I was seeing intermittent stoppages in I/O, with bursts of data on
> occasion...
I have seen this wit
I observed something like this a while ago, but assumed it was something
I did. (It usually is... ;)
Tell me - If you watch with an iostat -x 1, do you see bursts of I/O
then periods of nothing, or just a slow stream of data?
I was seeing intermittent stoppages in I/O, with bursts of data on
o
Hello
I've got Solaris Express Community Edition build 75 (75a) installed on an Asus
P5K-E/WiFI-AP (ip35/ICH9R based) board. CPU=Q6700, RAM=8Gb, disk=Samsung
HD501LJ and (older) Maxtor 6H500F0.
When the O/S is running on bare metal, ie no xVM/Xen hypervisor, then
everything is fine.
When it'
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