Asif Iqbal wrote:
> On Nov 19, 2007 11:47 PM, Richard Elling <[EMAIL PROTECTED]> wrote:
>
>> Asif Iqbal wrote:
>>
>>> I have the following layout
>>>
>>> A 490 with 8 1.8Ghz and 16G mem. 6 6140s with 2 FC controllers using
>>> A1 anfd B1 controller port 4Gbps speed.
>>> Each controller has
On Nov 20, 2007 10:40 AM, Andrew Wilson <[EMAIL PROTECTED]> wrote:
>
> What kind of workload are you running. If you are you doing these
> measurements with some sort of "write as fast as possible" microbenchmark,
Oracle database with blocksize 16K .. populating the database as fast I can
> once
And, just to add one more point, since pretty much everything the host
writes to the controller eventually has to make it out to the disk
drives, the long term average write rate cannot exceed the rate that
the backend disk subsystem can absorb the writes, regardless of the
workload. (An except
What kind of workload are you running. If you are you doing these
measurements with some sort of "write as fast as possible"
microbenchmark, once the 4 GB of nvram is full, you will be limited by
backend performance (FC disks and their interconnect) rather than the
host / controller bus.
Since
On 11/20/07, Asif Iqbal <[EMAIL PROTECTED]> wrote:
> On Nov 20, 2007 7:01 AM, Chad Mynhier <[EMAIL PROTECTED]> wrote:
> > On 11/20/07, Asif Iqbal <[EMAIL PROTECTED]> wrote:
> > > On Nov 19, 2007 1:43 AM, Louwtjie Burger <[EMAIL PROTECTED]> wrote:
> > > > On Nov 17, 2007 9:40 PM, Asif Iqbal <[EMAIL
On Nov 20, 2007 7:01 AM, Chad Mynhier <[EMAIL PROTECTED]> wrote:
> On 11/20/07, Asif Iqbal <[EMAIL PROTECTED]> wrote:
> > On Nov 19, 2007 1:43 AM, Louwtjie Burger <[EMAIL PROTECTED]> wrote:
> > > On Nov 17, 2007 9:40 PM, Asif Iqbal <[EMAIL PROTECTED]> wrote:
> > > > (Including storage-discuss)
> >
On Nov 20, 2007 1:48 AM, Louwtjie Burger <[EMAIL PROTECTED]> wrote:
> >
> > That is still 256MB/s . I am getting about 194MB/s
>
> No, I don't think you can take 2Gbit / 8bits per byte and say 256MB is
> what you should get...
> Someone with far more FC knowledge can comment here. There must be
>
On 11/20/07, Asif Iqbal <[EMAIL PROTECTED]> wrote:
> On Nov 19, 2007 1:43 AM, Louwtjie Burger <[EMAIL PROTECTED]> wrote:
> > On Nov 17, 2007 9:40 PM, Asif Iqbal <[EMAIL PROTECTED]> wrote:
> > > (Including storage-discuss)
> > >
> > > I have 6 6140s with 96 disks. Out of which 64 of them are Seagate
